JPH0329254B2 - - Google Patents
Info
- Publication number
- JPH0329254B2 JPH0329254B2 JP7130286A JP7130286A JPH0329254B2 JP H0329254 B2 JPH0329254 B2 JP H0329254B2 JP 7130286 A JP7130286 A JP 7130286A JP 7130286 A JP7130286 A JP 7130286A JP H0329254 B2 JPH0329254 B2 JP H0329254B2
- Authority
- JP
- Japan
- Prior art keywords
- phenolic resin
- foam
- weight
- naphthalene
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000006260 foam Substances 0.000 claims description 27
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 15
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 15
- 239000005011 phenolic resin Substances 0.000 claims description 15
- 229920001568 phenolic resin Polymers 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000011134 resol-type phenolic resin Substances 0.000 claims description 10
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 claims description 8
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 125000001174 sulfone group Chemical group 0.000 claims description 5
- 238000005187 foaming Methods 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- 239000004088 foaming agent Substances 0.000 claims description 3
- 150000002790 naphthalenes Chemical class 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- 239000004604 Blowing Agent Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000004566 building material Substances 0.000 description 3
- 150000002989 phenols Chemical class 0.000 description 3
- UJPMYEOUBPIPHQ-UHFFFAOYSA-N 1,1,1-trifluoroethane Chemical compound CC(F)(F)F UJPMYEOUBPIPHQ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 2
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 2
- IWDCLRJOBJJRNH-UHFFFAOYSA-N p-cresol Chemical compound CC1=CC=C(O)C=C1 IWDCLRJOBJJRNH-UHFFFAOYSA-N 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical compound OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 1
- ZXUJWPHOPHHZLR-UHFFFAOYSA-N 1,1,1-trichloro-2-fluoroethane Chemical compound FCC(Cl)(Cl)Cl ZXUJWPHOPHHZLR-UHFFFAOYSA-N 0.000 description 1
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- USPLDBATMHXKKD-UHFFFAOYSA-N dichloromethane;pentane Chemical compound ClCCl.CCCCC USPLDBATMHXKKD-UHFFFAOYSA-N 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- KVBGVZZKJNLNJU-UHFFFAOYSA-N naphthalene-2-sulfonic acid Chemical compound C1=CC=CC2=CC(S(=O)(=O)O)=CC=C21 KVBGVZZKJNLNJU-UHFFFAOYSA-N 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- 235000010483 polyoxyethylene sorbitan monopalmitate Nutrition 0.000 description 1
- 239000000249 polyoxyethylene sorbitan monopalmitate Substances 0.000 description 1
- -1 polyoxymethylene trioxane Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- 125000002256 xylenyl group Chemical class C1(C(C=CC=C1)C)(C)* 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
〔産業上の利用分野〕
本発明になるレゾール型フエノール樹脂発泡体
は、耐熱性、耐脆性、機械的強度、耐燃性及び耐
水性に優れており、建材用の壁材、天井材或いは
家具用などに有用である。
〔従来の技術〕
従来のフエノール樹脂発泡体は難燃性、低発煙性
及び耐熱性に優れている反面、ウレタンフオー
ム、ポリスチレンフオーム等のプラスチツクフオ
ームに比較して脆く、更には高吸水性であるため
に建材用、家具用の使用が伸びなかつた。
これらの問題を解決すべくフエノール樹脂の改
質を始め各種類の添加剤及び撥水剤などの添加が
試みられたが結果として満足のいくフエノール樹
脂発泡体が得られるに到つていなかつた。
〔本発明が解決しようとする問題点〕
本発明方法は、特定の酸硬化剤を用いることに
より、フエノール樹脂発泡体の特徴である耐熱
性、難燃性及び低発煙性を保持しつつ、その欠点
である高吸水性、脆性及び機械的強度を改良した
実用に供し得るフエノール樹脂発泡体を提供しよ
うとするものである。
〔問題点を解決するための手段〕
即ち、本発明のフエノール樹脂発泡体の製造法
は、酸硬化剤としてナフタレンスルホン酸ホルム
アルデ縮合物をフエノール樹脂、発泡剤及び整泡
剤と混合し発泡硬化させて、低吸水性及び高独立
気泡率を有するフエノール樹脂発泡体を得ること
を特徴とするものである。
〔作用〕
本発明において用いられる酸硬化剤はナフタレ
ンスルホン酸ホルムアルデヒド縮合物であり、こ
れの一般的な製造法はナフタレンを溶融し、これ
に硫酸を付加させた後ホルマリンを滴下してナフ
タレンスルホン酸ホルムアルデヒド縮合物にした
後に水で適当に希釈して得られる。
得られるナフタレンスルホン酸ホルムアルデヒ
ド縮合物は次の様な一般式で表わされる。
本発明におけるスルホン基の付加率はナフタレ
ン核１に対して１のスルホン基が付加した場合を
100％として表示されている。
本発明において、スルホン基の付加率は20〜
100％であり、好適には50〜80％のものが使用さ
れる。スルホン基の付加率が20％より小さい場合
は発泡硬化速度が著しく遅そく、また100％より
大きい場合は逆に発泡硬化速度が著しく速いため
使用困難になる。
ナフタレンスルホン酸ホルムアルデヒド縮合物
としては平均分子量として８量体以下が好まし
く、それ以上平均分子量が大きくなると粘度が
10000cps／25℃以上になり発泡作業の混合の際に
均一化されず、そのために発泡体のセルが不均一
となりセルムラを発生する場合がある。
本発明において用いられるレゾール型フエノー
ル樹脂は通常フエノール類１モルに対してアルデ
ヒド類1.5〜３モルをアルカリ金属又はアルカリ
土類金属触媒の存在下、60〜100℃好ましくは70
〜90℃で１〜７時間好ましくは２〜５時間反応さ
せた後、無機又は有機の酸によりPHを6.0〜8.0に
中和される。その後減圧脱水により系内の水分を
適当な量迄除去して得られる。
本発明に用いられるフエノール類としてはフエ
ノール、クレゾール、キシレノール等の一価の一
般的にレゾール型フエノール樹脂製造に用いられ
るフエノール類が挙げられるが、その中でフエノ
ール、ｍ−クレゾールが特に好ましい。これらは
単独もしくは併用して使用してもよく、更にはｏ
−クレゾール、ｐ−クレゾールおよびビスフエノ
ール等を併用してもよい。フエノール類との反応
に使用されるアルデヒド類としては、ホルムアル
デヒド、パラホルムアルデヒド、ポリオキシメチ
レントリオキサン等が好適である。
本発明に用いられる発泡剤としては、ペンタン
塩化メチレン、トリクロロフルオロエタン、テト
ラフルオロメタン112−トリクロロ122トリフルオ
ロエタンなどの揮発性有機液体が挙げられる。勿
論これらは混合物としても用いられる。これらの
発泡剤はレゾール型フエノール樹脂100重量部に
対して５〜30重量部の範囲で使用することが好ま
しい。
本発明で用いられる整泡剤としてはシリコーン
系エチレンオキサイド・プロピレンオキサイド共
重合体ソルビタン、アルキルフエノール、ヒマシ
油などのポリオキシアルキレン付加物等の界面活
性剤が挙げられる。これらは混合して使用するこ
とも可能であり、その使用量はレゾール型フエノ
ール樹脂100重量部に対して0.5〜10重量部の範囲
で使用することが出来る。
本発明のフエノール樹脂発泡体の製造法はレゾ
ール型フエノール樹脂、発泡剤、整泡剤及び前記
したナフタレンスルホン酸ホルムアルデヒド縮合
物の酸硬化剤を混合した後、発泡硬化して製造さ
れる。混合は高速撹拌機（ホモデイスパーなど）
を用いて30〜60秒間撹拌を行えば充分である。発
泡硬化は常温〜100℃程度の温度で実施される。
〔実施例〕
以下、実施例をもつて本発明を具体的に説明す
る。
実施例 １
四口フラスコにフエノール2.0Kg、37％ホルム
アルデヒド2.93Kg（モル比1.7モル）及び触媒と
して20％カ性ソーダー60grを仕込み80℃で３時間
反応した後15％硫酸を用いてPHを7.0に中和した
後減圧脱水により樹脂中の水分を５％以下にし
た。
得られたレゾール型フエノール樹脂は樹脂固型
分80％、粘度2500cps／25℃、重量平均分子量430
であつた。
硬化剤として、四口フラスコにナフタレン500
ｇを入れ熔融し、これに98％硫酸500ｇを滴下し
160〜170℃にて５時間反応してβ−ナフタレンス
ルホン酸とした後に250ｇの水を加えて系内を希
釈し80℃に於いて37％ホルムアルデヒド220ｇを
滴下し系全体を80゜にして20時間反応を行い最後
95〜100℃に加熱して縮合を完結してナフタレン
スルホン酸ホルムアルデヒド縮合物を得た。
得られたナフタレンスルホン酸ホルムアルデヒ
ド縮合物は、80％のスルホン基が付加されており
粘度3000cps／25℃、縮合度としては平均４量体
であつた。
前記したレゾール型フエノール樹脂100重量部
に対してTween＃40（ポリオキシエチレンソルビ
タンモノパルミテート）２重量部、発泡剤として
112−トリクロロ122トリフロロエタン20重量部、
更に前記したナフタレンスルホン酸ホルムアルデ
ヒド縮合物の20重量部を高速撹拌機で30秒間混合
した後幅50cm、長さ25cm、高さ４cmの鉄枠中に流
し込みこれを80℃オーブン中で10分間放置し、発
泡硬化を完了してフエノール樹脂発泡体を得た。
得られたフエノール樹脂発泡体の物性は密度45
Kg／m3、独立気泡率98％、脆性20％、吸水量1.5
ｇ／100cm2、熱伝導率0.020kcal／mh℃であり、
尚吸水性は48Hrs，72Hrs浸漬時間で共に1.5ｇ／
100cm2であつた。
実施例２〜５，比較例１〜４
第１表記載の処方に従つた以外、実施例１の方
法で発泡体を製造し、物性を測定した。
それらの結果をまとめて第１表及び第２表に示
す。
[Industrial Application Field] The resol type phenolic resin foam of the present invention has excellent heat resistance, brittleness resistance, mechanical strength, flame resistance, and water resistance, and is suitable for use as wall materials for building materials, ceiling materials, or furniture. It is useful for such things. [Prior art] Although conventional phenolic resin foams have excellent flame retardancy, low smoke emission, and heat resistance, they are more brittle than plastic foams such as urethane foam and polystyrene foam, and are also highly water absorbent. Therefore, its use for building materials and furniture did not grow. In order to solve these problems, attempts have been made to modify the phenolic resin and add various types of additives and water repellents, but as a result, satisfactory phenolic resin foams have not been obtained. [Problems to be solved by the present invention] By using a specific acid curing agent, the method of the present invention maintains the heat resistance, flame retardance, and low smoke emission properties that are characteristic of phenolic resin foam. The purpose of this invention is to provide a practically usable phenolic resin foam that has improved high water absorption, brittleness, and mechanical strength, which are disadvantageous. [Means for Solving the Problems] That is, the method for producing a phenolic resin foam of the present invention involves mixing a naphthalene sulfonic acid formalde condensate as an acid curing agent with a phenolic resin, a foaming agent, and a foam stabilizer, and foaming and curing the mixture. The present invention is characterized in that a phenolic resin foam having low water absorption and high closed cell ratio is obtained. [Operation] The acid curing agent used in the present invention is a naphthalene sulfonic acid formaldehyde condensate, and the general manufacturing method is to melt naphthalene, add sulfuric acid to it, and then drop formalin to form a naphthalene sulfonic acid. It is obtained by making a formaldehyde condensate and diluting it appropriately with water. The resulting naphthalenesulfonic acid formaldehyde condensate is represented by the following general formula. The addition rate of sulfone groups in the present invention is based on the case where 1 sulfone group is added to 1 naphthalene nucleus.
Displayed as 100%. In the present invention, the addition rate of sulfone groups is 20 to
100%, preferably 50-80%. If the addition rate of sulfonic groups is less than 20%, the foam curing rate is extremely slow, and if it is greater than 100%, the foam curing rate is extremely fast, making it difficult to use. The average molecular weight of the naphthalene sulfonic acid formaldehyde condensate is preferably octamer or less, and if the average molecular weight becomes larger than that, the viscosity will decrease.
When the temperature exceeds 10,000 cps/25°C, the foam cannot be homogenized during mixing during the foaming process, and as a result, the cells of the foam may become non-uniform, resulting in cell unevenness. The resol type phenolic resin used in the present invention is usually prepared by adding 1.5 to 3 moles of aldehyde per mole of phenol at 60 to 100°C, preferably 70°C, in the presence of an alkali metal or alkaline earth metal catalyst.
After reacting at ~90°C for 1 to 7 hours, preferably 2 to 5 hours, the pH is neutralized to 6.0 to 8.0 with an inorganic or organic acid. Thereafter, water in the system is removed to an appropriate amount by dehydration under reduced pressure. The phenols used in the present invention include monovalent phenols commonly used in the production of resol type phenolic resins such as phenol, cresol, and xylenol, among which phenol and m-cresol are particularly preferred. These may be used alone or in combination, and
-Cresol, p-cresol, bisphenol, etc. may be used in combination. Suitable aldehydes used in the reaction with phenols include formaldehyde, paraformaldehyde, polyoxymethylene trioxane, and the like. Blowing agents used in the present invention include volatile organic liquids such as pentane-methylene chloride, trichlorofluoroethane, and tetrafluoromethane 112-trichloro122 trifluoroethane. Of course, these can also be used as a mixture. These blowing agents are preferably used in an amount of 5 to 30 parts by weight based on 100 parts by weight of the resol type phenolic resin. Examples of the foam stabilizer used in the present invention include surfactants such as silicone-based ethylene oxide/propylene oxide copolymer sorbitan, alkylphenols, and polyoxyalkylene adducts such as castor oil. These can also be used as a mixture, and the amount used can be in the range of 0.5 to 10 parts by weight per 100 parts by weight of the resol type phenolic resin. The phenolic resin foam of the present invention is produced by mixing a resol type phenolic resin, a foaming agent, a foam stabilizer, and an acid curing agent of the naphthalene sulfonic acid formaldehyde condensate, and then foaming and curing the mixture. Mixing is done using a high-speed stirrer (Homo Disper, etc.)
Stirring for 30 to 60 seconds is sufficient. Foam curing is carried out at a temperature of about room temperature to 100°C. [Example] The present invention will be specifically described below with reference to Examples. Example 1 A four-necked flask was charged with 2.0 kg of phenol, 2.93 kg of 37% formaldehyde (mole ratio 1.7 mol), and 60 gr of 20% caustic soda as a catalyst, and after reacting at 80°C for 3 hours, the pH was adjusted to 7.0 using 15% sulfuric acid. After neutralization, the water content in the resin was reduced to 5% or less by dehydration under reduced pressure. The obtained resol type phenolic resin has a resin solid content of 80%, a viscosity of 2500 cps/25°C, and a weight average molecular weight of 430.
It was hot. Naphthalene 500 in a four-necked flask as a hardening agent.
g, melt it, and drop 500 g of 98% sulfuric acid into it.
After reacting at 160 to 170°C for 5 hours to obtain β-naphthalenesulfonic acid, 250g of water was added to dilute the system, and at 80°C, 220g of 37% formaldehyde was added dropwise to bring the entire system to 80°. Do the time reaction at the end
The condensation was completed by heating to 95-100°C to obtain a naphthalenesulfonic acid formaldehyde condensate. The resulting naphthalene sulfonic acid formaldehyde condensate had 80% sulfone groups added, a viscosity of 3000 cps/25°C, and an average degree of condensation of tetramer. 2 parts by weight of Tween #40 (polyoxyethylene sorbitan monopalmitate) as a blowing agent for 100 parts by weight of the resol type phenolic resin described above.
20 parts by weight of 112-trichloro122 trifluoroethane,
Further, 20 parts by weight of the naphthalene sulfonic acid formaldehyde condensate described above was mixed for 30 seconds using a high-speed stirrer, then poured into an iron frame with a width of 50 cm, a length of 25 cm, and a height of 4 cm, and the mixture was left in an oven at 80°C for 10 minutes. , foam curing was completed to obtain a phenolic resin foam. The physical properties of the obtained phenolic resin foam have a density of 45
Kg/ m3 , closed cell ratio 98%, brittleness 20%, water absorption 1.5
g/100cm 2 , thermal conductivity 0.020kcal/mh℃,
The water absorption is 1.5g/ for both 48Hrs and 72Hrs soaking time.
It was 100cm2 . Examples 2 to 5, Comparative Examples 1 to 4 Foams were produced in the same manner as in Example 1, except that the formulations listed in Table 1 were followed, and their physical properties were measured. The results are summarized in Tables 1 and 2.
【表】【table】
【表】【table】
【表】【table】
本発明のフエノール樹脂発泡体の製造法によつ
て得られる発泡体は、耐水性、耐湿性等の水に対
する特性及び高独立気泡率において従来のフエノ
ール樹脂発泡体では望めない優れた特性を有しお
り、今迄耐水性等が問題で使用不可能だつた建材
用、家具用に今後は幅広く用いることが可能とな
つた。
The foam obtained by the method for producing a phenolic resin foam of the present invention has excellent properties against water such as water resistance and moisture resistance, and a high closed cell ratio that cannot be expected from conventional phenolic resin foams. In the future, it will now be possible to use it widely for building materials and furniture, which were previously unusable due to problems such as water resistance.
Claims (1)
及び酸硬化剤を均一混合した後発泡硬化させてフ
エノール樹脂発泡体を製造するに当り、酸硬化剤
としてナフタレンに20〜100％のスルホン基を付
加させたものにホルマリンを反応させて得たナフ
タレン核８量体以下のナフタレンスルホン酸ホル
ムアルデヒド縮合物を、レゾール型フエノール樹
脂100重量部に対して10〜40重量部を使用するこ
とを特徴とする、低吸水性及び高独立気泡率フエ
ノール樹脂発泡体の製造法。1. When producing a phenolic resin foam by homogeneously mixing a resol type phenolic resin, a foaming agent, a foam stabilizer, and an acid curing agent and then foaming and curing it, 20 to 100% of sulfone groups are added to naphthalene as an acid curing agent. characterized in that 10 to 40 parts by weight of a naphthalene sulfonic acid formaldehyde condensate having a naphthalene nucleus octamer or less obtained by reacting formalin with formalin is used for 100 parts by weight of resol type phenolic resin. A method for producing a phenolic resin foam with low water absorption and high closed cell ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7130286A JPS62227935A (en) | 1986-03-31 | 1986-03-31 | Production of phenolic resin foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7130286A JPS62227935A (en) | 1986-03-31 | 1986-03-31 | Production of phenolic resin foam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62227935A JPS62227935A (en) | 1987-10-06 |
| JPH0329254B2 true JPH0329254B2 (en) | 1991-04-23 |
Family
ID=13456716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7130286A Granted JPS62227935A (en) | 1986-03-31 | 1986-03-31 | Production of phenolic resin foam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62227935A (en) |
-
1986
- 1986-03-31 JP JP7130286A patent/JPS62227935A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62227935A (en) | 1987-10-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |