JPS5887162A - Pigment dispersible resin composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a resin composition with excellent dispersibility.

Conventionally, paints in which pigments are dispersed using vinyl resin or acrylic resin as a coloring agent have been known. Phenomena such as separation and floating of pigments on the film surface (when a rubbing test is performed on a paint film, there will be a difference in color between the rubbed test area and other parts due to the specific gravity of the pigment itself and the factors of its ponding). .

This phenomenon is considered to be due to homo-agglomeration and hetero-aggregation of pigments. To prevent this heteroaggregation, add 7J of surfactant, alcohol, etc. when dispersing the pigment.
It is improved to the extent that the O agent is completely added. However, if there is a large amount of additive in the paint, unfavorable results will occur in terms of coating film properties such as the scorching phenomenon and low F of water resistance.

On the other hand, as a method to prevent homoaggregation, a solution was previously found by changing the combination of color vehicle and pigment used in the past. This method was not universal as it relied on the experience and intuition of a paint manufacturer.

In order to prevent the agglomeration of pounded pigments, progress is being made in the development of IFi, a synthetic resin that is dispersible with nitrified cotton and oils and fats, but sufficient material has not yet been obtained.

The present invention has been made taking advantage of the above-mentioned current situation,
The purpose of this invention is to provide a resin composition 9 which aims to improve the homoaggregation of pigments and improve the dispersibility of pigments.

That is, the present invention provides (a) acrylic acid or methacrylic acid alkyl ester......4
6.0~99.9 heavy-fourth, (b) tri ali
Lua i no... 0, 1~4.0i
dH%, and vinyl monomer ('Uso no 11i!)...0 to 50 g
It relates to a resin composition consisting of a copolymer obtained from 4% and a bath agent.

In other words, one characteristic of this method is that it uses a resin copolymerized with a small amount of a polyfunctional monomer.

The alkyl esters of acrylic acid or methacrylic acid [component (a)] used in the present invention include, for example, methyl (meth)acrylate, ethyl (meth)acrylate, globil (meth)acrylate, and (meth)acrylic acid. Butyl, octyl (meth)acrylate, lauryl (meth)acrylate,
(meth)acrylic acid 2-ethylhexyl etc.,
These are used as persimmons or a mixture of two or more.

The components are used in the copolymer in an amount of 46.0 to qq, qz. When this component exceeds 99.9% by weight, the amount of the component (mentioned below) will inevitably decrease, and the effects of the present invention will not be achieved. Also, the MiT Be(a) component is 96.0
If the percentage by weight is not calculated, use the following 9 components in addition to component (b).
is at least 46, considering the purpose of the present invention and coating film performance.
．． 0% by weight is required.

Moreover, the triallylamine [component (b)] used in the present invention has the following structure 1. (It has

CH-CH= CH2 2 N -CH2-CM = CH2 C82CH" CH2 The (O) component is used in a proportion of 0.1 to 4.0% in the copolymer. In the above range (b) r>Q minute is 0
．． If the amount is less than 1 car+f%, the effect of preventing Akishina's homo aggregation, which is the objective of the present invention, will be difficult to achieve.On the other hand, if it is used in excess of 4% by weight, the copolymer will become agglomerated during one immersion of the copolymer. Both are undesirable.

When the polar group of the component (B) in the copolymer is adsorbed on the surface of the pigment due to the presence of a small amount of pressure in the copolymer, the polar groups of the component (B) in the copolymer are adsorbed onto the surface of the pigment. It is thought that a resin layer is formed on the @kei surface, and as a result homoaggregation of pigments is prevented.

Furthermore, in the present invention, if necessary, 50%
Tokei - Other vinyl monomers [component (iii)] may be used in combination in the following proportions.

The components include (meth)acrylic, maleic anhydride/ly, (meth)chlorhexyl acrylate, styrene/, vinyltoluene, α-methylstyrene, novinylpenze/, flet: 11 vinyl, (meth) Examples include acrylonitrile, glycitur (meth)acrylate, 2-(meth)acrylic acid, and toroquinenal, which may be used singly or as a mixture of two or more.

In particular, in the copolymer of the present invention, a vinyl monomer containing a carboxylic group or an acid anhydride group, such as (meth)acrylic acid or maleic anhydride, is used to improve the adhesion to coated objects. is preferably used in a proportion of 0.1 to 1 chastity stitch in the copolymer. If the amount of the vinyl monomer exceeds 1% by weight, the water resistance, alkali resistance, etc. of the skin will be deteriorated, which is not desirable.

The Kiriri composition 1 of the present invention is added to a single-strand mixture consisting of the component (a), the component (b), and optionally the component (c) in an amount of 0.1 to 5N relative to the mixture. a polymerization initiator;
50-400, preferably 60-150
60-150c, 3-12 with weight% d
It can be obtained by carrying out a copolymerization reaction in a conventional manner in a dyeing process of about hours. At this time, it is okay to divide the whole sheep and use it before polymerization starts.For example, benzoyl theoxide, notar t-1 chill peroxide, methyl isobutyl ketone, etc. θ of peroxide] 1 ki Mya carbon filtration
Ab compounds such as azobisisobutyronitrile, azobisbereronitrile, and a/bis-2-methulfthyronitrile may be mentioned.

In addition, examples of the solvent include aromatic hexagroup hydrocarbon baths such as benzene, toluene, and ginkgo; Nine mouths of methyl isoptylktone/based bath cutting; Methyl acetate, ethyl acetate, q■ ester of rXFi acid butyl; Bath additives and the like can be mentioned, and these can be used alone or as a mixture of two or more kinds.

It is preferable that the molecular stitch of the upper and lower joints formed by the cutting method of + and +d is about 60,000 to 120,000.

The thus obtained mixture is diluted by melting if necessary, and then mixed with a pigment in a conventional manner.

Therefore, the resin composition of the present invention mixed with each material does not cause pigment production at all even when two or more types are mixed, and it can be used as a coating as it is, as a composition, and as a base material of the pond. Polymerization applied by the linear painting method also
The performance of 1 μ is comparable to that of 1 hikimai.

Further, the III fat composition of the present invention may be used as a coating composition by adding various additives, plasticizers, extender pigments, and other ingredients (fats) as necessary.

Furthermore, in the tit fat composition of the present invention, one of the components (c) is appropriately selected (using a single stitched vinyl material containing a hydroxyl group such as 2-hydroxyethyl (meth)acrylate).
In combination with polyisocyanate compounds or
It can be used as an agitating composition for carbonized paints.

The details of the present invention will be explained below using practical examples.

"Part" or "≠" indicates "M key part" or "direct key part".

Practical example 1 70 parts of methyl methacrylate, ethyl acrylate 10H5
1 Butyl acrylate 20 parts, maleic anhydride 0.4 part,
1.5 parts of triallylamine, 0.0 parts of azobisinobutyronitrile. am,) A mixture consisting of 40 parts of toluene and 10 parts of butyl acetate was charged into a four-day flask equipped with a stirrer, a thermometer, and a reflux condenser, and reacted at 85 ± 20 for 8 hours.
After the reaction path R, 50 parts of toluene was diluted to obtain a resin composition of the present invention.

The Samurai Rane'fc Juyoku 1 product is light brown and transparent, with a color number of 2 (
f-F Nerf, non-volatile content 50 cm, viscosity 60 Stokes,
Practical Examples 2 to 4 and Comparative Example 1, which were ``if'' (hereinafter referred to as ``sp''), and Comparative Example 1. A composition was obtained. The solution shape, number of colors, non-volatile content, and viscosity of the obtained Shinichi fat composition are also shown in the first coating.

Comparative Test 1 The Tani resin compositions obtained in Relaxation Examples 1 to 4 and Comparison @+31 were mixed in a sand grinder with the formulations shown in Table 2 of -C1 to give white, rust red, dark brown, black and Each primary color red paint was created.

Next, Table 5 r (as shown, 10 parts of white paint, 1 part of each primary color, mixed with 1 part of paint, and 4 parts of white/red)
Color/yellow/black = 1/1/2/1 (parts) should be mixed to create a paint with a viscosity of 90 to 120 U/
Air-through coating was applied to the entire surface of the slate board using 2DC) and 60-80% thinner in each category, and after drying for 5 minutes, half of the air-through coating was painted with VC. Dry for 2 minutes・l#! After that, I rubbed the whole part of the slope with my fingers and observed the difference in color. The unity is shown in Table 3 VC
Indicated. In the table, the ◎ mark indicates that there is no difference in color between the air spray part, the flowing part, and the rubbing part, and the Δ mark indicates f-?
The X mark indicates something different, and the XX mark indicates something very different.

2. It is clear from the trial results in Table 6 that the paint obtained from the liquorice composition of the present invention has no difference in color;
In all of the comparative example compositions, there were differences in color between the through-coated area and the flow-coated area, and there was a noticeable difference in the mixed colors of white/black, white/red rust/1, and brown/black. It was observed.

Comparative Test 2 I
Painted on glass board with 4 mil applicator and dried I#!
The notes were inspected, and then air-through painted on a slate board and dried for one week at room temperature. A trial run was conducted, and the results are shown in Table 4.

15 It is clear from the comparative testers in Table 4 that the odor control of plants prepared from the resin composition of the present invention is no less superior than other similar acrylic resin paints. Ta.

6

Claims (1)

[Claims] (a) Acrylic acid or methacrylic acid alkyl ester...46.0-99
．． 9% by weight, (b) Triallylamine...0
．． 1 to 460% by weight, and ←→ other vinyl monomers...0 to 50.0% by weight
A resin composition comprising a copolymer obtained from the above and a solvent.