JPH0716561B2 - Hard surface dry finish - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to hard surface dry finishes.

[0002]

2. Description of the Related Art Generally, just rinsing a hard surface container with hot water causes water droplets to adhere to the surface of the hard surface container, so that it takes a long time to dry, and even after drying, spots remain and the appearance is unsightly.

In order to solve these problems, rinsing water prepared by dissolving a dry finishing agent has been used to rinse dishes after washing. The drying finishing agent added here the rinse water, in order to thin the layer of water adhering to the hard surface, a surfactant to reduce surface tension of water is mainly used, polyoxyethylene alkylether, polyoxy Common surfactants such as ethylene allyl ether, polyoxyethylene-polyoxypropylene block polymers, and dialkylsulfosuccinates have been used.

[0004] These dry finishes are capable of reducing the surface tension of water by being dissolved in rinsing water and thinning the water film on the hard surface.

[0005]

The conventional dry finishing agents have been selectively compounded from surfactants which are water-soluble, have a large surface tension reducing force, and have little foaming. Among these, there are sucrose fatty acid ester, sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, propylene glycol fatty acid ester, etc. which are classified as emulsifiers for food additives.

Among these, sorbitan fatty acid esters,
Glycerin fatty acid ester, propylene glycol fatty acid ester, and part of sucrose fatty acid ester are water-dispersible or water-insoluble oil-soluble substances, and it is impossible to expect a reduction in the surface tension of water. Further, among the sucrose fatty acid esters, those with a high monoester content are water-soluble and have the ability to reduce the surface tension of water. However, if a high-concentration aqueous solution is used until the surface tension is significantly reduced, Foaming inside the washing machine overflows and overflows outside the machine, resulting in operation failure. Further, in an aqueous solution having a concentration such that bubbles do not overflow, almost no decrease in surface tension is recognized, and, of course, almost no dry finishing effect is recognized.

On the other hand, regarding the polyglycerin fatty acid ester, according to the study of the present inventor, it was found that those having a certain fatty acid or organic acid as a residue show a remarkable decrease in surface tension at a low concentration. Was issued.

[0008]

Therefore, based on the above findings, the present invention is based on the above findings. In the molecule, fatty acid residue having 1 to 5 carbon atoms and / or organic acid residue having 2 to 6 carbon atoms and carbon Number 6
The present invention proposes a hard surface dry finish containing a polyglycerin fatty acid ester having 18 to 18 fatty acid residues.

The polyglycerin fatty acid ester used in the present invention has an average degree of polymerization of polyglycerin calculated from the hydroxyl value, and is preferably di-decaglycerin, more preferably hexa-decaglycerin.

On the other hand, examples of the fatty acid having 1 to 5 carbon atoms include formic acid, acetic acid, propionic acid, butyric acid and valeric acid. Further, as the organic acid having 2 to 6 carbon atoms, oxalic acid,
Lactic acid, succinic acid, tartaric acid, gluconic acid, glutamic acid, etc. can be mentioned. Further, as a raw material of a fatty acid having 6 to 18 carbon atoms, fatty acid residues of oils and fats such as coconut oil, beef tallow, palm oil, palm kernel oil and castor oil can be used, preferably caprylic acid, capric acid and lauric acid. .

In addition to the polyglycerin fatty acid ester and water, the dry finishing agent according to the present invention may contain one or more ethyl alcohol, propylene glycol or glycerin sufficient to solubilize them. Further, sucrose fatty acid ester, sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, propylene glycol fatty acid ester and the like, which are recognized as food additives, may be added.

[0012]

The aqueous solution containing the dry finishing agent according to the present invention does not cause component separation in a wide temperature range,
A stable finishing liquid can be obtained.

Further, the dry finishing agent according to the present invention is used, for example, by diluting it to 10000 to 20000 times, and in this case as well, there is no trouble due to bubbles, and it can be washed without leaving spots or spots on the hard surface after washing is completed. And could be dried in a short time.

[0014]

EXAMPLES Examples of the present invention will be shown below. Regarding the finishing agent compositions of Examples 1 to 6 and Comparative Examples 1 to 3 shown in Table 1,
(1) Gloss of the tableware after drying, (2) Spots left on the cup,
Table 2 below shows the test results for the four evaluation items of (3) transparency of cup and (4) amount of foam in the washing machine.

According to this, for the compositions of Examples 1 to 6, generally good results were obtained for all four evaluation items, but unfavorable results for Comparative Examples 1 to 3.

[0016]

[Table 1]

[0017]

[Table 2]

Claims (1)

[Claims] 1. A polyglycerin fatty acid ester having a fatty acid residue having 1 to 5 carbon atoms and / or an organic acid residue having 2 to 6 carbon atoms and a fatty acid residue having 6 to 18 carbon atoms in the molecule is contained. A hard surface dry finish characterized by the following.