COMPOSITION OF WATER REPELLENT AND WATERPROOF

Abstract

The present invention relates to a novel waterproof/water-repellent composition in which the shrinkage, expansion, deterioration, aging, etc. of the conventional waterproof/water-repellent composition are alleviated and, more specifically, to a reinforced waterproof/water-repellent composition capable of preventing a crevice leakage due to the shrinkage of the conventional silicone without causing a shrinkage after construction, which thus provides a transparent aqueous acrylic silicone-based waterproof/water-repellent composition comprising: 100 parts by weight of composition A, wherein the composition A includes 1 to 3 wt % of a silyl compound of formula (1) below, 1 to 3 wt % of organosilane of formula (2) below, 1 to 2 wt % of aminosiloxane of formula (3) below, 4 to 12 wt % of one or two or more aqueous acrylic resins selected from butylacrylate, ethylacrylate, methylacrylate, 2-ethylhexyl acrylate, methacrylates, 2-chloroethyl vinyl ether (2-chloroethyl vinyl ether), hydroxyethyl methacrylate, butyl methacrylate, and trimethylolpropane triacrylate (TMPTA), 0.03 to 0.05 wt % of a pH stabilizer, 0.003 to 0.005 wt % of a chelating agent, and 80 to 92 wt % water,

##STR00001## wherein R1 is a linear or branched saturated alkyl group having 1 to 5 carbon atoms, and R2 is a linear or branched saturated alkyl group having 1 to 18 carbon atoms,

##STR00002## wherein R2 is an alkyl group having 1 to 12 carbon atoms, and R3 is an alkoxy group having 1 to 6 carbon atoms,

##STR00003## wherein R3 is a saturated alkyl group having 1 to 5 carbon atoms, R4 is an alkyl group having 1 to 18 carbon atoms containing at least one nitrogen (N), and n is 3 or more; 0.5 to 5 parts by weight of composition B including 27 to 29 parts by weight of 2-ethylhexyl acrylate, polymer with 1-methyl-4-vinylbenzene and isobutyl methacrylate, and 71 to 73 parts by weight of water; and 70 to 87 parts by weight of silica powder, in which the composition is excellent in non-shrinkability and continuous elasticity and has a remarkable anti-slippery effect, etc., due to the roughness caused by the silica sand powder on the solidified floor surface while solving the problems of the conventional waterproof/water-repellent composition.

Claims

1. A waterproof/water-repellent composition which provides a transparent aqueous acrylic silicone-based waterproof/water-repellent composition comprising: 100 parts by weight of composition A, wherein the composition A includes 1 to 3 wt % of a silyl compound of formula (1) below, 1 to 3 wt % of organosilane of formula (2) below, 1 to 2 wt % of aminosiloxane of formula (3) below, 4 to 12 wt % of one or two or more aqueous acrylic resins selected from butylacrylate, ethylacrylate, methylacrylate, 2-ethylhexyl acrylate, methacrylates, 2-chloroethyl vinyl ether (2-chloroethyl vinyl ether), hydroxyethyl methacrylate, butyl methacrylate, and trimethylolpropane triacrylate (TMPTA), 0.03 to 0.05 wt % of a pH stabilizer, 0.003 to 0.005 wt % of a chelating agent, and 80 to 92 wt % water, ##STR00010## wherein R1 is a linear or branched saturated alkyl group having 1 to 5 carbon atoms, and R2 is a linear or branched saturated alkyl group having 1 to 18 carbon atoms, ##STR00011## wherein R2 is an alkyl group having 1 to 12 carbon atoms, and R3 is an alkoxy group having 1 to 6 carbon atoms, ##STR00012## wherein R3 is a saturated alkyl group having 1 to 5 carbon atoms, R4 is an alkyl group having 1 to 18 carbon atoms containing at least one nitrogen (N), and n is 3 or more; 0.5 to 5 parts by weight of composition B including 27 to 29 parts by weight of 2-ethylhexyl acrylate, polymer with 1-methyl-4-vinylbenzene and isobutyl methacrylate, and 71 to 73 parts by weight of water; and 70 to 87 parts by weight of silica powder.

2. The waterproof/water-repellent composition of claim 1, wherein the waterproof/water-repellent composition further comprises one to three components out of silicic acid, diethoxyoctylsilyl trimethylsilyl ester (CAS No. 216689-57-5), n-octyltriethoxysilane (CAS No. 2943-75-1), siloxanes and silicones, di-Me, polymers with 3-(2-aminoethyl)aminopropyl silsesquioxanes, hydroxy-terminated (CAS No. 68554-54-1).

Description

MODE FOR INVENTION

[0043] In order to take the composition of Patent Registration No. 10-2043857 and silicon in the related art as comparative examples and compare with Example 1 of the present invention, a waterproof/water-repellent composition was prepared as Example 1 of the present invention by mixing 100 parts by weight of transparent aqueous acrylic silicone-based waterproof/water-repellent composition A formed by mixing 2 wt % of a silyl compound of formula (1) of the present invention, 2 wt % of organosilane of formula (2), 1.94 wt % of aminosiloxane of formula (3), and 8 wt % of butylacrylate as an aqueous acrylic resin; 0.06 wt % of a pH stabilizer and a chelating agent; and 86% by weight water, 1 part by weight of composition B formed of 28 parts by weight of an acrylic polymer and 72 parts by weight of water, and 80 parts by weight of silica powder.

[0044] Comparative Example 1 was provided by mixing/stirring 40 parts by weight of a first composition of Patent Registration No. 10-2043857, which is a waterproof/water-repellent composition of the related art, 30 parts by weight of a second composition, 5 parts by weight of an inorganic elastic resin portion, 10 parts by weight of an inorganic elastic powder portion, 5 parts by weight of a water-soluble acrylic resin, and 10 parts by weight of cement, and a commercially available silicone (to be constructed by shooting with a silicone gun) was prepared as Comparative Example 2.

[0045] Example 1 and Comparative Examples 1 and 2 were coated and compared with each other in terms of elasticity and non-shrinkage properties through drying, heat and UV exposure.

TABLE-US-00001 TABLE 1 Continuous elasticity Non-shrinkage Example 1 Excellent Excellent Comparative Poor Excellent Example 1 Comparative Poor Poor Example 2

[0046] As shown in table 1, it could be confirmed that Example 1 of the present invention has excellent elasticity and non-shrinkage even after undergoing poor drying, heat, and UV exposure. However, it could be confirmed that Comparative Example 1 has an excellent non-shrinkage property, but fails to maintain elasticity, while Comparative Example 2 (silicone) exhibits shrinkage and remarkably decreased elasticity.

[0047] In addition, as a result of comparing Examples in which a composition ratio of each component of the present invention slightly varies with Comparative Examples in which a composition ratio of Comparative Example 1 slightly varies, it could be understood that both show the same or similar results and may be applied to the floor for the purpose of waterproofing/repellency of concrete and buildings, thereby providing roughness and effective slip-resistant properties.

[0048] Furthermore, when Example of the present invention was put into a silicone gun and used for filling gaps, it was possible to maintain elasticity without shrinkage even after a considerable period of time elapsed.

[0049] Besides, it could be understood that the present invention may enhance a water-repellent function by mixing silicic acid, diethoxyoctylsilyl trimethylsilyl ester (CAS No. 216689-57-5), n-octyltriethoxysilane (CAS No. 2943-75-1), siloxanes and silicones, di-Me, polymers with 3-(2-aminoethyl)aminopropyl silsesquioxanes, hydroxy-terminated (CAS No. 68554-54-1).

[0050] Through the examples of the present invention, it could be confirmed that the present invention has the effect of the novel waterproof/water-repellent composition with significantly improved elastic, non-shrinkable, rough, and water repellent functions compared to the related art.

[0051] The configuration of the present invention is not limited to the above embodiments, and includes various embodiments that can be carried out in the conventional technical scope.