Building exterior wall-coating emulsion compositions and building exterior walls
a technology for building exterior walls and emulsion compositions, applied in the direction of adhesive types, coatings, graft polymer adhesives, etc., can solve the problems of affecting the application of the product, affecting the application effect, and difficult to introduce a large amount of silicone resin components in the coating, etc., to achieve the effect of improving water resistance, weather resistance, water repellency and heat resistance, and improving elasticity
Inactive Publication Date: 2006-03-30
NISSHIN CHEM IND CO LTD
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Benefits of technology
[0017] The emulsion composition for building exterior walls of the invention is capable of forming an elastic, flexible coating which is endowed with water resistance, weather resistance, water repellency, adhesion and heat resistance and maintains these properties over a long period of time. The emulsion composition can thus be used as a base in a variety of
Problems solved by technology
Unfortunately, they essentially lack water resistance and weather resistance.
However, in the former approach wherein a vinyl polymerizable functional group-containing alkoxysilane is emulsion polymerized together with a radical polymerizable vinyl monomer, more alkoxy groups are retained because of inhibited hydrolysis and it is difficult to introduce a large amount of silicone resin component in a coating.
Thus important properties such as weather resistance are no
Method used
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[0075] Examples of the invention are given below together with Comparative Examples for illustrating the invention. Examples are not intended to limit the invention thereto. All parts and percents are by weight.
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Abstract
An emulsion composition for building exterior walls is provided comprising in admixture, [A] a graft copolymerized emulsion obtained by adding to (1) an oil-in-water type emulsion containing at least one organopolysiloxane having an organic group containing a radical reactive group or SH group, (2) a monomer or monomeric mixture containing at least 70 wt % of at least one monomer selected from acrylic and methacrylic monomers and effecting emulsion graft polymerization of component (2) to the organopolysiloxane, and [B] a silicone resin-containing emulsion. The emulsion composition is capable of forming an elastic, flexible coating which is endowed with water resistance, weather resistance, water repellency, adhesion and heat resistance and maintains these properties over a long period of time. It can thus be used as a base in a variety of paints and coating agents.
Description
CROSS-REFERENCE TO RELATED APPLICATION [0001] This application is a continuation-in-part of copending application Ser. No. 10 / 785,993 filed on Feb. 26, 2004, the entire contents of which are hereby incorporated by reference.TECHNICAL FIELD [0002] This invention relates to an emulsion composition for building exterior walls, comprising a graft copolymerized emulsion obtained through the emulsion graft copolymerization of a (meth)acrylic monomer or monomeric mixture thereof to an organopolysiloxane and a silicone resin-containing emulsion, and more particularly, to such an emulsion composition for building exterior walls capable of forming an elastic, flexible coating having water resistance, weather resistance, water repellency, adhesion and heat resistance and maintaining these properties over a long period of time. It also relates to a building exterior wall coated with the emulsion composition. BACKGROUND OF THE INVENTION [0003] In the paint and coating field, the transition of di...
Claims
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IPC IPC(8): C08F283/00C08F283/12C08L51/08C09D151/08C09J151/08
CPCC08F283/12C08L51/085C09D151/085C09J151/085C08L2666/02C08F283/124C08G77/12C08G77/42C08F220/10C09D183/10C08L83/00C08K5/57
Inventor OKUDA, HARUKAZUHATANAKA, MASAHIDEYAMAMOTO, AKIRA
Owner NISSHIN CHEM IND CO LTD
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