AQUEOUS RESIN DISPERSION

• Main Authors: KITAMOTO TAKESHI, HASHIMOTO TOMIO
• Format: Patent
• Language: English
• Published: 19.01.1999
• Edition: 6
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

PROBLEM TO BE SOLVED: To obtain the subject aqueous resin dispersion by radically polymerizing a specific ethylenically unsaturated monomer and a specific dimethylpolysiloxane using an emulsifier, a polymerization initiator and water as essential components. SOLUTION: The radical copolymerization of (A) a radically polymerizable ethylenically unsaturated monomer as methyl acrylate, etc., and (B) a dimethylpolysiloxane bearing 1 or more radically polymerizable unsaturated double bond in its molecule as methacryloxy-terminated dimethylpolysiloxane represented by formula II (R1 is CH=CH2 , etc.; n is 1 or more) or formula II is carried out using, as essential components, (C) an emulsifier as a compound of formula III (M1 is Na, etc.; R2 is C12 H25 ), (D) a polymerization initiator as benzoyl peroxide, etc. and (E) water. In a preferred embodiment, the amount of the component B is 0.1-50 pts.wt. per 100 pts.wt. of the component A; the component C is 0.1-10 pts.wt. and the component D is 0.1-10 pts.wt.