Method of producing copolymer latex using for aqueous paint

Details Method of producing copolymer latex using for aqueous paint Method of producing copolymer latex using for aqueous paint

2007-05-22

2007-05-22

Choi, Ling-Sui (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S828000, C524S575000, C524S832000, C524S833000

Reexamination Certificate

active

10909375

ABSTRACT:
A copolymer latex for chipping-resistant aqueous paint capable of remarkably improving balance of chipping-resistance, strength of adherence with metal, water-resistance and high resistance for cycles of cool and heat is provided.This is achieved by a method for producing a copolymer latex using for chipping-resistant aqueous paint, the method comprising emulsion-polymerizing 20 to 80 parts by weight of a conjugated diene as a monomer, 0.5 to 15 parts by weight of an ethylenically unsaturated carboxylic acid as a monomer, 5 to 40 parts by weight of an aromatic vinyl compound as a monomer, 5 to 40 parts by weight of an unsaturated alkyl carboxylate as a monomer and optionally not more than 69.5 parts by weight of other compound having vinyl group copolymerizable therewith as a monomer based on 100 parts by weight in the total of the monomers, wherein 100 wt % of the amount of conjugated diene, 100 wt % of the amount of ethylenically unsaturated carboxylic acid, 95 to 50 wt % of the amount of aromatic vinyl compound and 95 to 50 wt % of the amount of the unsaturated alkyl carboxylate are added in the former stage of the emulsion-polymerization, and 5 to 50 wt % of the amount of the aromatic vinyl compound and 5 to 50 wt % of the amount of the unsaturated alkyl carboxylate are added at the later stage of emulsion-polymerization.

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patent: 5444118 (1995-08-01), Tsuruoka et al.
patent: 04359001 (1992-12-01), None
patent: 10182709 (1998-07-01), None

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