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...
Patent
1991-12-17
1992-08-25
Foelak, Morton
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...
C08J 303, C08L 7504
Patent
active
051419831
ABSTRACT:
An aqueous coating composition comprising, as essential components, an aqueous polyurethane resin (A) obtained by reacting a diisocyanate and glycols containing a carboxylic acid group-containing glycol to prepare an urethane prepolymer, neutralizing the urethane prepolymer and subjecting the neutralized urethane prepolymer to chain extension with a hydrazine derivative, and an aqueous dispersion (B) of an acrylic copolymer whose constituent monomers contain carbonyl group-containing monomer or an amido group-containing monomer in an amount of at least 0.5 part by weight per 100 parts by weight of total polymerizable monomers, wherein the weight ratio in terms of solid content, of the aqueous polyurethane resin (A) and the aqueous dispersion (B) of an acrylic copolymer is 100/5 to 5/100, and an aqueous coating composition obtained by, in the presence of the above aqueous polyurethane resin (A), polymerizing radical-polymerizable acrylic monomers (C) containing a carbonyl group-containing monomer or an amido group-containing monomer in an amount of at least 0.5 part by weight per 100 parts by weight of total polymerizable monomers, in such proportions that the weight ratio in terms of solid content, of the aqueous polyurethane resin (A) and the radical-polymerizable acrylic monomers (C) is 100/5 to 5/100.
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Hasegawa Yoshiki
Ohnishi Kiyoshi
Yoshino Fumio
Yoshioka Shin-ichi
Dainippon Ink & Chemicals Inc.
Foelak Morton
Sergent Rabon
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