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...
Reexamination Certificate
2011-08-09
2011-08-09
Eashoo, Mark (Department: 1767)
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...
C524S837000, C524S839000
Reexamination Certificate
active
07994250
ABSTRACT:
To provide vinyl-urethane copolymers that can form cured articles having excellent hot-water resistance, water resistance, heat resistance, and weather resistance, and to provide production methods thereof.A vinyl-urethane copolymer contains at least one vinyl polymer chain and at least one urethane polymer chain, in which the vinyl polymer chain is combined with the urethane polymer chain through a linkage segment having a silicon-oxygen bond.A method produces a vinyl-urethane copolymer comprising at least one vinyl polymer chain and at least one urethane polymer chain, in which the vinyl polymer chain is combined with the urethane polymer chain through a linkage segment having a silicon-oxygen bond, by following Steps (X) and (Y): Step (X) of carrying out preparation of an aqueous dispersion or aqueous solution of a urethane polymer (A) having at least one silicon-containing hydrolyzable group; and Step (Y) of, in the aqueous dispersion or aqueous solution of the urethane polymer (A) having at least one silicon-containing hydrolyzable group, carrying out polymerization of an ethylenically unsaturated monomer (B) and carrying out preparation of a vinyl-urethane copolymer using a compound (C) having at least one functional group reactive with a silicon-containing hydrolyzable group and at least one functional group reactive with an ethylenically unsaturated bond-containing group in at least one period selected from before the polymerization reaction, during the polymerization reaction, and after the polymerization reaction.
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Nakayama Yoshitaka
Ogawa Shintaro
Origuchi Toshiki
Birch & Stewart Kolasch & Birch, LLP
Eashoo Mark
Konishi Co. Ltd.
Salvitti Michael A
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