Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Reexamination Certificate
2007-04-03
2007-04-03
Zemel, Irina S. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
C528S021000, C528S029000, C528S041000, C528S274000, C527S311000, C527S600000, C524S714000, C524S726000
Reexamination Certificate
active
10526729
ABSTRACT:
An organopolysiloxane-modified polysaccharide prepared by esterification reacting (A) an organopolysiloxane having residual carboxylic anhydride groups and (B) a polysaccharide having hydroxyl groups, wherein the organopolysiloxane is bonded to the polysaccharide through half ester groups, and a process for the preparation of organopolysiloxane-modified polysaccharide, in which component (A) and component (B) are subjected to an esterification reaction in the presence of (C) a non-protonic polar solvent. The organopolysiloxane-modified polysaccharide comprising polysaccharide and organopolysiloxane bonded thereto through half ester groups is novel. The process for the preparation of organopolysiloxane-modified polysaccharide permits introduction of organopolysiloxane into polysaccharide at a high introduction ratio.
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English language Abstract for JP 5-331291 extracted from espacenet.com database dated Jul. 28, 2005.
English language Abstract for JP 7-070204-217040 extracted from espacenet.com database dated Jul. 28, 2005.
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English language Abstract for JP 2002-146025 extracted from espacenet.com database dated Jul. 28, 2005.
Hayashi Masayuki
Okawa Tadashi
Dow Corning Toray Silicone Company, Ltd.
Howard & Howard Attorneys P.C.
Zemel Irina S.
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