Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1999-03-25
2000-08-08
Boykin, Terressa M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C08G 6300
Patent
active
061003670
ABSTRACT:
A method of preparing a coating agent, the method comprising the steps of (I) reacting (A) a polymer having at least two organic groups containing carbon-carbon unsaturated bonds with (B) an alkoxysilane containing a silicon-bonded hydrogen atom in an organic solvent and in the presence of a hydrosilylation catalyst to produce a solution containing an alkoxysilyl-functional polymer, wherein component (A) has a number-average molecular weight of 500 to 100,000 and has a principal chain comprise a polycarbonate or a polyallylate; and the alkoxysilane is an alkoxysilane having the formula H--SiR.sup.3.sub.3-a (OR.sup.4).sub.a or a partial hydrolyzate thereof, wherein R.sup.3 is a monovalent hydrocarbon group having 1 to 10 carbon atoms, R.sup.4 is a monovalent hydrocarbon group having 1 to 8 carbon atoms, and a is from 1 to 3; (II) adding an adsorbing agent to the solution; wherein the absorbing agent is selected from the group consisting of active carbon, silica, silica gel, glass beads, and silane-treated absorbing agents formed therefrom to form a mixture; and (III) separating the absorbing agent from the mixture to produce a coating agent containing not more than 1 part per million of the hydrosilylation catalyst. A coating agent prepared by the aforementioned method and a coating material formed by applying the coating agent to a substrate.
Kobayashi Hideki
Masatomi Toru
Boykin Terressa M.
Dow Corning Toray Silicone Co. Ltd.
Milco Larry A.
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