Functionalized silicone resins, methods for their...

Details Functionalized silicone resins, methods for their... Functionalized silicone resins, methods for their...

2007-03-20

2007-03-20

Peng, Kuo-Liang (Department: 1712)

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

Synthetic resins

From silicon reactant having at least one...

C528S034000, C528S035000

Reexamination Certificate

active

10637761

ABSTRACT:
Disclosed herein are silicone resins comprising structural units of the formulae:andat least one structural unit selected from the group consisting of:where “A” is a spacer group comprising C2to C50alkyl groups; “B” and “C” are spacer groups comprising C2to C20alkyl groups; “M1” comprises a Group III element; R1, R3, R6, and R7independently comprise OH, alkyl groups, or alkoxy groups; R2and R4independently comprise hydrogen, alkali metal, or alkyl groups; and R5comprises a alkyl group. Methods for preparing these silicone resins are also disclosed. The silicone resins are useful as catalysts for producing bisphenols.

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International Search Report; International Application No. PCT/US2004/025190; International Filing Date May 8, 2004; Date of Mailing Aug. 12, 2004; (7 pgs).

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