Organosiloxane compositions

Details Organosiloxane compositions Organosiloxane compositions

2006-04-04

2006-04-04

Moore, Margaret G. (Department: 1712)

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

Synthetic resins

From silicon reactant having at least one...

C528S034000, C502S161000

Reexamination Certificate

active

07022800

ABSTRACT:
A moisture curable composition capable of cure to an elastomeric body, comprising a polymeric material having not less than two hydroxyl or hydrolyzable groups an alkoxysilane curative and a catalyst comprising:a mixture and/or reaction product of a compound (i) M[OR]4and compound (ii) M[OR′]x[Z]z, wherein M represents a metal having a valency of 4 selected from Group IVB of the Periodic Table, preferably titanium or zirconium. Each R and R′ may be a primary, secondary or tertiary aliphatic hydrocarbon or the group SiR93; and a compound iii) of the general formulain-line-formulae description="In-line Formulae" end="lead"?A-C(═O)R1—C(═O)—Bin-line-formulae description="In-line Formulae" end="tail"?wherein R1is a methylene group or a substituted methylene radical, A is selected from —(CX2)nC(R2)3wherein n is from 0 to 5, and an adamantyl group or a derivative thereof; B is selected from the group of —(CX2)tC(R2)3wherein t is from 0 to 5; a monovalent alkyl group having from 1 to 6 carbon atoms and; OR3, wherein R3is selected from the group of —(CX2)tC(R2)3and a monovalent alkyl group having from 1 to 6 carbon atoms; wherein each X is the same or different and is selected from the group of a halogen radical and hydrogen, each R2is the same or different and is selected from the group of a halogen radical and an alkyl radical having one to eight carbon atoms, and when n is greater than 0 at least one of X or R2is a halogen radical

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