Preparation of end-alkoxylated diorganopolysiloxanes

Details Preparation of end-alkoxylated diorganopolysiloxanes Preparation of end-alkoxylated diorganopolysiloxanes

1989-07-26

1991-10-08

Marquis, Melvyn I.

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...

528 18, 528 19, C08K 308

Patent

active

050555022

ABSTRACT:
Linear diorganopolysiloxanes having at least two alkoxy groups at each end of the polymer chain, well suited for formulation into single-component, storage-stable CVE polysiloxane compositions curable into elastomeric state in the presence of moisture, are prepared by functionalizing an alpha,omega-dihydroxydiorganopolysiloxane oil with a polyalkoxysilane, in the presence of a catalytically effective amount of a zinc complex of the formula: ##STR1##

REFERENCES:
patent: 3122522 (1964-02-01), Brown et al.
patent: 3161614 (1964-12-01), Brown et al.
patent: 3542901 (1970-11-01), Cooper et al.
patent: 4111890 (1978-09-01), Getson et al.
patent: 4460739 (1984-07-01), Ashby
patent: 4680364 (1987-07-01), Lucas

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