Non-isomerizable olefinic polyoxyalkylene polymers and siloxane-

Details Non-isomerizable olefinic polyoxyalkylene polymers and siloxane- Non-isomerizable olefinic polyoxyalkylene polymers and siloxane-

1976-02-20

1977-11-22

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2604482E, 260 25AM, C07F 708

Patent

active

040596052

ABSTRACT:
This invention relates to novel polyoxyalkylene polymers characterized by olefinic endblocking groups in which the olefinic double bond is in the alpha position and is incapable of isomerizing or shifting to the beta or any other position. The novel polymers readily undergo addition reactions with siloxanes containing SiH to produce novel siloxane-polyoxyalkylene block copolymers that are useful as foam stabilizers for polyurethane foams. The olefinic double bonds undergo little side reactions during such addition reactions and so the product is relatively free of materials other than the block copolymer.

REFERENCES:
patent: RE25727 (1965-02-01), Haluska
patent: 2846458 (1958-08-01), Haluska
patent: 3280160 (1966-10-01), Bailey
patent: 3402192 (1968-09-01), Haluska
patent: 3427271 (1969-02-01), McKellar
patent: 3505377 (1970-04-01), Morehouse
patent: 3507923 (1970-04-01), Gessner et al.
patent: 3595894 (1971-07-01), Brown et al.

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