Organic compounds -- part of the class 532-570 series – Organic compounds – Silicon containing
Patent
1988-11-07
1990-10-09
Shaver, Paul F.
Organic compounds -- part of the class 532-570 series
Organic compounds
Silicon containing
556413, 556426, 556427, 556446, C07F 708, C07F 710, C07F 718
Patent
active
049622188
ABSTRACT:
Novel compositions of silicone/polyether block copolymers are provided which are useful as surfactants in several classes of polyurethane foam production. While conventional copolymers have a polysiloxane backbone with pendant polyethers, the surfactants of the present invention are the reverse with siloxane pendants on a polyether chain. These novel non-hydrolyzable polysiloxane polyoxyalkylene copolymers which are characterized by an "inverted" structure, i.e., polyoxyalkylene backbones with lateral and/or terminally pendant polysiloxanes, represent species that are of a narrow molecular weight and compositional distribution and are free of unreacted polyether or non-modified silicone oil diluent. These surfactants are useful in various urethane foam systems and can also display aqueous wetting properties.
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Blevins Charles H.
Greene George H.
Matlock Paul L.
Murphy Gerald J.
Deppenbrock Bonnie L.
Shaver Paul F.
Union Carbide Chemicals and Plastics Company Inc.
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