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US 4,539,378 AGranted
Vinyl polymer polyols made using epoxy resin-modified polyols
AssigneeTexaco Inc.
InventorsMichael Cuscurida, Ernest L. Yeakey
Life of this patent
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Abstract
Vinyl polymer polyols made by polymerizing in situ via a free-radical mechanism one or more vinyl monomers in an epoxy resin-modified polyol are described. Preferably, styrene and acrylonitrile are copolymerized in a polyol made by adding epoxy resin to the alkoxylation of a polyol initiator having 3 to 4 hydroxyl groups. The vinyl polymer polyols of this invention give flexible polyurethane foams with greater load-bearing properties.
Claims14
A vinyl polymer polyol prepared by the process comprising
- polymerizing via a free-radical reaction a monomer component consisting of at least one vinyl monomer in the presence of an epoxy resin-modified polyol.
A vinyl polymer polyol prepared by the process comprising
- polymerizing via a free-radical reaction a vinyl monomer component selected from the group consisting of styrene, acrylonitrile, methyl methacrylate, methyl acrylate, butadiene and mixtures thereof, in the presence of an epoxy resin-modified polyol having a 2,000 to 7,000 molecular weight, in which the polymer loading of the polyol is in the range of about 5 to 50 wt. %.
A vinyl polymer polyol prepared by the process comprising
- polymerizing via a free-radical reaction
- a. a vinyl monomer component consisting of styrene and acrylonitrile in a molar ratio ranging from 9:1 to 1:9 in the presence of a free-radical initiator, also in the presence of
- b. an epoxy resin-modified polyol made by reacting a polyol initiator having an active hydrogen functionality of 3 to 8 and one or more alkylene oxides with an epoxy resin such that the epoxy resin is added internally along the length of the resultant epoxy resin-modified polyol which has a 2,000 to 7,000 molecular weight,
- at a temperature in the range of 75.degree. to 150.degree. C. and a pressure in the range of atmospheric to about 100 psig, to give a vinyl polymer polyol with a polymer loading in the range of 5 to 50 wt. %.
1 more element
Dependencies are inferred from the claim text.