Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1984-02-22
1985-06-04
Pertilla, Theodore E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
521167, 521174, 521175, 525523, 528103, 528418, 568609, 568620, 568623, 568624, 568625, C08L 6114, C08G 6508
Patent
active
045215723
ABSTRACT:
Novel modified polyether polyols made by first optionally alkoxylating, subsequent reaction with epoxy resins and final alkoxylation of mixtures of initiators is described. The initiator mixture is made up of about 60 to 90 wt. % of a partially alkoxylated trifunctional initiator and 10 to 40 wt. % of a secondary partially alkoxylated initiator having an active hydrogen functionality of from 4 to 8. Preferably, the alkylene oxide component is a blend of ethylene oxide and propylene oxide, and the resulting modified polyol molecules have 0.25 to 2.5 wt. % internally located epoxy resin. Flexible polyurethane foams made from these polyether polyols have improved load bearing properties as compared with those made from prior art polyols.
REFERENCES:
patent: 4309532 (1982-01-01), Cuscurida et al.
patent: 4316991 (1982-02-01), Speranza et al.
patent: 4323658 (1982-04-01), Speranza et al.
patent: 4451588 (1984-05-01), Speranza et al.
Cuscurida Michael
Peterson Bruce W.
Mossman David L.
Park Jack H.
Pertilla Theodore E.
Priem Kenneth R.
Texaco Inc.
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