High load bearing polyurethane foams made from mixed initiator p

Details High load bearing polyurethane foams made from mixed initiator p High load bearing polyurethane foams made from mixed initiator p

1983-07-26

1984-05-29

Cockeram, H. S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521167, 521174, C08G 1814, C08G 1848

Patent

active

044515880

ABSTRACT:
High load bearing flexible polyurethane foams are made using novel polyether polyols which may be made by alkoxylating a mixture of initiators. 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 to be reacted with the initiator mixture is a blend of ethylene oxide and propylene oxide.

REFERENCES:
patent: 3332934 (1967-07-01), Booth et al.
patent: 3393243 (1968-07-01), Cuscurida
patent: 3433751 (1969-03-01), Yotsuzuka et al.
patent: 3442888 (1969-05-01), Degginger et al.
patent: 3535307 (1970-10-01), Moss et al.
patent: 3706714 (1972-12-01), Lloyd et al.
patent: 3847992 (1974-11-01), Moss
patent: 4166172 (1979-08-01), Klein
patent: 4316991 (1982-02-01), Speranza et al.
patent: 4380502 (1983-04-01), Mueller et al.

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