Packaging foam polyurethane composition employing novel polyol b

Details Packaging foam polyurethane composition employing novel polyol b Packaging foam polyurethane composition employing novel polyol b

1983-03-18

1984-03-27

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252182, 252357, 521 458, 521172, 521173, 5283081, 560 92, C08G 1814

Patent

active

044395515

ABSTRACT:
Economical, open-celled packaging foams of better quality than foams from commercial aromatic polyester polyols may be prepared with a novel polyol blend. The most important component in the polyol blend is an aromatic polyester polyol made from dibasic acid waste streams and recycled polyethylene terephthalate. This type of polyol made from waste or recycled reactant streams is economical to make and serves as an inexpensive substitute for a portion of more expensive amino polyols normally used.

REFERENCES:
patent: 3590070 (1971-06-01), Martin et al.
patent: 4048104 (1977-09-01), Svoboda et al.
patent: 4223068 (1980-09-01), Carlstrom et al.

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