Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
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.
Brennan Michael E.
Cuscurida Michael
Yeakey Ernest L.
Mossman David L.
Park Jack H.
Priem Kenneth R.
Texaco Inc.
Welsh Maurice J.
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