Process and product

Details Process and product Process and product

1981-04-01

1982-04-20

Nielsen, Earl A.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

525511, 528111, 528114, 528323, 528407, C08G 5952, C08G 5958

Patent

active

043260500

ABSTRACT:
Compounds typified by N,N'-polyoxyalkylene bis (pyrrolidinone-3-carboxylic acid) are useful as epoxy curing accelerators. Salts thereof, including alkali metal salts, are curing agents for isocyanurate foams.

REFERENCES:
patent: 2993021 (1961-07-01), Bavley et al.
patent: 3721617 (1973-03-01), Watt
patent: 4113697 (1978-09-01), Schulze et al.
patent: 4115361 (1978-09-01), Schulze et al.
patent: 4147857 (1979-04-01), Waddill et al.
patent: 4169177 (1979-09-01), Waddill et al.

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