Cross-linker for flexible and semi-flexible polyurethane foams

Details Cross-linker for flexible and semi-flexible polyurethane foams Cross-linker for flexible and semi-flexible polyurethane foams

1977-01-06

1978-09-19

Padgett, Benjamin R.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252182, 528367, 260453A, C08G 1832, C08J 906

Patent

active

041153014

ABSTRACT:
Novel flexible and semi-flexible polyurethane foams having good hardness properties and superior resistance to permanent set are disclosed. The novel foams are produced by reacting an organic polyisocyanate with a polyether polyol and employing as a cross-linker an effective amount of a polymethylene polyphenylamine having a functionality of from about 2.2 to about 2.7 having a specific isomeric distribution. The cross-linker is easy to handle and is compatible with urethane foam systems.

REFERENCES:
patent: 3362979 (1968-01-01), Bentley
patent: 3517062 (1970-06-01), Powers
patent: 3580869 (1971-05-01), Rhodes et al.

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