Polyurethane curing agent

Details Polyurethane curing agent Polyurethane curing agent

1975-02-27

1977-01-04

Cockeram, H.S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

252182, 260 25AM, 260 18TN, 260 775AM, C08G 1830, C08G 1832

Patent

active

040011801

ABSTRACT:
A new curing agent for the production of polyurethane elastomers, particularly for use at processing temperatures of from about ambient up to about 250.degree. F is disclosed. The new curing agent is the polyfunctional (including difunctional) reaction product of methylene bis (methyl anthranilate) and from about 0.025 to about 0.1 equivalents of an isocyanate-terminated prepolymer containing from 2 to about 10 percent excess isocyanate groups. Other components including a saturated monocarboxylic acid of from 2 to about 31 carbon atoms, another diamine compound (e.g., diamino diphenyl sulfone) or a polyfunctional hydroxyl group-containing compound may be incorporated into the curing agent.

REFERENCES:
patent: 2432148 (1947-12-01), Furness et al.
patent: 3105062 (1963-09-01), Graham et al.
patent: 3194793 (1965-07-01), Kogon
patent: 3429856 (1969-02-01), Hoeschele
patent: 3629168 (1971-12-01), Ryan

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