Thermosetting compositions with improved latency, a process for

Details Thermosetting compositions with improved latency, a process for Thermosetting compositions with improved latency, a process for

1997-05-08

1998-10-06

Krass, Frederick

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

428 347, 428 357, 428 3692, 166270, 166272, 166295, 166300, C08G 5944, C08G 5950, C08G 6500

Patent

active

058177370

ABSTRACT:
Thermosetting compositions with improved latency are obtained by addition of a molten aromatic polyamine type curing agent to a liquid epoxy resin followed by cooling the mixture, causing the curing agent to form a suspension of fine particles in the epoxy resin by recrystallisation thereof. The compositions obtained can be used for the manufacture of prepregs with high latency for their use in processes requiring intermediate steps at 80.degree. C. over several hours.

REFERENCES:
patent: 3427282 (1969-02-01), Sundholm
patent: 3481900 (1969-12-01), Sundholm
patent: 4003876 (1977-01-01), Warfield et al.
patent: 5151471 (1992-09-01), Qureshi et al.

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