Method for the manufacture of prepregs and their use

Details Method for the manufacture of prepregs and their use Method for the manufacture of prepregs and their use

1987-12-14

1988-11-08

Beck, Shrive

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

4273897, 427245, B05D 512

Patent

active

047833459

ABSTRACT:
Prepregs can be prepared by impregnating reinforcement materials such as glass, carbon or plastic (in the form of fibers or nonwoven or woven materials) with a solution of a polyepoxy resin and a polyamine as a hardener and subsequent drying. For the manufacture of storage-stable prepregs based on polyepoxy resins, 1,3,5-tris(3-amino-4-alkylphenyl-2,4,6-trioxo-hexahydrotriazine with a C.sub.1 - to C.sub.4 alkyl radical is used as the hardener. The new method leads to storage-stable prepregs and assures that composite materials, especially circuit boards, manufactured therefrom meet the requirements for these materials.

REFERENCES:
patent: 2838511 (1953-06-01), Kogon
patent: 3972765 (1976-08-01), Kondo
patent: 4024305 (1977-05-01), Alpaugh
patent: 4525534 (1985-06-01), Rasshofer
patent: 4597996 (1986-07-01), Chellis
patent: 4713137 (1987-12-01), Sexton

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