Thermoset resin with polyunsaturated monomer-grafted seed partic

Details Thermoset resin with polyunsaturated monomer-grafted seed partic Thermoset resin with polyunsaturated monomer-grafted seed partic

1993-04-01

1994-02-08

Sellers, Robert E.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 66, 525 68, 525 69, 523407, 523501, C08L 5104, C08L 6302, C08L 6110, C08L 6128

Patent

active

052849120

ABSTRACT:
A thermosetting resin composition comprising fine particles of an elastomer component homogeneously dispersed in a thermosetting resin is disclosed. The elastomer component comprises a rubbery copolymer prepared from a monomer mixture capable of producing a copolymer having a glass transition point of 25.degree. C. or lower and containing at least one crosslinking monomer having at least two unsaturated bonds in the molecule in the presence of seed polymer particles which are comprised of a polymer having a glass transition point of 25.degree. C. or lower. The possesses excellent impact resistance, mechanical strength, and adhesive strength. It is suitably used as a sealing material of semiconductors, an adhesive for print circuit boards, a molding material, a paint, and a lining material.

REFERENCES:
patent: 3856883 (1974-12-01), Dickie et al.
patent: 4082895 (1978-04-01), Backderf et al.
patent: 4252912 (1981-02-01), Tokas
patent: 4287106 (1981-09-01), Forgo et al.
patent: 4300972 (1981-11-01), Neubert
patent: 4778851 (1988-10-01), Henton et al.

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