Rubber-modified phenolic resin composition and method of manufac

Details Rubber-modified phenolic resin composition and method of manufac Rubber-modified phenolic resin composition and method of manufac

1992-04-27

1993-06-01

Seidleck, James J.

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

Synthetic resins

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

525132, 525436, 525109, 525119, 524504, 524509, C08L 5104, C08L 6110, C08L 6300

Patent

active

052160777

ABSTRACT:
A rubber-modified phenolic resin composition contains a novolak-type phenolic resin in which at least one modifying agent selected from the group consisting of an ABS resin and an MBS resin is homogeneously dispersed. The composition has good impact resistance and thermal shock resistance. The composition is prepared by adding at least one modifying agent described above to a novolak-type phenolic resin which is heated and melted at its softening point or more, so that the modifying agent is homogeneous dispersed in the resin. The resin composition is suitably used as a curing agent for an epoxy resin encapsulant for sealing electronic devices.

REFERENCES:
patent: 3536783 (1970-10-01), Jeffreys et al.
patent: 4226950 (1980-10-01), Holub et al.
patent: 4332858 (1982-06-01), Saitoh et al.
patent: 4378450 (1983-03-01), Ema et al.

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