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

1988-09-13

1990-04-10

Pertilla, Theodore E.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

174 522, 525 65, 525 68, C08L 6300

Patent

active

049161741

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: 4529755 (1985-07-01), Nishikawa et al.
patent: 4719255 (1988-01-01), Yoshizumi et al.

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