Powdered phenol-formaldehyde resin

Details Powdered phenol-formaldehyde resin Powdered phenol-formaldehyde resin

1982-09-29

1984-01-03

Pertilla, Theodore E.

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

Synthetic resins

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

525934, 528165, 264 13, C08L 6110

Patent

active

044243006

ABSTRACT:
Phenol-formaldehyde resin powder capable of both heat softening and fast-cure is produced by spray drying a blend of resole and novolac prepolymers. The powder, when mixed, heated and pressed with wax-coated wood chips, flows and cures to form a superior, bonded flake waferboard.

REFERENCES:
patent: 2101635 (1937-12-01), Bender
patent: 2976574 (1961-03-01), Keutgen et al.
patent: 4098770 (1978-07-01), Berchem et al.

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