Process for making self-extinguishing laminates

Details Process for making self-extinguishing laminates Process for making self-extinguishing laminates

1978-06-27

1979-10-09

Derrington, James H.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156335, 260 459NP, 264134, 264137, 264258, C09J 502

Patent

active

041705084

ABSTRACT:
Self-extinguishing laminates are made by an improved process, wherein individual layers of a carrier material are impregnated with a thermosetting phenolic resin containing a flame-retardant agent and the impregnated layers are placed one above another and bonded together by compressing them at elevated temperature and under elevated pressure to give a hardened laminate. More specifically, finely pulverulent phosphorus pentanitride as a flame-retarding agent is dispersed in the plasticized or non-plasticized thermosetting phenolic resin, with or without a diluent; the phenolic resin, based on its solid matter content, and the phosphorus pentanitride being used in an approximate ratio by weight of 100:4 to 100:15; and the phenolic resin, based on its solid matter content, and the carrier being used in an approximate ratio by weight of 100:80 to 100:150.

REFERENCES:
patent: 3323944 (1967-06-01), Senez
patent: 3383267 (1968-05-01), Sunden

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