Patent GB-969095-A (GB)
Title: Phenolic resin compositions
IPC: C08K5/03
Filed: 1962-07-09
Abstract: A phenolic resin composition contains, in quantities sufficient to render the composition self-extinguishing, a chlorinated polyphenyl and a halogen-containing phosphate.  Specified phosphates are those of the formulae <FORM:0969095/C3/1> <FORM:0969095/C3/2> <FORM:0969095/C3/3> The Specification describes the preparation of phenolic resins from phenol, formalin, tung oil, hexamethylene tetramine and (A) cresylic acid and (B) and (C) styrene, the reaction products being mixed with toluene and ethanol.  The examples disclose compositions comprising: (I) resin B, a chlorinated terphenyl and bis (b -bromoethyl) -b - chloroethylphosphate; (II) resin A, a chlorinated terphenyl and a phosphate of formula <FORM:0969095/C3/4> where n is 1; (IIIA) resin C, a chlorinated terphenyl and a phosphate as in (II); (IIIB) resin C, a chlorinated terphenyl and a phosphate of formula <FORM:0969095/C3/5> where n is 1, (IV) resin B, a chlorinated terphenyl and a phosphate as in (II); (V) resin B, a chlorinated biphenyl and a phosphate as in (II); (VI) resin B, a chlorinated mixture of bi- and terphenyl and a phosphate of formula <FORM:0969095/C3/6> where n is 1; (VII) resin A, a chlorinated terphenyl and a phosphate of formula <FORM:0969095/C3/7> (VIII) resin C, a chlorinated mixture of bi- and ter-phenyl and a phosphate of formula <FORM:0969095/C3/8> where n is 2; (IX) resin B, a chlorinated terphenyl and a phosphate as in (VIII) where n is 4; (X) resin B, a chlorinated terphenyl and a phosphate of formula <FORM:0969095/C3/9> and (XI) resin B, a chlorinated terphenyl and a phosphate of formula <FORM:0969095/C3/10> where n is 2. The compositions are used in the preparation of laminates. Specifications 941,706, 960,368 and 961,443 are referred to.ALSO:Electrical grade cotton linters paper preimpregnated with a liquid low molecular weight phenol-formaldehyde resin are pre-impregnated with self-extinguishing phenolic compositions comprising:- (I) resin B, a chlorinated terphenyl and bis (b -bromoethyl)-b -chloroethyl phosphate; (II) resin A, a chlorinated terphenyl and a phosphate of the formula <FORM:0969095/D1-D2/1> where n is 1; (IIIA) resin C, chlorinated terphenyl and a phosphate as in (II); (IIIB) resin C, a chlorinated terphenyl and a phosphate of formula <FORM:0969095/D1-D2/2> where n is 1; (IV) resin B, a chlorinated terphenyl and a phosphate as in (II); (V) resin B, a chlorinated biphenyl and a phosphate as in (II); (VI) resin B, a chlorinated mixture of bi-and terphenyl and a phosphate of formula <FORM:0969095/D1-D2/3> where n is 1; (VII) resin A, a chlorinated terphenyl and a phosphate of formula <FORM:0969095/D1-D2/4> (VIII) resin C, a chlorinated mixture of bi-and terphenyl and a phosphate of formula <FORM:0969095/D1-D2/5> where n is 2; (IX) resin B, a chlorinated terphenyl and a phosphate as in (VIII); (X) resin B, a chlorinated terphenyl and a phosphate of formula <FORM:0969095/D1-D2/6> and (XI) resin B, a chlorinated terphenyl and a phosphate of the formula <FORM:0969095/D1-D2/7> where n is 2.  The specified resins are derived from phenol, formalin, tung oil, hexamethylene tetramine and:- (A) cresylic acid and (B) and (C) styrene.  Specifications 941, 706, 960,368 and 961,443 are referred to.