Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ethylenically unsaturated reactant admixed with a preformed...
Patent
1978-11-27
1981-02-03
Hoke, V. P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ethylenically unsaturated reactant admixed with a preformed...
525 20, 260 457R, 260 457P, 260 457PH, 260 4585R, 260 459NP, 260 4595R, 260 4595L, C08K 552
Patent
active
042489768
ABSTRACT:
Flameproofing of aromatic polymers is achieved by adding a synergistic combination of (a) a phosphorus compound and (b) a compound of formula R(CH.sub.2 X).sub.n, wherein R is an aromatic or heterocyclic residue, X is a leaving group and n is at least 2. Preferred phosphorus compounds are esters of phosphoric acid. The flameproofed polymers may contain aromatic groups in the main chain or as side-groups, for instance styrene polymers and copolymers, aromatic polyesters, polycarbonates and polyphenylene oxides.
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Clubley Brian G.
Davis Boyce I. D.
Hyde Thomas G.
Lamb Frank
Randell Donald R.
Ciba-Geigy AG
Hoke V. P.
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