Ciba-geigy Ag

Frank Lamb

Donald Richard Randell

Brian G Clubley

Thomas G Hyde

Hugh Melvin Cooper

Malcolm Combey

Boyce I Davis

William D Phillips

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.

Flame-resistant polymer compositions

Aromatic hydrocarbon oligomers of the formula

Plastics composition

Functional fluid composition comprising an ester of a phosphorus acid and a compound of the formula I

Fire resistant functional fluid compositions based on phosphate esters

Caprolactone modified polyesters, derived from an aliphatic diol, an aliphatic dicarboxylic acid or mixtures thereof, optionally with a proportion not exceeding 10 mole % of an aromatic dicarboxylic acid and terminated with an alcohol or monocarboxylic acid are good plasticizers for thermoplastic polymers especially polyvinyl chloride.

Polyester plasticizers

A random polyester containing residues of aliphatic diols, aromatic dicarboxylic acids and hydroxyacids and being endstopped by monocarboxylic acids are useful plasticizers especially for polyvinyl chloride polymers.

Caprolactone modified polyesters derived from an aliphatic dihydroxy compound and a mixture of aliphatic dicarboxylic acids and a proportion above 10 mol % of the total acids used, of an aromatic dicarboxylic acid and terminated with an alcohol or monocarboxylic acid such that the molecular weight ranges from 500 to 1400 are good plasticizers for polymers, especially polyvinyl chloride.

Polyesters having an average molecular weight from 500 to 1400, containing dicarboxylic acid-, aliphatic diol- and hydroxy acid or lactone residues and which are endstopped by monohydric alcohols are useful plasticizers for example for PVC.

Polyesters derived from the reaction of a phthalic acid, with ethylene glycol, di-ethylene glycol or a polyethylene glycol and an aliphatic alcohol are used as plasticisers for vinyl acetate polymers.

Plasticized polymers of vinyl acetate

Polyesters derived from the reaction of a dibasic acid, a polyethylene glycol and an aliphatic alcohol are used as plasticizers for vinyl acetate polymers.

Polyesters derived from the reaction of a dibasic acid, ethylene glycol and an aliphatic alcohol are used as plasticizers for vinyl acetate polymers.

Growing community of inventors

Oldham, United Kingdom

Frank Lamb