Ciba-geigy Ag

Thomas G Hyde

Brian G Clubley

Donald Richard Randell

Frank Lamb

Boyce I Davis

John Francis Keenan

David Ronald Clark

William D Phillips

Robert Erik Brauchbar

The invention provides triaryl phosphates of the general formula ##STR1## wherein x is 1 or 2, R.sub.1 is hydrogen, R.sub.2 and R.sub.3 are the same or different and represent hydrogen, t-butyl or isopropyl, R.sub.4 is hydrogen or an isopropyl group and R.sub.5 is an isopropyl group, with the proviso that at least one of the aryl radicals is a di-isopropylphenyl radical, but not more than two of the three aryl groups are identical.

Triaryl phosphates

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

A thixotropic slurry is prepared comprising a compound having the formula ##SPC1## Wherein X and Y may be the same or different and each represents a mono- or di-substituted amino or alkoxy group and M represents an alkali metal or hydrogen, by mixing the wet filter cake obtained during the preparation of this compound with a dispersing agent such that the resulting slurry has a Brookfield viscosity from 200 to 10,000 centipoises at 6 r.p.m. A detergent composition is prepared by adding the above obtained slurry to a detergent and mixing.

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Sale, United Kingdom

Thomas G Hyde