Perstorp Ab

Carl-Axel E Sjogreen

Keith F Ogemark

Kent Sorensen

Goran Axelsson

Mans O Mansson

Mans O Manson

Bengt A Sallmen

Goran A Bergvall

A lubricant ester having enhanced hydrolytic stability is disclosed. The ester is a mono or diester of 2-ethyl-2-butyl-1,3-propanediol or an alkoxylate thereof and at least one carboxylic acid having 5-10 carbon atoms. The invention in a further aspect refers to a refrigeration working fluid comprising said ester and at least one halocarbon refrigerant.

Lubricant ester

Process for the production of di-trimethylolpropane

Compound for a water dilutable metal-working lubricant characterized in that it has the formula ##STR1## where R consists of an alkyl rest containing 3-15 carbon atoms,

Aqueous metal-working lubricant

Secondary stabilizer for vinyl chloride polymers consisting of a solid mixture obtained by melting together pentaerythritol and at least one of the compounds selected from the group consisting of dipentaerythritol, tripentaerythritol, trimethylol propane, neopentyl glycol, trimethylol ethane, anhydroennea heptitol, sorbitol, mannitol, bisphenol A and other organic hydroxy compounds containing at least two hydroxy groups. The stabilizer is characterized in that the mixture has the form of a dispersion of very fine-grained particles in a suitable liquid grinding agent, which dispersion has been obtained by wet grinding said mixture in said grinding agent.

Secondary stabilizer

Secondary stabilizer for vinyl chloride polymers, which stabilizer consists of a solid mixture obtained by melting together trimethylol propane and pentaerythritol and optionally one or more of the compounds selected from the group consisting of dipentaerythritol, tripentaerythritol, neopentyl glycol, trimethylol ethane, ditrimethylol propane, mannitol, sorbitol, anhydroennea heptitol, 1,2,6-hexane triol and glycerol.

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Perstorp, Sweden

Carl-Axel E Sjogreen