Chemical process and products
AssigneeCiba-Geigy Corporation
InventorsDonald Richard Randell, Wilfred Pickles
Life of this patent
Estimating the term…
Abstract
Phosphorylated alkylated phenol/phenol ester mixtures in which the weight ratio of the alkyl moiety to the phenol moiety ranges from 0.05 to 0.65, and the number of carbon atoms per alkyl moiety ranges from 3 to 16, preferably from 3 to 12, which mixtures have satisfactory viscosity range and impart to polymeric materials and especially to polyvinylchloride plasticized therewith good light and heat stability; a process for producing such phosphorylated alkylated phenol/phenol ester mixtures; and polymeric materials plasticized therewith.
Claims3
A composition consisting essentially of polyvinylchloride and as a plasticizer therefore, a plasticizing amount of a phosphate ester composition consisting essentially of a phosphorylated tertiary butylated phenol/phenol ester mixture wherein the weight ratio of the tertiary butyl moiety to phenol moiety ranges from 0.076 to about 0.187, which ester is prepared by steps comprising:
- a. alkylating at a temperature of about 15.degree. C to 250.degree. C in the presence of a Lewis acid or a Bronsted acid as a catalyst, phenol with isobutylene or diisobutylene to obtain a tertiary butylated phenol reaction mixture, and
- b. reacting said tertiary butylated phenol reaction mixture with a phosphorylating agent.
Dependencies are inferred from the claim text.