The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 06, 1986
Filed:
Sep. 26, 1983
Frederick E Hardy, Gosforth, GB;
James E Thompson, Cincinnati, OH (US);
The Procter & Gambel Company, Cincinnati, OH (US);
Abstract
A hydrophilic phenol ester derivative, especially a sulphonated or carboxylated phenol ester is prepared by reacting a C.sub.6 -C.sub.18 substituted or unsubstituted aliphatic carboxylic acid with a C.sub.2 -C.sub.3 alkanoic anhydride, and reacting the resultant C.sub.6 -C.sub.18 acid anhydride with a substituted phenol such as an alkali metal phenol sulphonate salt or hydroxybenzene carboxylic acid to give a C.sub.6 -C.sub.18 acyloxy derivative of a substituted benzene. The two stage process may be carried out in the same reaction vessel without the use of solvents. The products are useful as peroxyacid bleach precursors.