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:
Oct. 19, 1976
Filed:
Dec. 17, 1974
John Desmond Collins, Albrighton, EN;
Iftikhar Hussain Siddiqui, Edgbaston, EN;
Albright & Wilson Limited, Warley, EN;
Abstract
##EQU1## where x, x', y and y' are 1 - 6, R.sub.1, R.sub.2, R.sub.6 and R.sub.7 are C.sub.1.sub.-12 alkyl, cycloalkyl, aromatic or aralkyl hydrocarbyl, R.sub.4 and R.sub.9 are as defined for R.sub.1 or are C.sub.13.sub.-21 alkyl, C.sub.2.sub.-20 alkenyl or substituted aromatic hydrocarbyl, R.sub.3, R.sub.5, R.sub.8 and R.sub.10 are as defined for R.sub.4 or are hydrogen or a pair of R.sub.3 and R.sub.5 or R.sub.8 and R.sub.10 together with the carbon atom to which they are joined form a cycloalkyl ring and R.sub.11 is an aliphatic radical of 2-12 carbon atoms having CH and optionally O and/or S in COC, ##EQU2## or --CSC-- groups, or optionally substituted cyclohexylene or phenylene.