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. 06, 1987
Filed:
Jul. 02, 1985
Applicant:
Inventors:
Werner Ude, Darmstadt, DE;
Siegmund Besecke, Seeheim-Jugenheim, DE;
Achim Riemann, Marburg, DE;
Guenther Schroeder, Ober-Ramstadt, DE;
Assignee:
Rohm GmbH, Darmstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
568 14 ; 568 15 ; 568 16 ; 568 17 ;
Abstract
Compounds of the formula ##STR1## wherein R is lower alkyl or aryl, Y is oxygen or sulfur, m is 0 or 1, Ar is arylene, and X is halogen, methyl, or aryloxy, or polymers containing repeating units of this kind are prepared from a compound R--P(Y).sub.r Cl.sub.2, where r is 0 or 1 but is never greater than m, by reaction with one or two molar parts of a compound H--ArX in the presence of a Friedel-Crafts catalyst.