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:
Jul. 28, 1981
Filed:
Aug. 13, 1979
Jean Heuschen, Malmedy, BE;
Robert Jerome, Tilff, BE;
Philippe Teyssie, 85, B. 4121 Neuville-en-Condroz, BE;
Other;
Abstract
Block and graft lactone copolymers are prepared by reacting a base polymer containing hydroxyl groups with an organometallic catalyst of the formula ##STR1## wherein R.sub.1 ', R.sub.2 ', R.sub.3 ', and R.sub.4 ' are alkoxy groups (alcoholate groups), M' is a trivalent metal and M is a divalent metal, whereby the catalyst becomes bonded to the base polymer by way of the hydroxyl groups. Then the remaining alkoxy groups are converted to acyl groups and thereafter the organometalic end-groups are reacted with a lactone to form the lactone polymer moiety. The resulting block and graft copolymers are particularly useful when blended with other polymers, as for example polyvinyl chloride.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile