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:
Dec. 24, 2002
Filed:
Mar. 20, 2001
Applicant:
Inventors:
Assignee:
Rhein Chemie Rheinau GmbH, Mannheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 7/502 ; C08L 7/712 ; C09K 5/18 ; C09K 5/29 ;
U.S. Cl.
CPC ...
C08L 7/502 ; C08L 7/712 ; C09K 5/18 ; C09K 5/29 ;
Abstract
The invention relates to carbodiimide-based block copolymers, a method of preparing them and also their use as hydrolysis stabilizers in ester-group-containing polymers. The advantages of the block copolymers according to the invention are, in particular, their high efficiency at low dosage as hydrolysis protection in ester-group-containing polymers, and also their nontoxic behavior, their high thermal stability and their good compatibility during incorporation in the polymeric matrix of the polymers to be protected.