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. 03, 2000
Filed:
Aug. 03, 1999
Donald Charles Grimm, Akron, OH (US);
Zeon Chemicals L.P., Louisville, KY (US);
Abstract
The present invention relates to a high clarity water sensitive carboxylated nitrile rubber composition which is particularly useful in making photopolymer formulations for printing plates utilized in flexographic printing applications. The present invention more specifically discloses a high clarity water sensitive carboxylated nitrile rubber composition which is comprised of (a) a carboxylated nitrile rubber which is comprised of repeat units which are derived from about 30 weight percent to about 60 weight percent 1,3-butadiene, from about 30 weight percent to about 50 weight percent acrylonitrile, and from about 10 weight percent to about 20 weight percent methacrylic acid, and (b) from about 1 to about 10 phr of at least one organic acid which contains at least three carboxyl groups. The carboxylated nitrile rubber of this invention will typically have a Mooney ML-4 viscosity of less than about 80. In applications where improved scorch safety is required the rubber composition will also contain from about 0.1 phr to about 7 phr of at least one oligomerized fatty acid.