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:
Nov. 30, 2004
Filed:
Dec. 11, 2000
Daniel Klosiewicz, Newark, DE (US);
Atanu Biswas, Newark, DE (US);
Eastman Chemical Resins, Inc., Kingsport, TN (US);
Abstract
A hydrocarbon resin is prepared by (1) thermally polymerizing a mixture consisting essentially of (a) about 5% to 25% by weight styrene or aliphatic or aromatic substituted styrene, and (b) about 95% to 75% by weight based on total monomer content of a cyclic diolefin component comprising at least about 50% by weight dicyclopentadiene. A method of producing an aromatic-modified resin having a Mz of less than 2000 through the addition of about 5% to 25% by weight styrene in combination with about 95% to about 75% DCPD monomer at a rate to consume styrene monomer at a the rate at which it is added. Hydrogenation of this resin produces light colored, thermally stable products that are useful as tackifiers in adhesives.