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. 12, 2000
Filed:
May. 19, 1998
Kerry L Thompson, Panama City, FL (US);
Abhay K Deshpande, Panama City, FL (US);
Arizona Chemical Company, Panama City, FL (US);
Abstract
The specification discloses a method for making low softening point modified terpene-phenol resins having improved properties. In the process, phenol is reacted in an organic solvent containing a Lewis acid catalyst with an acyclic mono-unsaturated olefin and terpene under reaction conditions sufficient to produce an alkyl-modified terpene-phenol resin at a relatively high yield having a softening point in the range of from about 70.degree. to about 110.degree. C., a Gardner color below about 6 and a polydispersity index below about 1.5. Due to its relatively low Gardner color number, the resin may be used substantially as produced avoiding additional decoloration steps which result in reduced product yield and increased cost. The product contains less volatile components and has improved compatibility with A-B and A-B-A copolymers as compared with many conventional modified terpene-phenol resins.