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:
Apr. 24, 1984
Filed:
Jun. 07, 1982
Applicant:
Inventors:
Eugene L Coggins, Malvern, PA (US);
William D Vanderwerff, West Chester, PA (US);
Assignee:
Sun Tech, Inc., Philadelphia, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524476 ; 524477 ; 524485 ;
Abstract
Phenyltetralylbutane (PTB) is used to plasticize polyvinylchloride (PVC) resins. The PTB in one embodiment is prepared by refluxing tetralin an flowing condensed vapors of the tetralin over a bed of strongly acidic catalyst, which may for example be a synthetic acid 'Y' type zeolite. In one embodiment, the PTB is used as a secondary plasticizer, with a primary plasticizer such as di(2-ethyl)hexyl phthalate.