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. 11, 1988
Filed:
Jul. 25, 1986
Applicant:
Inventors:
Jose M Sosa, Big Spring, TX (US);
Jimmy D Nichols, Port Arthur, TX (US);
Assignee:
Cosden Technology, Inc., Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
525 53 ; 525 51 ; 525316 ;
Abstract
The invention relates to a continuous flow process for producing polystyrene having discrete particles of rubber included therein. The process utilizes a pre-inversion reactor, in which a solution of styrene, polystyrene and rubber are mixed prior to being introduced into a second stirred tank reactor. The viscosity of the solutions in the pre-inversion reactor and in the second stirred tank reactor are closely controlled to produce desirable HIPS products.