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:
May. 01, 1984
Filed:
Jul. 22, 1983
Applicant:
Inventor:
Richard A Schwarz, Big Spring, TX (US);
Assignee:
Cosden Technology, Inc., Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; C08J / ;
U.S. Cl.
CPC ...
428407 ; 521 57 ; 521 93 ;
Abstract
A composition and process for reducing the adhesion of expandable polystyrene beads impregnated with a blowing agent such as pentane. The composition comprises effective amounts of magnesium stearate and zinc stearate respectively. The composition is added to the polystyrene in an apparatus such as a tumble blender prior to pre-expansion of the impregnated polystyrene beads.