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:
Mar. 27, 1990
Filed:
Sep. 21, 1988
Applicant:
Inventor:
Martin H Tusim, Newark, OH (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08J / ;
U.S. Cl.
CPC ...
521 60 ; 521 56 ; 521 98 ; 521910 ; 264D / ;
Abstract
Expandable and expanded particles are prepared from an alkenyl aromatic polymer and a volatile fluid blowing agent mixture of a first blowing agent of 1,1-difluoro-1-chloroethane; and a second blowing agent selected from normal pentane, isopentane, neopentane or mixtures of the various pentanes.