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. 26, 1992
Filed:
May. 16, 1991
Applicant:
Inventors:
Roger A Grey, West Chester, PA (US);
Laurel E Schock, Paoli, PA (US);
Diandre Armstead, Philadelphia, PA (US);
Assignee:
Arco Chemical Technology, L.P., Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08J / ;
U.S. Cl.
CPC ...
521147 ; 252609 ; 264 41 ; 264 51 ; 264 53 ; 264 54 ; 521 56 ; 521 60 ; 526274 ; 526275 ; 526277 ; 526278 ; 526347 ;
Abstract
A process for making thermoplastic copolymer beads from vinyl aromatic monomers and vinyl phosphonic acid derivatives is disclosed. A process for making foamed articles from the beads is also disclosed. The foamed articles are useful for packaging and construction applications.