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:
Jun. 08, 1982
Filed:
Dec. 23, 1980
Applicant:
Inventors:
Elizabeth A Blommers, Newtown Square, PA (US);
David R Warfel, Exton, PA (US);
Alvin R Ingram, West Chester, PA (US);
Assignee:
Atlantic Richfield Company, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; C08F / ; C08F / ;
U.S. Cl.
CPC ...
427222 ; 428407 ; 521148 ; 525258 ; 526209 ; 526293 ; 526346 ; 526347 ; 5263471 ;
Abstract
Coated beads which exhibit anti-lumping properties upon pre-expansion and which are useful in the formation of soft expanded articles are prepared by coating initial polystyrene beads, in suspension, with a coating composition comprising styrene and a macromonomer of styrene and isoprene or styrene and butadiene, the coating compositions added to the suspension as an aqueous emulsion containing a catalyst and a polyoxyethylene ether of nonylphenol or octylphenol as surfactant.