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. 16, 1976
Filed:
May. 21, 1974
Hans-Jochen Barth, Emmerting, DT;
Herbert Reinecke, Burghausen, DT;
Georg Hollenbach, Burghausen, DT;
Eduard Kurz, Burghausen, DT;
Wacker Chemie GmbH, Munich, DT;
Abstract
Thermoplastic mixtures suitable for foaming in the extrusion or injection molding process consisting of polymerizate mixtures of (A) from 50 to 95% by weight of a vinyl chloride polymerizate prepared by free-radical polymerization selected from the group consisting of (1) bulk polymerization and (2) emulsion and suspension polymerization with continuous agitation, of vinyl chloride containing up to 20% by weight of ethylenically-unsaturated monomers copolymerizable with vinyl chloride and (B) from 5 to 50% by weight of a vinyl chloride polymerizate prepared by polymerization of a stable, aqueous monomeric dispersion of vinyl chloride containing up to 20% by weight of ethylenically-unsaturated monomers copolymerizable with vinyl chloride prehomogenized in the presence of emulsifiers and oil-soluble catalysts, and a foaming agent.