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:
Nov. 09, 1976
Filed:
May. 20, 1974
Applicant:
Inventors:
Antonio Alvares, Mantova, IT;
Gianfranco Biglione, Mantova, IT;
Assignee:
Montedison S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260874 ; 428407 ;
Abstract
Expandable thermoplastic polymeric compositions based on styrene polymers and copolymers in the form of fine particles are disclosed. The particulate compositions essentially consist of (a) styrene polymers containing one or more expanding agents; (b) a polyether derived from propylene oxide and, optionally also from ethylene oxide, and containing polyhydroxy compounds, the polyether being homogeneously dispersed on the surface and preferably also within the expandable particles and (c) optionally, in combination with powdered inorganic and/or organic substances which are homogeneously dispersed on the surface of the polymer particles.