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:
Feb. 27, 1979
Filed:
Feb. 10, 1978
Applicant:
Inventor:
David L Dunkelberger, Newtown, PA (US);
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
260885 ; 260 4252 ; 428463 ; 428522 ;
Abstract
Improved thermoplastic polymeric compositions prepared in multiple-stage sequentially produced polymerization are provided. The compositions are characterized as polymer particles having an elastomeric crosslinked core sheathed by three increasingly harder thermoplastic copolymer shells. The polymer particles are preferably isolated, dried and converted into film using heat and pressure.