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. 24, 1994
Filed:
Nov. 12, 1992
Applicant:
Inventors:
Lisa K Johnson, Mason, OH (US);
Paul E Bowen, Loveland, OH (US);
Thaddeus W Klimek, Orland Park, IL (US);
Michael B Edwards, Minooka, IL (US);
Assignee:
Quantum Chemical Corporation, Cincinnati, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; C08F / ;
U.S. Cl.
CPC ...
428338 ; 428516 ; 428523 ; 525240 ; 525245 ;
Abstract
Tough, puncture- and tear-resistant films having a high degree of flexibility and softness are provided. The monolayer and multilayer films of the invention are obtained using copolymers of propylene with 8 to 40 weight percent ethylene produced by gas phase polymerization of the monomers in dual reactors. The films will have a 1% secant modulus from 5,000 psi to 70,000 psi. Melting points of these films are higher than that of low density polyethylene and, most generally, in the range 125.degree. C. to 160.degree. C.