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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.:

US 11027473 B1

PDFFull Text
Date of Patent:
Jun. 08, 2021

Filed:

Dec. 05, 2018

Multilayered article comprising polypropylene impact copolymers, and method of making same

Applicant:

Braskem America, Inc., Philadelphia, PA (US);

Inventors:

Peter Simon Dias, Malvern, PA (US);

Debra R. Wilson, Houston, TX (US);

Assignee:

Braskem America, Inc., Philadelphia, PA (US);

Attorney:

Duane Morris LLP

Primary Examiner:

James C Yager

Int. Cl.
CPC ...
B29C 48/21 (2019.01); B32B 27/30 (2006.01); C08L 23/14 (2006.01); C08J 5/00 (2006.01); C08J 5/18 (2006.01); B32B 27/08 (2006.01); B32B 1/02 (2006.01); B32B 27/32 (2006.01); C08F 210/06 (2006.01); C08L 23/12 (2006.01); B29K 105/00 (2006.01); B29C 49/02 (2006.01); B29C 49/22 (2006.01); B29K 23/00 (2006.01);
U.S. Cl.
CPC ...
B29C 48/21 (2019.02); B32B 1/02 (2013.01); B32B 27/08 (2013.01); B32B 27/30 (2013.01); B32B 27/32 (2013.01); C08F 210/06 (2013.01); C08J 5/00 (2013.01); C08J 5/18 (2013.01); C08L 23/12 (2013.01); C08L 23/14 (2013.01); C08L 23/142 (2013.01); B29C 49/02 (2013.01); B29C 49/22 (2013.01); B29C 2049/028 (2013.01); B29K 2023/12 (2013.01); B29K 2105/258 (2013.01); B29K 2995/0026 (2013.01); B32B 2250/03 (2013.01); B32B 2250/242 (2013.01); B32B 2270/00 (2013.01); B32B 2307/412 (2013.01); B32B 2307/558 (2013.01); B32B 2439/02 (2013.01); C08J 2323/12 (2013.01); C08J 2323/14 (2013.01); C08J 2423/08 (2013.01); C08L 2203/10 (2013.01); C08L 2205/025 (2013.01); C08L 2207/02 (2013.01); Y10T 428/13 (2015.01); Y10T 428/1352 (2015.01);
Abstract

A polymer sheet includes a core layer containing a propylene impact copolymer (ICP), and a first additional layer comprising a first polymer composition. The propylene impact copolymer (ICP) in the core layer includes a matrix and a dispersed phase. The matrix comprises a polypropylene homopolymer or a propylene/alpha-olefin random copolymer which includes greater than 50 wt. % of units derived from propylene monomer. The dispersed phase includes a copolymer of ethylene and a C-Cα-olefin. The ICP has a first melting point being greater than 100° C. (e.g., in the range of from 100° C. to 130° C.) and a second melting point. The polymer sheet can also include a second additional layer containing a second polymer composition.

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