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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 10513596 B1

PDFFull Text
Date of Patent:
Dec. 24, 2019

Filed:

Sep. 20, 2016

Anti-fog compositions and processes for making same

Applicant:

Celanese Acetate Llc, Irving, TX (US);

Inventors:

Kevin Parker, Derby, GB;

Jo Marshall, Lichfield, GB;

Assignee:

CELANESE ACETATE LLC, Irving, TX (US);

Attorney:

Kilpatrick Townsend & Stockton LLP

Primary Examiner:

Frank J Vineis

Assistant Examiner:

Laura B Figg

Int. Cl.
CPC ...
C08K 5/12 (2006.01); B29D 7/01 (2006.01); B29C 39/00 (2006.01); C08K 5/07 (2006.01); C08K 5/11 (2006.01); C08K 5/527 (2006.01); B29C 71/00 (2006.01); C08K 5/521 (2006.01); C08K 3/36 (2006.01); C08K 5/00 (2006.01); B29C 41/12 (2006.01); C08J 5/18 (2006.01); C08J 3/18 (2006.01); B29K 1/00 (2006.01); B29K 105/00 (2006.01); B29L 7/00 (2006.01); B29K 509/08 (2006.01);
U.S. Cl.
CPC ...
C08K 5/12 (2013.01); B29C 39/003 (2013.01); B29C 41/12 (2013.01); B29C 71/0009 (2013.01); B29D 7/01 (2013.01); C08J 3/18 (2013.01); C08J 5/18 (2013.01); C08K 5/07 (2013.01); C08K 5/11 (2013.01); C08K 5/521 (2013.01); C08K 5/527 (2013.01); B29C 2071/0045 (2013.01); B29K 2001/12 (2013.01); B29K 2105/0005 (2013.01); B29K 2105/0038 (2013.01); B29K 2509/08 (2013.01); B29L 2007/008 (2013.01); C08J 2301/12 (2013.01); C08K 3/36 (2013.01); C08K 5/0016 (2013.01);
Abstract

Anti-fog compositions comprising a primary film having opposing major planar surfaces and a central coplanar region disposed between the opposing major planar surfaces and comprising cellulose acetate and a plasticizer. The cellulose acetate may have a degree of substitution less than 2.6. The plasticizer may be selected from the group consisting of 1,2,3-triacetoxypropane (triacetin), tributyl citrate, triethyl citrate, triphenyl phosphate, tris(clorisopropyl)phosphate, dimethyl phthalate, diethyl phthalate, bornan-2-one, PEG-DGE, PPG-DGE, tributyl phosphate, and combinations thereof. The primary film has a thickness greater than 90 microns.

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