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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 11079678 B1

PDFFull Text
Date of Patent:
Aug. 03, 2021

Filed:

Sep. 11, 2018

Photopolymer composition

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Seok Hoon Jang, Daejeon, KR;

Heon Kim, Daejeon, KR;

Yongjoon Heo, Daejeon, KR;

Se Hyun Kwon, Daejeon, KR;

Yeong Rae Chang, Daejeon, KR;

Assignee:

LG CHEM, LTD., Seoul, KR;

Attorney:

Rothwell, Figg, Ernst & Manbeck, P.C.

Primary Examiner:

Martin J Angebranndt

Int. Cl.
CPC ...
G03H 1/02 (2006.01); G03F 7/004 (2006.01); G03F 7/033 (2006.01); C08K 5/541 (2006.01); C08F 2/50 (2006.01); C08L 33/06 (2006.01); C08L 43/04 (2006.01); G03F 7/075 (2006.01); G03F 7/00 (2006.01);
U.S. Cl.
CPC ...
G03F 7/0758 (2013.01); C08F 2/50 (2013.01); C08K 5/541 (2013.01); C08L 33/06 (2013.01); C08L 43/04 (2013.01); G03F 7/001 (2013.01); G03F 7/0046 (2013.01); G03F 7/033 (2013.01); G03H 1/02 (2013.01); G03H 2001/0216 (2013.01); G03H 2001/0264 (2013.01);
Abstract

A photopolymer composition comprising a polymer matrix or a precursor thereof including a reaction product between (i) a (meth)acrylate-based (co)polymer in which a silane-based functional group is located in a branched chain and an equivalent weight of the silane-based functional group is 300 g/eq to 2000 g/eq, and (ii) a linear silane crosslinking agent; a photoreactive monomer; and a photoinitiator, a hologram recording medium using the same, an optical element using the hologram recording medium, and a holographic recording method. The photopolymer composition can more easily provide a photopolymer layer having improved durability against temperature and humidity while having a large refractive index modulation value.

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