IP Library Granted Patent US 11,118,038
Granted Patent B2
US 11,118,038 · App. 16/337,244 · Granted Sep 14, 2021

Latex composition

Inventors: Masatoshi Ishiba (Tokyo, JP); Takashi Iga (Tokyo, JP); Junji Kodemura (Tokyo, JP)
Assignee: ZEON CORPORATION
C08L9/10C08J5/02C08K5/103C08L21/02C08J2309/10D21H17/35
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Quick Facts
Patent No.
US 11,118,038
App. No.
16/337,244
Granted
Sep 14, 2021
Kind
B2
Abstract

A latex composition containing a conjugated diene polymer latex and a medium-chain fatty acid glyceride, wherein a content proportion of the medium-chain fatty acid glyceride is 1 to 40 parts by weight with respect to 100 parts by weight of the conjugated diene polymer. In the present invention, a medium-chain fatty acid forming the medium-chain fatty acid glyceride is preferably a fatty acid having 6 to 18 carbon atoms. In the present invention, the medium-chain fatty acid glyceride is preferably a medium-chain fatty acid triglyceride. The latex composition preferably further contains a crosslinking agent.

Claims (20)

1. A latex composition comprising:

a conjugated diene polymer latex; and

a fatty acid glyceride of a fatty acid having 6 to 18 carbon atoms, wherein

a content proportion of the fatty acid glyceride is 1 to 40 parts by weight with respect to 100 parts by weight of the conjugated diene polymer, and

the conjugated diene polymer is a synthetic polyisoprene, a styrene-isoprene-styrene block copolymer, or a nitrile group-containing conjugated diene copolymer.

2. The latex composition according to claim 1 , wherein

the fatty acid glyceride is a fatty acid triglyceride.

3. The latex composition according to claim 1 , further comprising

a crosslinking agent.

4. A molded film consisting of the latex composition according to claim 1 .

5. A packaging structure comprising:

a coating film consisting of the latex composition according to claim 1 , the coating film bonding at least a part of a first sheet substrate and at least a part of a second sheet substrate to form a laminate, the packaging structure being capable of containing an article to be packaged between the first sheet substrate and the second sheet substrate.

6. The latex composition according to claim 1 , wherein

the conjugated diene polymer latex comprises water and a conjugated diene polymer.

7. The latex composition according to claim 1 , wherein

the content proportion of the fatty acid glyceride is 1 to 30 parts by weight with respect to 100 parts by weight of the conjugated diene polymer.

8. The latex composition according to claim 1 , wherein

the content proportion of the fatty acid glyceride is 1 to 15 parts by weight with respect to 100 parts by weight of the conjugated diene polymer.

9. The latex composition according to claim 1 , which has a solid content concentration of 15 to 65 wt %.

10. The latex composition according to claim 1 , which has a solid content concentration of 15 to 45 wt %.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 27, 2019
From: ISHIBA, MASATOSHI; IGA, TAKASHI; KODEMURA, JUNJI
To: ZEON CORPORATION
Reel/Frame 048717/0569 →
Priority Claims (1)
JP JP2016-191535 · Sep 29, 2016 · national
Continuity (1)
Related Publication 20190300685A1 · Oct 3, 2019