Chloroprene rubber composition, vulcanized molded article, and anti-vibration rubber
US-2017292014-A1 · Oct 12, 2017 · US
Chloroprene/unsaturated nitrile copolymer composition and vulcanized molded object
US11965078B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11965078-B2 |
| Application number | US-201917291367-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 6, 2019 |
| Priority date | Nov 8, 2018 |
| Publication date | Apr 23, 2024 |
| Grant date | Apr 23, 2024 |
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Abstract
Official abstract text for this publication.
A chloroprene-unsaturated nitrile copolymer composition containing 100 parts by mass of a chloroprene-unsaturated nitrile copolymer having 3 to 20% by mass of a structural unit derived from an unsaturated nitrile monomer, and 0.05 to 2.0 parts by mass of a xanthogen compound.
First claim
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The invention claimed is: 1. A chloroprene-unsaturated nitrile copolymer composition comprising 100 parts by mass of a chloroprene-unsaturated nitrile copolymer comprising 3 to 20% by mass of a structural unit derived from an unsaturated nitrile monomer, 0.05 to 2.0 parts by mass of a xanthogen compound comprising diisopropylxanthogen disulfide, and more than 0.75 part by mass of a sulfur-based vulcanization accelerator comprising 3-methylthiazolidine-2-thione. 2. The chloroprene-unsaturated nitrile copolymer composition according to claim 1 , wherein a content of the sulfur-based vulcanization accelerator is more than 0.75 part by mass and 5 parts by mass or less with respect to 100 parts by mass of the chloroprene-unsaturated nitrile copolymer. 3. The chloroprene-unsaturated nitrile copolymer composition according to claim 1 , wherein the sulfur-based vulcanization accelerator further comprises 1,1,3-trimethyl thiourea and/or ethylene thiourea. 4. A vulcanized molded article of the chloroprene-unsaturated nitrile copolymer composition according to claim 1 . 5. A vulcanizate of the chloroprene-unsaturated nitrile copolymer composition according to claim 1 . 6. The chloroprene-unsaturated nitrile copolymer composition according to claim 1 , wherein the chloroprene-unsaturated nitrile copolymer comprises a structural unit derived from acrylonitrile. 7. The chloroprene-unsaturated nitrile copolymer composition according to claim 1 , wherein the chloroprene-unsaturated nitrile copolymer comprises 9 to 17% by mass of the structural unit derived from an unsaturated nitrile monomer. 8. The chloroprene-unsaturated nitrile copolymer composition according to claim 1 , wherein an amount of a structural unit derived from a chloroprene monomer is 83 to 91% by mass on the basis of the total amount of the chloroprene-unsaturated nitrile copolymer. 9. The chloroprene-unsaturated nitrile copolymer composition according to claim 1 , wherein the xanthogen compound further comprises diethylxanthogen disulfide. 10. The chloroprene-unsaturated nitrile copolymer composition according to claim 1 , wherein a content of the xanthogen compound is 0.1 to 2.0 parts by mass with respect to 100 parts by mass of the chloroprene-unsaturated nitrile copolymer. 11. The chloroprene-unsaturated nitrile copolymer composition according to claim 1 , wherein a content of the xanthogen compound is 0.3 to 1.0 part by mass with respect to 100 parts by mass of the chloroprene-unsaturated nitrile copolymer. 12. The chloroprene-unsaturated nitrile copolymer composition according to claim 1 , wherein the sulfur-based vulcanization accelerator comprises 1,1,3-trimethyl thiourea. 13. The chloroprene-unsaturated nitrile copolymer composition according to claim 1 , wherein the sulfur-based vulcanization accelerator comprises ethylene thiourea. 14. The chloroprene-unsaturated nitrile copolymer composition according to claim 1 , wherein a content of the sulfur-based vulcanization accelerator is more than 0.75 part by mass and 3.0 parts by mass or less with respect to 100 parts by mass of the chloroprene-unsaturated nitrile copolymer. 15. The chloroprene-unsaturated nitrile copolymer composition according to claim 1 , wherein a content of the sulfur-based vulcanization accelerator is 1.0 to 2.0 parts by mass with respect to 100 parts by mass of the chloroprene-unsaturated nitrile copolymer. 16. The chloroprene-unsaturated nitrile copolymer composition according to claim 1 , comprising 100 parts by mass of a chloroprene-unsaturated nitrile copolymer comprising more than 8% by mass and 20% or less of a structural unit derived from an unsaturated nitrile monomer.
Assignees
Inventors
Classifications
- C08K5/38Primary
Thiocarbonic acids; Derivatives thereof, e.g. xanthates {; i.e. compounds containing -X-C(=X)- groups, X being oxygen or sulfur, at least one X being sulfur} · CPC title
with nitriles · CPC title
containing halogen · CPC title
- C08F236/18Primary
containing chlorine · CPC title
with oxygen or nitrogen in the ring · CPC title
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- What does patent US11965078B2 cover?
- A chloroprene-unsaturated nitrile copolymer composition containing 100 parts by mass of a chloroprene-unsaturated nitrile copolymer having 3 to 20% by mass of a structural unit derived from an unsaturated nitrile monomer, and 0.05 to 2.0 parts by mass of a xanthogen compound.
- Who is the assignee on this patent?
- Denka Company Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08K5/38. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 23 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).