Crosslinkable composition and crosslinked product

Patent metadata

Field	Value
Publication number	US-11535696-B2
Application number	US-201716342933-A
Country	US
Kind code	B2
Filing date	Oct 25, 2017
Priority date	Oct 31, 2016
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

A crosslinkable composition containing: a liquid monocyclic olefin ring-opened polymer (A) having a reactive group at a polymer chain end thereof and a weight-average molecular weight (Mw) of 1,000 to 50,000; and a crosslinkable compound (B) having, in the molecule, two or more functional groups reactive with the reactive group at the polymer chain end of the monocyclic olefin ring-opened polymer (A).

First claim

The invention claimed is:

1. A crosslinkable composition comprising:
a liquid monocyclic olefin ring-opened polymer (A) having a reactive group at a polymer chain end thereof and a weight-average molecular weight (Mw) of 1,000 to 50,000; and
a crosslinkable compound (B) having, in the molecule, two or more functional groups reactive with the reactive group at the polymer chain end of the monocyclic olefin ring-opened polymer (A), wherein
the liquid monocylic olefin ring-opened polymer (A) is a copolymer containing a structural unit derived from cyclopentene and a structural unit derived from a monomer copolymerizable with cyclopentene as repeating structural units and having the reactive group at the polymer chain end thereof, the monomer copolymerizable with cyclopentene being a monocyclic diolefin, a polycyclic monoolefin, or a polycyclic diene,
the liquid monocyclic olefin ring-opened polymer (A) contains, as repeating structural units, a structural unit derived from cyclopentene at a ratio of 70 mol % or more based on all repeating units,
the reactive group at the polymer chain end of the monocyclic olefin ring-opened polymer (A) is a hydroxyl group or a hydroxycarbonyl group; and
the functional group of the crosslinkable compound (B) is an isocyanate group, an epoxy group, or an amino group.

2. The crosslinkable composition according to claim 1 , wherein the monocyclic olefin ring-opened polymer (A) has a melt viscosity of 3,000 Pa·s or less as measured at a temperature of 25° C. using a Brookfield viscometer.

3. The crosslinkable composition according to claim 1 , wherein the monocyclic olefin ring-opened polymer (A) has a glass transition temperature of −50° C. or less.

4. The crosslinkable composition according to claim 1 , wherein the monomer copolymerizable with cyclopentene is 1,5-cyclooctadiene, 2-norbornene, or dicyclopentadiene.

5. The crosslinkable composition according to claim 1 , wherein said ratio is 75 mol % or more.

6. The crosslinkable composition according to claim 1 , wherein said ratio is 80 mol % or more.

7. The crosslinkable composition according to claim 1 , wherein said weight-average molecular weight (Mw) is 1,500 to 45,000.

8. The crosslinkable composition according to claim 1 , wherein said weight-average molecular weight (Mw) is 2,000 to 40,000.

9. The crosslinkable composition according to claim 2 , wherein said melt viscosity is 2,000 Pa·s or less as measured at a temperature of 25° C. using a Brookfield viscometer.

10. The crosslinkable composition according to claim 2 , wherein said melt viscosity is 1,000 Pa·s or less as measured at a temperature of 25° C. using a Brookfield viscometer.

11. The crosslinkable composition according to claim 2 , wherein said melt viscosity is 300 Pa·s or less as measured at a temperature of 25° C. using a Brookfield viscometer.

12. The crosslinkable composition according to claim 3 , wherein said glass transition temperature is −60° C. or less.

13. The crosslinkable composition according to claim 3 , wherein said glass transition temperature is −70° C. or less.

Assignees

• Zeon Corp

Inventors

• Tsunogae Yasuo
• Okuno Shingo
• NITADORI Hiroyuki

Classifications

• C08G61/08

  of carbocyclic compounds containing one or more carbon-to-carbon double bonds in the ring · CPC title

• C08G18/6204

  Polymers of olefins (unsaturated polymers of conjugated dienes C08G18/69) · CPC title

• C08L65/00

  Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain (C08L7/00 - C08L57/00, C08L61/00 take precedence); Compositions of derivatives of such polymers · CPC title

• C08G2261/63

  Viscosity · CPC title

• C08G59/62

  Alcohols or phenols · CPC title