Claims
- 1. A hexene-1/4-methylpentene- 1 random copolymer composed of 65 to 90% by weight of the following recurring unit (A) and 35 to 10% by weight of the following recurring unit (B) and having a polystyrene-reduced number average molecular weight of 20,000 to 500,00: ##STR2## wherein said copolymer has a maximum value of the endothermic peak determined by a differential scanning calorimeter ranging from -35.degree. C. to -20.degree. C.
- 2. A hexane-1/4-methylpentene-1 random copolymer composed of 65 to 90% by weight of the following recurring unit (A) and 35 to 10% by weight of the following recurring unit (B) and having a polystyrene-reduced number average molecular weight of 20,000 to 500,000: ##STR3## wherein said copolymer has a maximum value of the endothermic peak determined by a differential scanning calorimeter ranging from -28.degree. C. to -20.degree. C.
Priority Claims (1)
| Number |
Date |
Country |
Kind |
| 61-295765 |
Dec 1986 |
JPX |
|
BACKGROUND OF THE INVENTION
This application is a continuation of application Ser. No. 130,621, filed on Dec. 9, 1987, now abandoned.
1. Field of the Invention
This invention relates to a novel hexene-1/4-methylpentene-1 random copolymer, and more particularly, to a novel hexene-1/4-methylpentene-1 random copolymer having a hexene-1 content of 65 to 90% by weight which is useful in applications as rubber vibration insulators such as vibration dampers and the like; modifiers for plastics and rubbers; adhesives; etc.
2. Description of Prior Art
In applications as rubber vibration insulators, particularly fields requiring damping properties, butyl rubber has heretofore been used which is excellent in vibration-damping capacity. However, this has not been perfect for insulating vibration.
An object of this invention is to provide a novel copolymer having superior in vibration-damping capacity to butyl rubber.
Other objects and advantages of this invention will become apparent from following description.
According to this invention, there is provided a hexene-1/4-methylpentene-1 random copolymer composed of 65 to 90% by weight of the following recurring unit (A) and 35 to 10% by weight of the following recurring unit (B) and having a polystyrene-reduced number average molecular weight of 20,000 to 500,000: ##STR1##
US Referenced Citations (5)
Foreign Referenced Citations (1)
| Number |
Date |
Country |
| 963270 |
Jul 1964 |
GBX |
Continuations (1)
|
Number |
Date |
Country |
| Parent |
130621 |
Dec 1987 |
|
Patent Grant
4990585
