Claims
- 1. An ethylene/propylene/1-butene terpolymer characterized by containing 75.2 to 91.5 mol% propylene, 7.5 to 14.9 mol% ethylene and 1.0 to 9.9 mol% 1-butene, having a melting point based on DSC of 20.degree. to 145.degree. C., a haze value not larger than 40% when pressed to the thickness of 0.5 mm at 190.degree. C. and measured according to JIS K 6714, a Shore C hardness based on JIS of 20 to 80 and a density of 0.86 to 0.91, and containing 0.01% to 5% by weight of boiling n-heptane insoluble portion.
- 2. The terpolymer as defined in claim 1, in which the propylene content, ethylene content and 1-butene content are 77.0 to 86.0 mol%, 8.0 to 14.0 mol% and 9.0 mol%, respectively.
- 3. The terpolymer as defined in claim 1, in which the propylene content, ethylene content and 1-butene content are 77.0 to 83.5 mol%, 10.0 to 14.0 mol% and 6.5 to 9.0 mol%, respectively.
Priority Claims (1)
Number |
Date |
Country |
Kind |
54-112915 |
Sep 1979 |
JPX |
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Parent Case Info
This is a division of application Ser. No. 184,238, filed Sept. 5, 1980, now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (2)
Number |
Date |
Country |
2637991 |
Mar 1978 |
DEX |
1563977 |
Apr 1980 |
GBX |
Non-Patent Literature Citations (1)
Entry |
Translated Abstract of Japanese No. 104687, (1978), No. 791975, (1976). |
Divisions (1)
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Number |
Date |
Country |
Parent |
184238 |
Sep 1980 |
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