Title:
TRANSPARENT POLYAMIDE ELASTOMER
Document Type and Number:
WIPO Patent Application WO/1986/006390
Kind Code:
A1
Abstract:
A polyamide elastomer having the structure of a product of condenasition by dehydration between: (A) polycapramide having a number-average molecular weight of 500 to 5000 and having carboxyl groups at its terminals, which is obtained from a dicarboxylic acid selected from among an aliphatic dicarboxylic acid containing 4 to 20 carbon atoms, an alicyclic dicarboxylic acid, and an aromatic dicarboxylic acid and caprolactam; and (B) polyoxytetramethylene glycol having a number-average molecular weight of 800 to 5000 or modified polyxytetramethylene glycol having units represented by formula (I), (wherein R represents a branched alkylene group having 4 to 20 carbon atoms or a straigth-chain alkylene group having 5 to 20 carbon atoms) in the molecular chain in a content of 50 wt % or less, with the weight ratio of (A) to (B) of 10 : 90 to 60 : 40, which has relative viscosity (o.5 w.v %) of 1.5 or more at 30oC in m-cresol, which has polyamide distribution ratio of 0.7 to 1.3, a Shore hardness of 60A to 50D, a tensile break strength of 150 kg/cm2 or more, and a haze number of 75 % or less at a thickness of 1 mm, and which is suitably used for hose, tube, etc., and a process for its production.
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Inventors:
SUZUKI YOSHIO (JP)
NAKAMURA MIKIHIKO (JP)
AOSHIMA ATSUSHI (JP)
NAKAMURA MIKIHIKO (JP)
AOSHIMA ATSUSHI (JP)
Application Number:
PCT/JP1986/000209
Publication Date:
November 06, 1986
Filing Date:
April 25, 1986
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
C08G69/44; (IPC1-7): C08G69/44
Foreign References:
| JPS58210925A | 1983-12-08 | |||
| US4332920A | 1982-06-01 |
Other References:
See also references of EP 0221188A1
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