Title:
ETHYLENE/VINYL ALCOHOL COPOLYMER PRODUCT HAVING HIGH STRENGTH AND MODULUS AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPS63152407
Kind Code:
A
Abstract:
The invention relates to an object and a process for the preparation of an object from an ethylene-vinyl alcohol copolymer with high tensile strength and modulus, by converting: a) a solution of an ethylene-vinyl alcohol copolymer with a weight-average molecular weight above 6 x 10<4> kg/Kmole into a shaped, solvent-containing object in a suitable solvent or mixture of solvents; b) converting this object into a gel object with a homogeneous gelstructure by rapid cooling to below the gelation temperature; c) removing the solvent present in this gel object for the most part d) Drawing the gel object during or after solvent removal at a temperature above the glass transition temperature but below the melting temperature of the copolymer. n
Inventors:
SCHELLEKENS RONALD MICHAEL ALE (NL)
Application Number:
JP29164287A
Publication Date:
June 24, 1988
Filing Date:
November 17, 1987
Export Citation:
Assignee:
STAMICARBON
International Classes:
B29C55/00; C08F16/02; C08F216/06; C08J5/18; C08L29/04; D01D5/00; D01F6/14; D01F6/30; D01F6/34; B29K55/00; (IPC1-7): B29C55/00; B29K55/00; C08F216/06; C08L29/04; D01F6/30; D01F6/34
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)