公开(公告)号：AU5733690A

公开(公告)日：1990-12-18

申请号：AU5733690

申请日：1990-05-16

Applicant: STAMICARBON

Inventor： RUTTEN HENDRIKUS JOHANNES JOZE

IPC: C08G67/02 ,  C08J5/18 ,  D01F6/04 ,  D01F6/30

Abstract: A process for producing an elongated object of an alternating copolymer of carbon monoxide and an olefinically unsaturated monomer wherein the copolymer has an intrinsic viscosity measured in m-cresol at 100 DEG C. of at least 1 dl/g, involve converting a solution of the copolymer into a solvent-containing object, removing between 90 and 99.9% of the solvent from the solvent-containing object, and stretching the thus obtained object at a temperature below the melting point of the copolymer.

公开(公告)号：BR8603998A

公开(公告)日：1987-04-07

申请号：BR8603998

申请日：1986-08-22

Applicant: STAMICARBON

Inventor： SCHELLEKENS RONALD MICHAEL ALE ,  RUTTEN HENDRIKUS JOHANNES JOZE ,  LEMSTRA PIETER JAN

IPC: B29C55/00 ,  B29D7/00 ,  C08J5/18 ,  D01D5/00 ,  D01F6/14 ,  C08L29/04

Abstract: High modulus and high strength articles of polyvinyl-­alcohol are obtained by thermoreversible gelation of a 5-50 wt.% solu­tion of a polyvinylalcohol with an M w of 2.5 × 10⁴ to 5 × 10⁵ in water, followed by solvent removal and high stretching.Pref. gelation is obtained by cooling to a temperature of at least 40 ◊C below the gelation temperature.With this process low costs of solvent removal and regeneration are obtained.