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公开(公告)号：IN167843B
公开(公告)日：1990-12-29
申请号：IN629MA1986
申请日：1986-08-05
Applicant: STAMICARBON
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.
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公开(公告)号：ZA903808B
公开(公告)日：1991-10-30
申请号：ZA903808
申请日：1990-05-17
Applicant: STAMICARBON
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.
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公开(公告)号：ZA9003808B
公开(公告)日：1991-10-30
申请号：ZA9003808
申请日：1990-05-17
Applicant: STAMICARBON
CPC classification number: C08J5/18 , C08G67/02 , C08J2323/02 , D01F6/30
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