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公开(公告)号:JPS6290308A
公开(公告)日:1987-04-24
申请号:JP19700286
申请日:1986-08-21
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:JPS6290309A
公开(公告)日:1987-04-24
申请号:JP19700386
申请日:1986-08-21
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:JPH04213301A
公开(公告)日:1992-08-04
申请号:JP2258991
申请日:1991-01-24
Applicant: STAMICARBON
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