METHOD FOR IMPROVING IMPACT STRENGTH IN HIGH NITRILE POLYMERS BY STRETCHING AND HEAT SETTING

    公开(公告)号:CA1083318A

    公开(公告)日:1980-08-12

    申请号:CA267171

    申请日:1976-12-06

    Inventor: ISLEY RALPH E

    Abstract: METHOD FOR IMPROVING IMPACT STRENGTH IN HIGH NITRILE POLYMERS BY STRETCHING AND HEAT SETTING High nitrile polymer articles having improved impact strength and dimensional stability are prepared by stretching in more than one direction a solvent-free, thermoformed polymer article having less than 0.5 percent water and then heat setting the oriented article while in a restrained position at orientation temperatures for about 5 seconds to 2.5 minutes.

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