B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/978
B29C 65/68 (2006.01) B29C 61/00 (2006.01) F16L 13/00 (2006.01) F16L 33/02 (2006.01)
Patent
CA 1237263
HEAT RECOVERABLE POLYMERIC ARTICLES Ramsey/Rowlands/Schott/Siden ABSTRACT Heat recoverable articles prepared from semi- crystalline polymers having a glass transition temperatures, Tg, above about 25°C exhibit unexpectedly high recovery stress under certain conditions. A preferred method of preparing such a heat recoverable article comprises heating the article above its glass transition temperature, Tg, deforming the article while it is above Tg but below the crystalline melting temperature, Tm, and cooling the article to a temperature below Tg while maintaining it in the deformed state.
473729
Ramsey Edward M.
Rowlands Ceinwen D.
Schott Brian E.
Siden Dennis C.
Fetherstonhaugh & Co.
Raychem Corporation
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