B - Operations – Transporting – 29 – B
Patent
B - Operations, Transporting
29
B
18/1167, 18/783,
B29B 9/06 (2006.01) B29C 47/88 (2006.01) B29C 59/04 (2006.01) B32B 27/08 (2006.01) C08L 23/04 (2006.01) C08L 23/10 (2006.01) C08L 23/16 (2006.01) B29C 47/00 (2006.01)
Patent
CA 1267517
ABSTRACT OF THE DISCLOSURE A first polymer can be coated with a second polymer by (1) selected as the second polymer; a polymer which has a crystalline or semicrystalline melting point which is at least 10°C above the melting or softening point of the first polymer, the two polymers being insoluble in one another in the melt state; (2) intimately blending the two polymers; and (3) extruding the blend through a die having an outlet die face which is maintained at a sub- stantially lower temperature than the extruder melt tem- perature. In its preferred embodiment the first polymer is an elastomer and the second polymer comprises at least one crystalline or semicrystalline plastic polymer. A typical composition comprises an EPM or EPDM rubber and a mixture of polyethylene and a crystalline copolymer of ethylene and propylene.
483229
Hazelton Donald R.
Kresge Edward N.
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
Hazelton Donald R.
Kresge Edward N.
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