Thermoplastic film having improved outdoor weatherability

Details Thermoplastic film having improved outdoor weatherability Thermoplastic film having improved outdoor weatherability

1978-02-10

1979-02-27

Seccuro, Carman J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 4252, 428463, 428522, C08L 3102

Patent

active

041419359

ABSTRACT:
Improved thermoplastic polymeric compositions prepared in multiple-stage sequentially produced polymerization are provided. The compositions are characterized as polymer particles having an elastomeric crosslinked core sheathed by three increasingly harder thermoplastic copolymer shells. The polymer particles are preferably isolated, dried and converted into film using heat and pressure.

REFERENCES:
patent: 3562235 (1971-02-01), Ryan
patent: 3808180 (1974-04-01), Owens
patent: 3812205 (1974-05-01), Dunkelberger

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