High clarity, low friction polyethylene compositions for films

Details High clarity, low friction polyethylene compositions for films High clarity, low friction polyethylene compositions for films

2007-09-04

2007-09-04

Seidleck, James J. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S191000, C525S210000, C525S211000, C525S242000

Reexamination Certificate

active

10978541

ABSTRACT:
A melt-blended polyethylene/COP composition suitable for making optically clear films with low coefficients of friction includes from about 70 to about 98 weight percent of a polyethylene resin and from about 2 to about 25 weight percent of a first COP resin component, the first COP resin component having a weight average molecular weight of from about 0.5 kg/mol to about 50 kg/mol and being present in an amount effective to increase the relative slip value of films made from the composition as compared with a like film made from the polyethylene resin alone.

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Cyclic-olefinic Copolymers as Non-Migrating, Polymeric Slip Additives in LDPE and LLDPE Cast Films by David R. Constant of Ticona LLC 2002 PLACE Conference Proceedings (Conference Papers); Kirk-Othmer, Encyclopedia of Chemical Technology, Fourth Edition (1993), vol. 11, pp. 843-844; and Kirk-Othmer, Encyclopedia of Chemical Technology, Fourth Edition (1993), vol. 10, pp. 775-778.

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