Exxon Chemical Patents, Inc.

Exxonmobil Chemical Patents Inc.

Exxon Chemical Company

Marsha M Arvedson

Paul M German, Jr

Patrick Brant

Joseph Dominic Domine

Abhimanyu Onkar Patil

Lisa Saunders Baugh

Karla Schall Colle

Kevin Richard Squire

Beverly Jean Poole

Alan Joseph Oshinski

Christian Peter Mehnert

Kevin D Robinson

Gerhardt E Wissler

John E Wydila

A polymer composition comprises (a) least 40 wt % (based upon the weight of the composition) of a cyclic olefin polymer comprising at least one acyclic olefin and at least 20 wt % of one or more cyclic olefins (based upon the weight of the cyclic olefin polymer), wherein at least a portion of the cyclic olefin polymer has a glass transition temperature of greater than 100&#xb0; C.; (b) an acyclic olefin polymer modifier in an amount up to 40 wt % (based upon the weight of the composition); and (c) at least 10 wt % (based upon the weight of the composition) of one of more fillers. The polymer composition has a notched Izod impact resistance measured at 23&#xb0; C. of greater than 100 J/m and a flexural modulus (1% secant method) of greater than 1400 MPa.

Polymer compositions comprising cyclic olefin polymers, polyolefin modifiers, and fillers

A method to produce a stretch cling film possessing cling without added tackifier or acrylate unit is disclosed. Preferred copolymers to make this film have a solubility distribution breadth index of less than about 35.degree. C. and are ethylene/C.sub.3-20 alpha olefin copolymers with greater than about 4 to about 20 mole percent comonomer content.

Cling film

A thermoplastic film is provided which is especially suited for use in stretch/cling applications such as, for example, the bundling, packaging and unitizing of foods and other goods. The film comprises a cling layer comprising a polymer of at least ethylene and 2-40 wt % acrylate having a ratio of M.sub.w /M.sub.n less than about 3.5, a ratio of M.sub.z /M.sub.w less than about 3, a melt index of about 0.1-30 dg/min, and a melt index swell ratio less than about 1.6, preferably without a tackifying additive. The film may further comprise a non-cling layer comprising a thermoplastic preferably essentially free of anticling (slip and/or antiblock) additive. Preferred thermoplastic materials include polyethylene and polypropylene.

Narrow molecular weight distribution ethylene-acrylate cling layer in

Low creep polypropylene textiles are disclosed which comprise a blend of isotactic polypropylene with 10-30 weight percent of a resin obtained by hydrogenating polymerized olefinically unsaturated monomers derived from petroleum cracking, e.g., polydicyclopentadiene. The hydrocarbon resin has a weight average molecular weight of from 500 to 1000 and a glass transition temperature of from 40.degree. C. to 90.degree. C. The blend exhibits creep resistance at ambient temperatures and has a glass transition temperature greater than 20.degree. C. The textile blend is useful in carpet, drapery and other applications wherein creep resistance and resiliency are desirable.

Low creep polypropylene textiles

A thermoplastic film is provided which is especially suited for use in stretch/cling applications such as, for example, the bundling, packaging and unitizing of foods and other goods. The film comprises a cling layer comprising (i) a non-cling polymer of at least ethylene and acrylate or vinyl acetate, blended with (ii) a compatible, non-migratory tackifier. The film may further comprise a non-cling layer comprising a polyolefin essentially free of tackifier, with or without an anticling (slip and/or antiblock) additive. Preferred polyolefins include linear low density polyethylene and polypropylene.

Low comonomer content ethylene-acrylate polymers in stretch/cling films

The present invention is directed to a cling packaging film for use in wrapping food products, particularly fresh meat and produce. The film comprises a core layer containing a copolymer of ethylene and an ethylenically unsaturated polar comonomer together with an elastomeric polymer. The film further comprises a skin layer containing linear low density polyethylene. Both the core and skin layers may contain additional components. A film in accord with the present invention compares favorably with PVC food wrap film and is intended to provide a replacement therefor.

Growing community of inventors

Houston, TX, United States of America

Marsha M Arvedson