Mobil Oil Corporation

Frederick C Schwab

James G Murray

Catherine S Chen

Binnur Z Gunesin

Edward W Sheppard

Israel J Heilweil

Harold S Chung

Krishnaswamy Sampath

John P Guarino

Paul A Pindris

Daniel J Di Biasi

Marjory A Kadash

Ronald J Gustafson

The present invention comprises a method of providing a polymeric based compost bag formed with a relatively high percentage of thermal oxidative degradation catalyst, such as a transition metal salt, and, preferably, a process stabilizer. The stabilizer permits the use of high levels of the thermal oxidative degradation catalyst without the risk of premature accelerated degradation during manufacturing and storing. According to the present invention, the compost bags are packaged in containers which are impervious to gases and vapors thus depriving the pro-oxidant of the oxygen necessary to degrade the polymer. The package may also provide a barrier to the loss of stabilizer during storage. Also disclosed is a kit for the disposal of waste.

Kit providing thermally degradable compost bag

Small effective amounts of camphorquinone incorporated into polyethylene accelerates the degradation of polyethylene on exposure to ultraviolet light.

Photoinitiators as light sensitive degradants for polyethylene

Linear polyethylenes are added to crystal, clear transparent polystyrene to accelerate the degradation of polystyrene on exposure to ultraviolet light.

Polyethylene as UV photodegradant for polystyrene

High molecular weight linear block copolymers containing 5 or more alternating blocks of (A) polymerized styrene or alkyl substituted styrene units, and (B) polymerized conjugated diene units, terminated by (A) units, are prepared by anionic dispersion polymerization to give clear polymers having excellent physical properties.

High impact, highly transparent linear styrene-diene block copolymers

Styrene or other anionically polymerizable monomer is anionically homopolymerized in a dispersion using a non-solvent, e.g., hexane using three or more stages to obtain spherical microparticles, e.g., 2-5 microns, with a narrow size distribution.

Multi-stage anionic dispersion homopolymerization to form microparticles

Polymer surfaces such as polyethylene or polypropylene films are corona discharge treated in the conventional manner, and then treated with a reducing agent such as aqueous KI to convert the surface functional groups containing oxygen to predominantly hydroxyl groups.

Method for treating polymer surfaces by corona discharge and then with

The permeability of a subterranean oil-bearing formation is controlled by the injection of an aqueous solution of a block copolymer containing polar and non-polar segments, with the polar segments generally making up at least 50 percent, usually 60 to 99 percent, of the copolymer. The polar segments are derived from an alkylene oxide and the non-polar segments from styrene or an alkyl styrene either by itself or with a diene. The copolymers may be cross-linked with polyvalent metal ions such as chromium and are normally used in solution concentrations of 1000-10,000 ppm. Diene units in the non-polar segment may be hydrogenated to reduce residual unsaturation and solubilizing functional groups such as sulfonate or hydroxyl may be present to improve water solubility.

Oil reservoir permeability control

High impact graft copolymers made from a rubber backbone and having multiple branches of polymeric methyl ethenyl benzene grafted to the backbone are disclosed in which the methyl ethenyl benzene comprises an isomer mixture high in the para-isomer, e.g., at least 85 weight percent.

High impact graft copolymers of methyl ethenyl benzene on rubber backbone

An adhesive composition comprising a combination of a styrene-butadiene block copolymer, a cyclopentadiene-styrene resin and a random terpolymer of 1,3-pentadiene, a monocyclic terpene, and alpha methylstyrene. A flexible film laminate and product pouchor tube therefrom comprising two or more polymer film layers adhesively bonded together by means of a layer of the defined adhesive.

Adhesive composition, film laminate and product pouch or tube therefrom

A flexible film laminate especially adapted for use in the manufacture of a retortable pouch for the packaging of food is disclosed which comprises:

Flexible film laminate especially adapted for use in the construction of

This invention provides an A-B-A p-methylstyrene-conjugated diene-p-methylstyrene block copolymer containing, by weight of the block copolymer, about 10-40% p-methylstyrene and about 90-60% conjugated diene.

p-Methylstyrene diene block copolymers

A mixture of isomeric methyl ethenyl benzenes having a particular distribution of isomers is useful for preparing polymers with advantageous properties. The isomeric mixture may be polymerized with other monomers to produce copolymers.

Block copolymers

This specification discloses a waterflooding process for producing oil from an oil-containing subterranean formation that is penetrated by an injection well and a production well. An aqueous solution of a water soluble copolymer having segments formed of blocks of an aromatic monomer and blocks of an olefinic monomer chemically modified to have an anionic function on the olefinic segments is injected into the formation to improve the recovery of oil therefrom.

Waterflooding process employing anionic-nonionic copolymer

This specification discloses a waterflooding process for producing oil from an oil-containing subterranean formation penetrated by an injection well and a production well. An aqueous solution of a copolymer formed of hydrophobic olefinic segments and cationic aromatic hydrophilic segments is injected into and driven through the formation in the production of oil therefrom.

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Metuchen, NJ, United States of America

Frederick C Schwab