Polysar Limited

Bexford Limited

John C Kwok

Ivan S Lee

Michel Longuet

Brian H Smith

Adrian Cassola

Keith J Robinson

This invention relates to unsaturated polyester compositions having improved impact resistance and good surface appearance. The compositions contain a novel additive. The novel additive comprises the partially polymerized product of a mixture comprising an elastomer and a styrenic monomer.

Thermoset resin compositions

An adhesive composition comprising a mixture of water based polymer in latex form and a material generally referred to as a thickening agent is disclosed for removably adhering a product to a substrate, for example a carpet with an attached backing to a flooring substrate. The adhesive may be applied as a layer to the carpet backing, dried and subsequently activated with water to adhere the carpet to the floor. After drying, the adhesive layer may be reactivated with water to permit the carpet to be removed from the floor. The adhesive layer when dried on the surface of a latex foam backed carpet provides a non-tacky surface which additionally increases the abrasion resistance of the latex foam backing thereby reducing damage to the backing during normal storage and handling.

Adhesives and uses thereof

Pile carpet having a water activatable adhesive

Vesicular recording materials include a sensitized layer which comprises a polymeric vehicle for the sensitizing agent which is a copolymer of 62 to 95 mole % of acrylonitrile or a derivative thereof with acrylamide or a derivative thereof. Preferred copolymers are derived from acrylonitrile and N-tert.butyl acrylamide or diacetone acrylamide. The sensitized layers may contain a surfactant and may be subjected to water treatment.

Light-sensitive vesicular recording materials and process of using

Recording materials

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Sarnia, Canada

John C Kwok