A photopolymerizable composition comprises a polymerizable epoxy-containing material, a polymerizable monomer or monomers containing one or more ##STR1## groups wherein R is H or CH 3 , a cationic photoinitiator, a radical-type photoinitiator and an alcohol accelerator.

Hybrid photocure system

An epoxy resin composition is provided which contains carbon dioxide as a cure retardant. The composition comprises an epoxy resin, a curing agent for the epoxy resin, a hydrocarbon diluent and carbon dioxide. It can optionally contain an alcohol. The presence of the carbon dioxide enables preparation of an epoxy resin and curing agent solution which can be stored and transported to the site of application without curing of the resin until after application. The composition is useful, for example, as a corrosion inhibitor for metal surfaces, and is particularly useful for downhole metal equipment at oil and gas drilling sites.

Carbon dioxide treatment of epoxy resin compositions

Compositions and methods of use are presented suitable for use in priming a first plastic surface, such as an automobile bumper facie, for adhesion of a second plastic material thereto, such as an epoxy resin. The compositions comprise an epoxy resin and a priming solvent, where the epoxy resin is derived from the reaction product of a first organic material having a plurality of epoxy-functional groups and a second organic material, the second organic material being the combination of a material having a plurality of amine-functional groups and a material having a plurality of mercaptan-functional groups. The first and second organic materials are initially dissolved or dispersed in their respective organic solvents, the two solvents making up the priming solvent. The priming solvent is adapted to wet and penetrate but not be substantially retained by the first plastic surface where applied thereto. Kits useful in repairing plastic surfaces using the compositions of the invention are also presented.

Universal adhesion promoting composition for plastic repair kit including same, and method of use

Fabric-reinforced adhesive bonding sheet, the adhesive of which is a blend of epoxy resin and a dianiline which soften and melt at 50°-110° C. The bonding sheet is especially useful for making insulated rail joints.

Fabric-reinforced bonding sheet comprising an epoxy resin and dianiline and use thereof to make an insulated rail joint

Low-temperature curing epoxy compositions are described comprising (1) a saturated epoxy resin, (2) a curing amount of certain aliphatic amines and (3) an organic solvent selected from the group consisting of alcohols, glycols, and glycol ethers.

Low-temperature curable saturated epoxy resin compositions

A ROOM TEMPERATURE CURED REACTION PRODUCT OF A RESINOUS EPOXIDE, A POLYFUNCTIONAL ORGANIC SOLID AMINE EFFECTIVE ALONE ONLY AS A HIGH TEMPERATURE CURING AGENT FOR THE RESINOUS EPOXIDE, AND SOLVENT FOR THE CURING AGENT IN SUFFICIENT AMOUNT TO MODIFY THE ACTION OF THE CURING AGENT AND ALLOW ROOM TEMPERATURE CURING TO A CROSSLINKED PRODUCT POSSESSING ADEQUATE PHYSICAL PROPERTIES AND HAVING CHEMICAL RESISTANCE PROPERTIES COMPARABLE TO THAT DEGREE OF CHEMICAL RESISTANCE NORMALLY ASSOCIATED ONLY WITH RESINOUS EPOXIDE-AMINE REACTION PRODUCTS, CURED AT ELEVATED TEMPERATURES.

I Metil

Papers

Chemical resistant epoxy compositions capable of room temperature curing