Pressure-sensitive coated abrasive

Surface oxidation reactions have been carried out on a number of polymers, particularly polyethylene. Surface oxidation techniques include the use of corona discharge, ozone, hydrogen peroxide, nitrous acid, alkaline hypochloride, UV irradiation, oxidizing flame, and chromic acid The reactions lead initially to the formation of hydroperoxides, which catalyze the formation of aldehydes and ketones and finally, acids and esters. Surface oxidation treatment has been used to increase the printabdity of polyethylene and poly(ethylene terephthalate) and to improve the adhesion of polyethylene and polypropylene to polar polymers and that of polytetrafluoroethylene to pressure-sensitive tapes. Surface-oxidized polyethylene, when coated with a thin film of vinylidene chloride, acrylonitrile, and acryhc acid terpolymers becomes impermeable to oxygen and more resistant to grease, oil, abrasion, and high temperatures. The greasy feel of polyethylene has also been removed by surface oxidation. 

Uses Epoxy for adhesives (anaerobic, pressure-sensitive, structural), coatings (floor, glass, metal, optical, wood), electronics, inks, sealants Features Difunctional high reactivity good chem. resist., abrasion resist., adhesion, hardness, water resist. low color Properties Gardner 1 clear liq. vise. 2200 cps 60% oligomer, 40% monomer... 

Uses Epoxy for hard coatings (glass, metal, optical, plastic, PVC floor, paper, wood), electronics, and inks (flexo, gravure, litho, offset, screen), sealants, adhesives (anaerobic, binder, pressure sensitive, structural) Features Offers adhesion chem., abrasion, and water resist. high reactivity... 

Adhesives pressure sensitive, flock, laminate Increased bonding chemical-, chipping-, abrasion-, weather resistance elimination of solvents 100% convertibility of coating highspeed cure flexibility in handling techniques low energy consumption room-temperature cure no limitation on colors Curing, polymerization... 

Moisture, weathering resistant resins (vanishes) Chemical-resistant resins (lining materials, etc.) Abrasion-resistant resins (coating materials) Insulating resins (sealing compounds) Fire-resistant resins (vanishes) Pressure-sensitive adhesive resins Spherical powders (improvers to blocking and sliding properties for films)... 

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