Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1977-09-21
1980-08-19
Smith, John D.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
20415914, 20415915, 20415918, 20415919, 20415922, 20415923, 260 28R, 427 36, 427 44, 427 54, 427154, 427156, 428 35, 428413, 428416, 428447, 428458, 4284744, 4284777, 428480, 428488, 525113, 525426, 525440, 525533, C08F 246, B05D 306
Patent
active
042182948
ABSTRACT:
Release coatings are provided by including in a liquid monomer or prepolymer polymerizable by electromagnetic or ionizing radiation a waxy material of limited compatibility therein. Upon application of a film of such material by casting, coating or printing, a thin layer of the waxy material migrates to the surface to provide, after cure, the desired release properties. The thin surface layer of waxy material also tends to exclude oxygen from the film to permit radiant curing in air. Preferably the polymerizable liquid comprises acrylate monomers with or without unsaturated prepolymers co-polymerizable therewith dissolved therein. Novel prepolymers especially useful for providing release films and other radiation curable coatings are described, including the reaction product of polyamides, containing primary and secondary amine groups with unsaturated polybasic carboxylic acids and particular reaction products of polyether triols with toluene diisocyanate, modified with unsaturated monomers. Also described is the inclusion in the polymerizable liquid of a dispersed substantially linear polymer as shrink control and re-inforcing agent.
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"Sandoray 1000.RTM. " Manufacturer's Publication Reference No. 6-161/76, Sandoz Color & Chemicals, East Hanover, New Jersey.
Design Cote Corp.
Kersey George E.
Page Thurman K.
Smith John D.
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