Radiation curable resistant coatings and their preparation

Patent · Tue Nov 02 04:00:00 EST 1976

OSTI ID:7326509

Brack, K

A prepolymer containing unsaturated hydrocarbon groups is prepared and mixed on a roller mill with one or more acrylic ester monomers and various additives to make a coating formulation of a desired viscosity. In general, low viscosity formulations are used for overprint varnishes, on paper or foil, or with pigments, for certain types of printing inks. Higher viscosity formulations are used to apply thick films on panels, tiles, or other bodies. Thin films are cured to hardness by brief exposure to ultraviolet light. Thicker films require more energetic radiation such as plasma arc and electron beam radiation. The prepolymers particularly useful for making such radiation curable coatings are the reaction products of polyether polyols and bis- or polyisocyanates and hydroxy alkenes or acrylic (or methacrylic) hydroxy esters, and, likewise, reactive polyamides modified with dicarboxy alkenes, their anhydrides or esters. A small amount of wax incorporated in the coating formulations results in coatings with release characteristics similar to those of PTFE coatings. 10 claims.

• Assignee: Dennison Manufacturing Co.
• Patent Number(s): US 3989609
• OSTI ID: 7326509
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360401* -- Polymers & Plastics-- Preparation & Fabrication-- (-1987)
360406 -- Materials-- Polymers & Plastics-- Radiation Effects-- (-1987)
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600 -- Radiation Chemistry
ACRYLIC ACID ESTERS
BEAMS
CARBOXYLIC ACID ESTERS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
COATINGS
CROSS-LINKING
DIMENSIONS
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ESTERS
FILMS
HYDROCARBONS
LEPTON BEAMS
MONOMERS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARTICLE BEAMS
PLASMA
POLYMERIZATION
PROTECTIVE COATINGS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
THICKNESS
ULTRAVIOLET RADIATION
VISCOSITY
WAXES