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Title: Radiation curable resistant coatings and their preparation

Abstract

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.

Inventors:
Publication Date:
OSTI Identifier:
7326509
Patent Number(s):
US 3989609
Application Number:
TRN: 77-008131
Assignee:
Dennison Manufacturing Co.
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 24 Sep 1973
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; ACRYLIC ACID ESTERS; CHEMICAL RADIATION EFFECTS; CROSS-LINKING; HYDROCARBONS; PROTECTIVE COATINGS; ELECTRON BEAMS; FILMS; MONOMERS; PLASMA; POLYMERIZATION; THICKNESS; ULTRAVIOLET RADIATION; VISCOSITY; WAXES; BEAMS; CARBOXYLIC ACID ESTERS; CHEMICAL REACTIONS; CHEMISTRY; COATINGS; DIMENSIONS; ELECTROMAGNETIC RADIATION; ESTERS; LEPTON BEAMS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; PARTICLE BEAMS; RADIATION CHEMISTRY; RADIATION EFFECTS; RADIATIONS; 360401* - Polymers & Plastics- Preparation & Fabrication- (-1987); 360406 - Materials- Polymers & Plastics- Radiation Effects- (-1987); 400600 - Radiation Chemistry

Citation Formats

Brack, K. Radiation curable resistant coatings and their preparation. United States: N. p., 1976. Web.
Brack, K. Radiation curable resistant coatings and their preparation. United States.
Brack, K. Tue . "Radiation curable resistant coatings and their preparation". United States.
@article{osti_7326509,
title = {Radiation curable resistant coatings and their preparation},
author = {Brack, K},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {11}
}