The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2000
Filed:
Apr. 06, 1998
Thomas H Pang, Castaic, CA (US);
Anastasios P Melisaris, Stevenson Ranch, CA (US);
Wang Renyi, Alhambra, CA (US);
John W Fong, Los Angeles, CA (US);
Ciba Specialty Chemicals Corp., Tarrytown, NY (US);
Abstract
The present invention relates to novel resin compositions containing at least one solid or liquid actinic radiation-curable and cationically polymerizable organic substance, an actinic radiation-sensitive initiator for cationic polymerization, an actinic radiation-curable and radical-polymerizable organic substance and an actinic radiation-sensitive initiator for radical polymerization. The actinic radiation-curable and cationically polymerizable organic substance is at least one glycidylether of a polyhydric aliphatic, alicyclic or aromatic alcohol having at least three epoxy groups with epoxy equivalent weight between 90 and 800 grams per equivalent, at least one solid or liquid alicyclic epoxide with an epoxy equivalent weight between 90 and 330 grams per equivalent having at least two epoxy groups and monomer purity greater than about 90% by weight, or at least a solid or liquid epoxycresol novolac or epoxyphenol novolac having epoxy equivalent weight between 130 and 350, or mixtures thereof. The use of the above-mentioned cationically polymerizable components substantially increases the heat deflection temperature of the cured articles while maintaining high photospeed, accuracy, wetting-recoatability, water resistance and good side wall finish. The present invention further relates to a method of producing a cured product, particularly a three-dimensional article, in which a compositions described above are treated with actinic radiation.