Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive...
Patent
1998-04-06
2000-08-08
Hamilton, Cynthia
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
264401, 4302801, G03C 500
Patent
active
061000078
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.
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Product Information for Dupont Somos.RTM. Solid Imaging Materials, (Mar. 30, 1998 date on Web Page Copy presented), 12 pages.
CAS 128:174150, English Abstract of Steinmann et al, EP 822445 and CA 2211628, Earliest date of publication Jan. 29, 1998, American Chemical Society, 1999.
Derwent 1998-103049, English Abstract of Steinmann et al, EP 822445 and CA 2211628, earliest date of publication Jan. 29, 1998, Derwent Information Ltd., 1999.
Fong John W.
Melisaris Anastasios P.
Pang Thomas H.
Renyi Wang
Ciba Specialty Chemicals Corp.
Crichton David R.
Hamilton Cynthia
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