Plastic and nonmetallic article shaping or treating: processes – Stereolithographic shaping from liquid precursor
Patent
1998-07-14
2000-08-08
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
Stereolithographic shaping from liquid precursor
B29C 3508, B29C 4102
Patent
active
060997877
ABSTRACT:
The present invention relates to a process for the production of three-dimensional articles by stereolithography using a radiation-curable composition having at least one cationically polymerizable compound and/or at least one free radical polymerizable compound, at least one filler material and at least one photoinitiator for cationic and/or radical polymerization. An organic viscosity stabilizer material is brought into contact with the composition to substantially delay or prevent undesirable viscosity increase and subsequently premature polymerization. A filler material is added to the composition in an effective amount to at least delay or prevent a significant increase in viscosity and polymerization.
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Hanna Stephen D.
Melisaris Anastasios P.
Pang Thomas H.
Ciba Specialty Chemicals Corp.
Crichton David R.
Tentoni Leo B.
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