ANTIMONY-FREE PHOTOCURABLE POLYMERIC COMPOSITION AND THREE-DIMENSIONAL ARTICLE Russian patent published in 2011 - IPC C08L63/00 C09D163/00 B29C67/00 B22C7/02 A61L27/14 G09B23/28 A61L29/04 G03F7/38 G03F7/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a photocurable composition for a three-dimensional article containing the following in wt %: (a) a cation-curable component containing an oxetane compound 35-80; (b) a free-radical active component containing poly(meth)acrylate, which is not dipentaerythritol hexaacrylate 15-60; (c) an antimony-free cationic photoinitiator 0.1-10; (d) a free-radical photoinitiator 0.01-10; (e) one or more additives which increase impact resistance 0.01-40. The photocurable composition can be cured under the effect of actinic radiation and optionally heating, which enables to obtain three-dimensional articles which can be used in various aerospace fields and in methods of casting with consumable patterns. Described also is a method of producing a non-toxic photocurable composition by mixing all components and a method of making a three-dimensional article which is free from antimony.

EFFECT: obtaining solid components having sufficient strength, stable resin viscosity, improved impact resistance and elasticity of components.

25 cl, 45 tbl, 85 ex