G - Physics – 03 – F
Patent
G - Physics
03
F
G03F 7/027 (2006.01) G03F 5/24 (2006.01) G03F 7/00 (2006.01) G03F 7/031 (2006.01)
Patent
CA 2063982
A liquid photosensitive composition comprising (1) 40 to 80 % by weight of a urethane (meth)acrylate having a functionality of 2 to 4 and a molecular weight (Mw) of 500 to 10 000, (2) 5 to 40 % by weight of a hydroxyl group containing aliphatic or cycloaliphatic di(meth)acrylate, (3) 0 to 40 % by weight of a mono(meth)acrylate or of a mono-N-vinyl compound having a Mw of not more than 500, (4) 0.1 to 10 % by weight of a photoinitiator, (5) 0 to 30 % by weight of an aliphatic or cycloaliphatic: di(meth)acrylate which differs from (2), of an aliphatic tri(meth)acrylate or of an aromatic di- or tri(meth)acrylate, and (6) 0 to 5 % by weight of customary additives, such that the proportion of components (1) to (6) together is 100 % by weight. The composition is a photosensitive composition which can be polymerised by irradiation with actinic light and which is suitable for the production preferably.of three-dimensional objects by the stereolithographic technique.
Hunziker Max
Schulthess Adrian
Steinmann Bettina
Wiesendanger Rolf
Fetherstonhaugh & Co.
Vantico Ag
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