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公开(公告)号：EP0968059B2
公开(公告)日：2009-06-10
申请号：EP98913682.5
申请日：1998-03-06
IPC分类号： B05D3/06 , B05D7/16 , C09D5/00 , C09D201/02
CPC分类号： B05D7/536 , B05D3/065 , B05D3/068 , C09D201/02
摘要： The invention relates to a method for enameling substrates with a coloring and/or effect-giving base enamel and clear enamel coating. According to said method, a coloring and/or effect-giving base enamel layer from a base enamel coating compound is applied to a substrate and then given a clear lacquer coating using the wet-on-wet technique. The non-hardened clear enamel layer is exposed to high-energy radiation before being baked with the base enamel coating. The clear enamel coating compound used is one with a resin solid comprising 50 to 98 weight per cent of system A, which can be cured thermally by addition and/or condensation reactions and which is essentially free from radically polymerizable double bonds and essentially free from groups which also react with radically polymerizable double bonds of system B, and 2 to 50 weight per cent of system B, which can be cured by radical polymerization of olefinic double bonds during exposure to high-energy radiation. The weight per cent values total 100 weight per cent and the C=C equivalent weight of the total resin solid of A and B is between 300 and 1000.
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2.发明公开
公开(公告)号：EP1227895A2
公开(公告)日：2002-08-07
申请号：EP00969302.9
申请日：2000-09-26
发明人： BRANDT, Lutz , FLOSBACH, Carmen , FRIGGE, Eva , KRUMPOLT, Frank-Jürgen , KURZ, Christine , MAAG, Karin , MATTEN, Stefanie , REKOWSKI, Volker
CPC分类号： B05D7/53 , C08G18/3206 , C08G18/672 , C08G18/673 , C08G18/7831 , C09D175/16
摘要： The invention relates to a method for producing a base varnish/clear varnish-two-coat varnish and/or a transparent sealing layer on the outer covering layer of a varnished surface of a substrate by applying a transparent, covering agent which can be hardened by radical polymerization and can also be hardened by exposing said agent to energy rich radiation. A transparent covering agent is used whose hard resin body comprises: I. 70 to 100 weight % of olefinic groups which can undergo radical polymerization and contain oligo- and/or prepolymers and II. 0 to 30 weight % of olefinic groups which can be polymerized and contain reactive diluents having a respective calculated molar mass of less than 500. The components I comprise from 75 to 100 weight % of an aliphatic urethane(meth)acrylate with a (meth)acryloyl functionality of on average 3 to 4.5 per molecule and a calculated molecular mass of at least 826. Said components are formed by conversion of acyclic aliphatic diisocyanates with 8 C-atoms and/or polyisocyanates derived from such diisocyanates comprising low molecular weight aliphatic compounds which have one or more hydroxyl groups in addition to one or more (meth)acryloyl groups.
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公开(公告)号：EP0968059B1
公开(公告)日：2004-09-29
申请号：EP98913682.5
申请日：1998-03-06
IPC分类号： B05D3/06 , B05D7/16 , C09D5/00 , C09D201/02
CPC分类号： B05D7/536 , B05D3/065 , B05D3/068 , C09D201/02
摘要： The invention relates to a method for enameling substrates with a coloring and/or effect-giving base enamel and clear enamel coating. According to said method, a coloring and/or effect-giving base enamel layer from a base enamel coating compound is applied to a substrate and then given a clear lacquer coating using the wet-on-wet technique. The non-hardened clear enamel layer is exposed to high-energy radiation before being baked with the base enamel coating. The clear enamel coating compound used is one with a resin solid comprising 50 to 98 weight per cent of system A, which can be cured thermally by addition and/or condensation reactions and which is essentially free from radically polymerizable double bonds and essentially free from groups which also react with radically polymerizable double bonds of system B, and 2 to 50 weight per cent of system B, which can be cured by radical polymerization of olefinic double bonds during exposure to high-energy radiation. The weight per cent values total 100 weight per cent and the C=C equivalent weight of the total resin solid of A and B is between 300 and 1000.
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4.发明授权
公开(公告)号：EP0991727B1
公开(公告)日：2004-02-11
申请号：EP99920774.9
申请日：1999-04-22
发明人： FLOSBACH, Carmen , LÖFFLER, Helmut , MAAG, Karin
IPC分类号： C09D4/00 , C09D4/06 , C09D175/14 , C08F290/14 , C08F290/06 , C08F220/26
CPC分类号： C09D175/16 , C09D4/06 , C09D167/07 , C08F290/00 , C08L2666/02
摘要： The invention relates to radiation-curable coatings containing A) one or more compounds which present free-radical polymerisable double bonds and in addition contain at least one more functional group which is reactive in the sense of an addition and/or condensation reaction; B) one or more compounds which present free-radical polymerisable double bonds and in addition have at least one first functional group which is reactive in the sense of an addition and/or condensation reaction and complementary or reactive in relation to the additional reactive functional groups of component A; C) possibly at least one monomer, oligomer and/or polymer compound with at least one functional group which is reactive, in the sense of an addition and/or condensation reaction, with the functional groups present in addition to the free-radical polymerisable double bonds in component A) or component B); D) one or more photo-initiators and E) possibly solvents, water, pigments and/or fill ers, as well as standard coating additives. Component A) and component B) are different from each other and component C) does not contain any free-radical polymerisable double bonds. The invention also relates to the use of the coatings in a method for producing multilayer coatings, especially for use in vehicle refinishing.
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5.发明授权
公开(公告)号：EP1227895B1
公开(公告)日：2004-11-24
申请号：EP00969302.9
申请日：2000-09-26
发明人： BRANDT, Lutz , FLOSBACH, Carmen , FRIGGE, Eva , KRUMPOLT, Frank-Jürgen , KURZ, Christine , MAAG, Karin , MATTEN, Stefanie , REKOWSKI, Volker
CPC分类号： B05D7/53 , C08G18/3206 , C08G18/672 , C08G18/673 , C08G18/7831 , C09D175/16
摘要： The invention relates to a method for producing a base varnish/clear varnish-two-coat varnish and/or a transparent sealing layer on the outer covering layer of a varnished surface of a substrate by applying a transparent, covering agent which can be hardened by radical polymerization and can also be hardened by exposing said agent to energy rich radiation. A transparent covering agent is used whose hard resin body comprises: I. 70 to 100 weight % of olefinic groups which can undergo radical polymerization and contain oligo- and/or prepolymers and II. 0 to 30 weight % of olefinic groups which can be polymerized and contain reactive diluents having a respective calculated molar mass of less than 500. The components I comprise from 75 to 100 weight % of an aliphatic urethane(meth)acrylate with a (meth)acryloyl functionality of on average 3 to 4.5 per molecule and a calculated molecular mass of at least 826. Said components are formed by conversion of acyclic aliphatic diisocyanates with 8 C-atoms and/or polyisocyanates derived from such diisocyanates comprising low molecular weight aliphatic compounds which have one or more hydroxyl groups in addition to one or more (meth)acryloyl groups.
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