摘要:
The invention relates to a powder-slurry that can be hardened by actinic radiation or by thermal means, comprising (I) components containing functional groups (A) which render them hardenable by actinic radiation and components containing complementary functional groups (B) which render them thermally hardenable, in a weight ratio of 50:1 to 1:50 and/or comprising (II) components containing the functional groups (A) and (B) which render them thermally hardenable and hardenable by actinic radiation in a molar ratio of 100:1 to 1:100.
摘要:
The invention relates to an intrinsically viscous powder-slurry that can hardened by actinic radiation or optionally by thermal means, which contains solid spherical particles with an average particle size of 0.8 to 20 &mgr;m and a maximum particle size of 30 &mgr;m. The clear powder coating slurry contains 0.05 to 1 meq/g of ion-forming groups and 0.05 to 1 meq/g of neutralizing agents and has a viscosity of (i) 50 to 1000 mPas at a shear rate of 1000 s−1, (ii) 150 to 8000 mPas at a shear rate of 10 s−1, and (iii) from 180 to 12000 mPas at a shear rate of 1 s−1.
摘要:
A mixture and method for preparing a composition curable thermally and with actinic radiation comprising a binder free from carbon-carbon double bonds activatable with actinic radiation, at least one blocked or unblocked polyisocyanate having at least one soft, flexibilizing segment, and at least one unsaturated polyfunctional urethane that is free from isocyanate-reactive functional groups and contains on average per molecule more than four carbon-carbon double bonds activatable with actinic radiation and at least one hardening segment.
摘要:
Powder slurries curable thermally and with actinic radiation and comprising solid and/or highly viscous particles dimensionally stable under storage and application conditions, comprising (A) a binder free of carbon-carbon double bonds activatable with actinic radiation, comprising at least one (meth)acrylate copolymer containing on average per molecule at least one isocyanate-reactive functional group and at least one ion-forming group, (B) at least one blocked and/or part-blocked polyisocyanate, and (C) at least one olefinically unsaturated constituent which is free of isocyanate-reactive functional groups and contains on average per molecule more than four carbon-carbon double bonds activatable with actinic radiation; processes for preparing them, and their use.
摘要:
Novel aqueous dispersion comprising at least one polymer containing on average (i) at least one primary and/or secondary carbamate group, (ii) at least one functional group having at least one bond which may be activated with actinic radiation, and (iii) at least one dispersive ionic functional group; process for preparing it and its use for preparing coating materials, adhesives and sealing compounds which are curable thermally and with actinic radiation, and also novel coating materials, adhesives and sealing compounds consisting of or comprising the novel aqueous dispersion.
摘要:
Composition curable thermally and with actinic radiation (dual-cure composition) comprising A) at least one constituent containing on average per molecule at least one primary or secondary carbamate group and at least one bond which can be activated with actinic radiation and preparable by from polyfunctional compounds containing at least two isocyanate-reactive, acid-reactive or epoxide-reactive functional groups and suitable monoisocyanates, monoacids or monoepoxides or from polyisocyanates, polyacids or polyepoxides and suitable compounds which contain an isocyanate-reactive, acid-reactive or epoxide-reactive functional group; and B) at least one constituent containing on average per molecule at least one carbamate-reactive functional group and also, where appropriate, at least one bond which can be activated with actinic radiation; and its use as adhesive, sealing compound and coating material.
摘要:
A process is disclosed for producing moldings, in which a pigmented coating composition (P) and a free-radically crosslinkable coating composition (K), which after crosslinking to completion produces a transparent coating (KE) are applied to a support sheet, wherein a dried but as yet not completely crosslinked coating (KT) is produced from the coating composition (K), the coated support sheet is shaped and is injection backmolded or foam-backed, and the coating (KT) is cured or aftercured; the crosslinkable coating composition (K) comprising a free-radically crosslinkable component (KK) which contains hydrogen bond forming structural elements.
摘要:
The invention relates to a radiation-curable laminated sheet or film comprising at least one substrate layer and a top layer which comprises a radiation-curable material having a glass transition temperature below 50° C. and having a high double bond density and acid groups, processes for the production thereof and the use thereof.
摘要:
A process for producing moldings, in which a solventborne or aqueous, pigmented coating composition (P) and a free-radically crosslinkable coating composition (K), which after crosslinking to completion produces a transparent coating (KE) are applied to a support sheet, a dried but as yet not completely crosslinked coating (KT) is produced from the coating composition (K), the coated support sheet is shaped and is injection backmolded or foam-backed with a liquid polymeric material, and the coating (KT)—if this has not already taken place—is cured or aftercured; the crosslinkable coating composition (K) comprising a free-radically crosslinkable component (KK) which comprises carbamate and/or biuret and/or allophanate and/or urea and/or amide groups.