Abstract:
The present invention relates to novel (meth)acrylic esters of polyalkoxylated trimethylolpropane of the formula where EO is O—CH2-CH2- PO is independently at each instance O—CH2-CH(CH3)- or O—CH(CH3)-CH2- n1, n2 and n3 are independently 4, 5 or 6, n1+n2+n3 is 14, 15 or 16, m1, m2 and m3 are independently 1, 2 or 3, m1+m2+m3 is 4, 5 or 6, R1, R2 and R3 are independently H or CH3, a simplified process for preparing these esters and the use of reaction mixtures thus obtainable.
Abstract:
A radiation-curable composite layered sheet or film comprising at least one substrate layer and one outer layer, said outer layer being composed of a radiation-curable composition having a glass transition temperature of more than 40° C.
Abstract:
A mixture of at least two compounds each having at least two double bonds, said mixture having a WFR from 200 to 600 g/mol of double bond and at least two of said compounds each comprising at least two (meth)acrylic esters as double bond component, WFR being given by: ∑ i = 1 n α i ⨯ MW i / Z i = WFR where ∑ i = 1 n α i = 1 αi is equal to the molar fraction of compound (i) in said mixture, n is equal to the number of compounds in said mixture and n is ≧2, Zi is equal to the number of double bonds in said compound (i), MWi is equal to the molecular weight of said compound (i).
Abstract:
Polymers comprising repeating units of the formula I: where the variables are defined as follows: a is an integer from 0 to 3, R1, R2, R3 are identical or different and are selected independently from among hydrogen, C1-C20-alkyl, C1-C20-alkyl containing one or more Si, N, P, O or S atoms, C6-C30-aryl, preferably C6-C14-aryl, C4-C14-heteroaryl, —N(C6-C14-aryl)2, and Y1, where Y1 may be identical or different and are selected from among —CH═CH2, trans- or cis-CH═CH—C6H5, acryloyl, methacryloyl, methylstyryl, O—CH═CH2 and glycidyl, where Y2 is selected from among —CH═CH2, trans- or cis- CH═CH—C6H5, acryloyl, methacryloyl, methylstyryl, —O—CH═CH2 and glycidyl, and one or more groups Y1 or Y2 may be crosslinked to one another.
Abstract:
The invention relates to a compound containing at least one unsaturated, radically or cationically polymerizable group and at least one carbamate terminal group or urea terminal group.
Abstract:
A process for producing scratch-resistant coatings, encompassing the following steps: applying at least one UV-curable coating composition to at least one surface of an article to be coated, said coating composition comprising at least one polymer and/or oligomer P1 containing on average at least one ethylenically unsaturated double bond per molecule, and curing the coating composition by exposure to UV radiation, which comprises conducting the curing of the coating composition under an oxygen-containing protective gas which has an oxygen partial pressure in the range from 0.2 to 18 kPa.
Abstract:
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.
Abstract:
The present invention relates to a method of producing at least one coating film on at least one area of a substrate surface, which comprises at least the following steps in the following order: a) initiating at least one crosslinking reaction in at least one reactive coating formulation; b) applying said at least one reactive coating formulation before the onset of said at least one crosslinking reaction on said at least one area of said substrate surface. The present invention additionally relates to a corresponding means of producing at least one coating film on at least one area of a substrate surface, having at least the following elements: a) at least one storage container for at least one reactive coating formulation, b) at least one exposure unit, preferably a UV exposure unit, more preferably a UV laser, and c) at least one application unit having a nozzle, in particular a spraying head, and/or d) a bell for electrostatic application (ESTA bell), wherein said at least one exposure unit is designed so that the radiation generated in said at least one exposure unit is brought into contact with said at least one reactive coating formulation in said at least one application unit. Also claimed, finally, is a coating film which can be produced by the method of the invention.
Abstract:
Compounds having isocyanate groups with or without blocking, allophanate groups and free-radically polymerizable C—C double bonds, the C—C double bonds being in activated form by virtue of a carbonyl group attached directly to them or by virtue of an oxygen atom in ether function (activated double bonds), derived from polyisocyanates and alcohols A which in addition to the alcohol group also carry an activated double bond (compounds I). The invention additionally relates to radiation-curable formulations and coating compositions comprising the compounds I, to methods for coating using these substances, and to coated articles produced using these methods. Furthermore, the invention relates to the use of the compounds I in radiation-curable compositions such as in casting compositions, dental compounds, composite materials, sealing compounds, adhesives, troweling compounds, printing inks, in photostructurable compositions such as solder resists, photoresists, photopolymeric printing plates, and stereolithography resins.