摘要:
The present invention relates to dispersible polyurethanes and polyurethane dispersions curable with UV radiation, to a process for preparing them, and to their use.
摘要:
Process for preparing (meth)acrylates of C10-alcohol mixtures, by reacting (meth)acrylic acid with an isomer mixture of C10-alcohols composed of 2-propylheptanol as the main isomer and at least one of the C10-alcohols 2-propyl-4-methylhexanol, 2-propyl-5-methylhexanol, 2-isopropylheptanol, 2-isopropyl-4-methylhexanol, 2-isopropyl-5-methylhexanol and/or 2-propyl-4,4-dimethylpentanol, in the presence of at least one acidic catalyst and of at least one polymerization inhibitor and in the presence of a solvent which forms an azeotrope with water, the azeotrope is distilled off and condensed, and the condensate splits into an aqueous phase and an organic phase, wherein a) the esterification is performed in a reactor with a circulation evaporator and b) in the presence of a solvent, and c) the crude product is purified by subsequent purifying distillation.
摘要:
The invention relates to fluoranthene derivatives of the general formula (I) in which R1, R2, R3 and a are each defined according to the description, with the proviso that at least one of the R1 or R2 radicals is not hydrogen, to processes for their preparation and to the use of the fluoranthene derivatives as emitter molecules in organic light-emitting diodes (OLEDs), to a light-emitting layer comprising the inventive fluoranthene derivatives as emitter molecules, to an OLED comprising the inventive light-emitting layer and to devices comprising the inventive OLED.
摘要:
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.
摘要:
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).
摘要:
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.
摘要:
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.
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.