摘要:
The invention relates to a method for producing a separative layer of a release liner based on a formulation comprising at least one alkenyl-substituted organopolysiloxane, wherein the formulation is present in solution, a metathesis catalyst is added to the solution, the solution supplied with the catalyst is applied to a carrier material and a metathesis reaction of the alkenyl-substituted organopolysiloxane takes place on the carrier material to cure the formulation, and separative layers that can be obtained by said method.
摘要:
The present invention relates to a monomer composition comprising (i) acrylic monomers selected from (meth)acrylic acid and (meth)acrylic esters; (ii) orthoalkyl phenyl ketone- and/or orthoalkyl phenyl aldehyde-functionalized (meth)acrylate monomers; and (iii) optionally, further olefinically unsaturated monomers having functional groups. The invention further relates to a process for preparing a first polymer composition, comprising the free-radical polymerization of the monomer composition described herein, and to a polymer composition obtainable by this process. Likewise described are compositions comprising the polymer composition specified and a dienophile which can react with hydroxy-ortho-quinodimethane functional groups in a Diels-Alder or hetero-Diels-Alder reaction. Finally, the present invention also relates to the conversion of this composition to a crosslinked polymer composition.
摘要:
End-group-functionalized oligomers with controlled degrees of functionality based on styrene are produced by reacting the monomer with a regulator by means of free-radical polymerization. At least some of the quantity of regulator here is added in accordance with a prescribed programme, and specifically in such a way that at every juncture t the value of the quantitative fraction added of the regulator up to said juncture does not fall short of the value of the respective conversion U(t) in the polymerisation reaction at said juncture t by more than 0.05 (i.e. more than 5 percentage points) and does not exceed said value U(t) by more than 0.05 (i.e. more than 5 percentage points).
摘要:
Crosslinked pressure-sensitive adhesives (PSAs) based on polymers of branched macromolecules each comprising a main chain and one or more sidechains pendent to the main chain, the constitutional units thereof originating from a) X wt% of one or more acrylic and/or methacrylic esters, with 80≤X≤99.5; b) Y wt% of radically copolymerizable monomers having at least one acid function, with 0.5≤Y≤15; c) Z wt% of vinyl compounds, with 0≤Z≤5, where at least one sidechain pendent to the main chain has a number-average molar mass ≥ 1000 g/mol, and the respective amounts of constitutional units originating from a), b) and c) both in main chain and in sidechains can be the same in each case or differ by not more than 1%, and where a), b) and c) both for main chain and for sidechains may in each case be the same or different monomers, have detachment properties which can be set independently of one another relative to initial force for the introduction and total energy of the detachment procedure.
摘要:
The present invention relates to a multi-phase polymer composition comprising a comb copolymer (A) which can be obtained by polymerizing at least one (meth)acrylate monomer in the presence of at least one macromer selected from the group consisting of polymerizable ethylene-butylene, ethylene-propylene, ethylene-butylene-propylene and isobutylene macromers, and which forms a continuous acrylate phase and a discontinuous hydrocarbon phase Kw; and at least one hydrocarbon compound (B) which is soluble in the hydrocarbon phase Kw of the comb copolymer (A); where the multi-phase polymer composition has a continuous acrylate phase with a static glass transition temperature Tg(Ac) measured by the DSC method and a discontinuous hydrocarbon phase Kw1 with a static glass transition temperature Tg(Kw1) measured by the DSC method, and where the difference between the static glass transition temperatures of the polymer composition Tg(Kw) and Tg(Ac) is from 35 to 60 Kelvin. The invention further relates to pressure-sensitive adhesives comprising the polymer composition according to the invention, and to the use of the pressure-sensitive adhesives for adhesive bonding of articles, in particular for adhesive bonding of articles with non-polar surfaces. The invention further relates to a method for producing the multi-phase polymer composition.
摘要:
A method for anticorrosive treatment of metal surfaces, especially at edges and transitions of the metal components, characterized in that a self-adhesive tape is applied to the metal surface and the self-adhesive tape contains at least one layer with a material which is heated such that the material melts onto the metal surface and thus forms an anticorrosive layer.