Abstract:
The present disclosure relates to a pressure sensitive adhesive comprising: a) a multi-arm block copolymer of the formula Qn-Y, wherein: (i) Q represents an arm of the multi-arm block copolymer and each arm independently has the formula G-R, (ii) n represents the number of arms and is a whole number of at least 3, and (iii) Y is the residue of a multifunctional coupling agent, wherein each R is a rubbery block comprising a polymerized conjugated diene, a hydrogenated derivative of a polymerized conjugated diene, or any combinations thereof; and each G is a glassy block comprising a polymerized monovinyl aromatic monomer; b) a polymeric plasticizer having a weight average molecular weight Mw of at least 10,000 g/mol; c) at least one hydrocarbon tackifier, wherein the hydrocarbon tackifier(s) have a Volatile Organic Compound (VOC) value of less than 1000 ppm, when measured by thermogravimetric analysis according to the weight loss test methods described in the experimental section; and d) optionally, a linear block copolymer of the formula L-(G)m, wherein L is a rubbery block comprising a polymerized olefin, a polymerized conjugated diene, a hydrogenated derivative of a polymerized conjugated diene, or any combinations thereof; and wherein m is 1 or 2. The present disclosure also relates to a method of manufacturing such a pressure sensitive adhesive and uses thereof.
Abstract:
A multilayer pressure sensitive adhesive (PSA) film having a first pressure sensitive adhesive layer for bonding glass substrates and at least a second opposing layer, the first pressure sensitive adhesive layer being a polymerization reaction product of a precursor comprising a monomer or a partially prepolymerized monomer, having a curable ethylenically unsaturated group, whereas the precursor further comprises an oligomeric organofunctional silicone having at least 2 Si atoms, in particular 2 to 10 Si atoms, wherein the monomer having a curable ethylenically unsaturated further has a coupling group with a Zerewitinow-active H-atom and wherein the oligomeric organofunctional silicone has at least one coupling group which is reactive to the coupling group of the monomer having a curable ethylenically unsaturated group, or wherein the oligomeric organofunctional silicone has at least one coupling group with a Zerewitinow-active H-atom and wherein the monomer having a curable ethylenically unstaurated further has a coupling group which is reactive to the coupling group of the oligomeric organofunctional silicone; with the proviso that if the monomer having a curable ethylenically unsaturated group further has a coupling group with a Zerewitinow-active H-atom which is selected to be —OH, then the coupling group of the oligomeric organofunctional silicone which is reactive to the coupling group of the monomer having a curable ethylene group cannot be selected to be an amino group.
Abstract:
Adhesive composition are described comprising the reaction product of at least one halogenated copolymer of isobutylene wherein halogen atoms of the copolymer are replaced by a polyamine having a melting point greater than 25° C., thereby crosslinking the copolymer. The isobutylene copolymer comprises halogenated repeat units derived from isoprene, butadiene, para-alkyl styrene, or a combination thereof. The adhesive composition comprises a copolymer of isobutylene repeat units and second repeat units selected from alkene repeat units, para-methyl styrene repeat units, or a combination thereof wherein at least a portion of the second repeat units are directly bonded to one another with a polyamine crosslinker having a melting point greater than 25° C. Also described are adhesive articles, such as tapes, comprising such adhesives.
Abstract:
The present disclosure is directed to a curable precursor of a pressure sensitive adhesive comprising: a) a (co)polymeric material comprising the reaction product of a (co)polymerizable material comprising a (meth)acrylate ester monomer; and optionally, a co-monomer having an ethylenically unsaturated group and which is different from the (meth)acrylate ester monomer; b) a polyfunctional aziridine curing agent; and c) an acid generating agent. The present disclosure is also directed to a method of manufacturing such pressure sensitive adhesives and uses thereof.
Abstract:
Control cure thermally-conductive gap filler materials are described, as are methods of curing. Also described are curing agents and methods of making curing agents.
Abstract:
The present disclosure relates to a process for the manufacturing of a compound comprising a (meth)acryloyl group, wherein the process comprises the steps of: a) providing a multi-screw extruder comprising a reaction chamber; b) providing reactants and reagents comprising: i. an alcohol or a primary or secondary amine; ii. a base; and iii. a (meth)acryloyl halide or a 3-halopropionyl halide; and c) incorporating the reactants and reagents into the reaction chamber of the multi-screw extruder, thereby forming a reaction product stream comprising the compound comprising a (meth)acryloyl group.
Abstract:
The present disclosure is directed to a curable precursor of a pressure sensitive adhesive comprising: a) a (co)polymeric material comprising the reaction product of a (co)polymerizable material comprising a (meth)acrylate ester monomer; and optionally, a co-monomer having an ethylenically unsaturated group and which is different from the (meth)acrylate ester monomer; b) a polyfunctional aziridine curing agent; and c) an acid generating agent. The present disclosure is also directed to a method of manufacturing such pressure sensitive adhesives and uses thereof.
Abstract:
The present disclosure is directed to a curable precursor of a pressure sensitive adhesive comprising: a) a (co)polymeric material comprising the reaction product of a (co)polymerizable material comprising a (meth)acrylate ester monomer; and optionally, a co-monomer having an ethylenically unsaturated group and which is different from the (meth)acrylate ester monomer; b) a polyfunctional aziridine curing agent; and c) an acid generating agent. The present disclosure is also directed to a method of manufacturing such pressure sensitive adhesives and uses thereof.
Abstract:
Adhesive composition are described comprising the reaction product of at least one halogenated copolymer of isobutylene wherein halogen atoms of the copolymer are replaced by a polyamine having a melting point greater than 25° C., thereby crosslinking the copolymer. The isobutylene copolymer comprises halogenated repeat units derived from isoprene, butadiene, para-alkyl styrene, or a combination thereof. The adhesive composition comprises a copolymer of isobutylene repeat units and second repeat units selected from alkene repeat units, para-methyl styrene repeat units, or a combination thereof wherein at least a portion of the second repeat units are directly bonded to one another with a polyamine crosslinker having a melting point greater than 25° C. Also described are adhesive articles, such as tapes, comprising such adhesives.
Abstract:
The present disclosure relates to a pressure sensitive adhesive foam comprising a rubber-based elastomeric material, at least one hydrocarbon tackifier and a crosslinking additive selected from the group of multifunctional (meth)acrylate compounds. The present disclosure also relates to a method of manufacturing such a pressure sensitive adhesive foam and uses thereof.