Abstract: Moisture curable polyacrylate polymers with pedant moisture reactive silyl-functional groups bound to the polymer chain and compositions comprising the same polyacrylate polymers are provided. The polyacrylate polymers and the compositions cure by way of a condensation mechanism in the presence of moisture and a catalyst. The moisture curable polyacrylate polymers and compositions provide excellent resistance to automotive oil at high temperature and are particularly useful as sealants and gaskets in automotive powertrains.

Abstract: The present invention provides moisture curable network silicone polymers and compositions thereof, having improved resistance to automotive oil at high temperature. The network silicone polymers contain terminal moisture curable functional groups and a partially crosslinking structure that contains C—C—C linkage which separates the siloxane backbone from the moisture curable functional groups and prevent thermal decomposition of siloxane backbone.

Abstract: Disclosed is modified silica filler material wherein the silica filler material has been surface treated with both an alkyl silane and an alkenyl silane. The modified silica filler material, when included in an elastomeric composition, results in lower compression set and improved mechanical properties including viscosity, tensile strength, modulus and elongation. The filler material can be used at high levels in elastomeric compositions and does not raise the viscosity to unusable levels. The elastomeric composition including the modified filler material finds special use in the formation of gaskets for fuel cells.

Abstract: The present invention relates to liquid dual curing (moisture) and photocuring adhesives which are optically transparent/clear. More particularly, the present invention relates to liquid optically transparent/clear adhesives having at least one photo- and/or heat-curable polyolefin-based oligomer, with or without a moisture-curable polyolefin-based oligomer; a curative package to trigger and/or accelerate cure of the oligomer(s) under appropriate cure conditions; and at least one polyolefin-based polyurethane that is not reactive under the cure conditions with the photo- and/or heat-curable polyolefin-based oligomer or the moisture-curable polyolefin-based oligomer. The present invention also relates to optical assemblies that include such optically clear adhesives.

Abstract: Disclosed is a terminally functionalized polysiloxane urethane polymer comprising: polysiloxane segments comprising from 50 to 98% by weight based on the total polymer weight; urethane segments comprising from 2 to 50% by weight based on the total polymer weight; and terminal functional groups selected from (meth)acrylate functional groups, alkoxysilyl functional groups and mixtures thereof. The terminally functionalized polysiloxane urethane polymer finds use in liquid optically clear adhesive formulations wherein it can provide dual photo and moisture cure properties. In some embodiments cured reaction products of the liquid optically clear adhesive composition prepared with the terminally functionalized polysiloxane urethane polymer exhibit low haze of 2% or less and low yellowness b* values of 2 or less as prepared and after aging testing.

Abstract: Disclosed is a heat curable composition that cures to an elastomer. The composition finds special use as an injection moldable sealant, especially for fuel cells. The composition includes at least one (meth)acrylate terminated polyolefin; at least one ester (meth)acrylate monomer comprising a C1 to C30 ester; at least one free radical heat cure initiator; at least one silica filler; and optionally, one or more additives. The composition provides for rapid cure rates on the order of several minutes allowing for mass production. In addition, the formulation viscosity is sufficiently low enough to permit use in a wide variety of injection mold processes.

Abstract: Disclosed is modified silica tiller material wherein the silica filler material has been surface treated with both an alkyl silane and an alkenyl silane. The modified silica filler material when included in an elastomeric composition, results in lower compression set and improved mechanical properties including viscosity, tensile strength, modulus and elongation. The filler material can be used at high levels in elastomeric compositions and does not raise the viscosity to unusable levels. The elastomeric composition including the modified filler material finds special use in the formation of gaskets for fuel cells.

Abstract: The present invention relates to liquid dual curing (moisture) and photocuring adhesives which are optically transparent/clear. More particularly, the present invention relates to liquid optically transparent/clear adhesives having at least one photo- and/or heat-curable polyolefin-based oligomer, with or without a moisture-curable polyolefin-based oligomer; a curative package to trigger and/or accelerate cure of the oligomer(s) under appropriate cure conditions; and at least one polyolefin-based polyurethane that is not reactive under the cure conditions with the photo- and/or heat-curable polyolefin-based oligomer or the moisture-curable polyolefin-based oligomer. The present invention also relates to optical assemblies that include such optically clear adhesives.

Abstract: The present invention is directed to compositions useful for maintaining sealing force over time while under compression in compressive gaskets. Additionally, methods of preparing and using the sealing compositions and improving sealing performance using such compositions are provided.

Abstract: The present invention relates to multi-functional polymeric resin blends which have a defined average molecular weight distribution. Additionally each polymeric component of the blend has a polydispersity of from about 1.01 to about 2.50. The average functionality of the blend is from about 1.8 to about 4.0. More particularly, the present invention relates to poly(meth)acrylates having three or more functional groups. These highly functionalized resin blends are desirably prepared using controlled free radical polymerization techniques, such as single electron transfer living radical polymerization (SET-LRP) processes to produce a variety of blended resin systems which have tailored and enhanced properties.

Abstract: The present disclosure relates to liquid injection molding of a curable gasket composition to form mold-in-place gaskets. The curable gasket composition is prepared from at least an actinic radiation curable acrylic component and (meth)acrylate-functionalized silica.

Abstract: The present invention is directed to compositions useful for maintaining sealing force over time while under compression in compressive gaskets. Additionally, methods of preparing and using the sealing compositions and improving sealing performance using such compositions are provided.

Abstract: The present invention relates to multi-functional polymeric resin blends which have a defined average molecular weight distribution. Additionally each polymeric component of the blend has a polydispersity of from about 1.01 to about 2.50, The average functionality of the blend is from about 1.8 to about 4.0. More particularly, the present invention relates to poly(meth)acrylates having three or more functional groups. These highly functionalized resin blends are desirably prepared using controlled free radical polymerization techniques, such as single electron transfer living radical polymerization (SET-LRP) processes to produce a variety of blended resin systems which have tailored and enhanced properties.

Abstract: The present disclosure relates to liquid injection molding of a curable gasket composition to form mold-in-place gaskets. The curable gasket composition is prepared from at least an actinic radiation curable acrylic component and (meth)acrylate-functionalized silica.

Abstract: A dry-to-the-touch moisture curing composition useful as a sealant and adhesive which includes a reactive modified methylene diisocyanate polymer component having isocyanate functionality of about 8% to about 18% by weight of the polymer.

Abstract: A dry-to-the-touch moisture curing composition useful as a sealant and adhesive which includes a reactive modified methylene diisocyanate polymer component having isocyanate functionality of about 8% to about 18% by weight of the polymer.

Abstract: The present invention provides one-component silicone compositions, particularly useful as sealants, having low modulus and high elongation, as well as good resistance to high temperatures and humidity, and methods for preparing these sealants. In particular, the present invention provides compositions including a chain-extended curable polyorganosiloxane, a high molecular weight silicone gum and a cure system. The compositions may be used, for example, in sealing the stitching of automotive airbags.

Abstract: The present disclosure relates to liquid injection molding of gaskets. More particularly, the present disclosure relates to a low pressure and room temperature process for forming a cured-in-place gasket by liquid injection molding and to equipment useful with this process.

Abstract: The present invention relates to compositions with improved sealing characteristics for mold-in-place gaskets, and a process for forming a mold-in-place gasket by liquid injection molding. More particularly, the present invention relates to a mold-in-place gasket composition incorporating (meth)acrylate-functionalized silica, plasticizers, or both, with improved modulus and sealing properties, and a process for forming such mold-in-place gasket.

Abstract: The present invention relates to a process for forming a cured-in-place gasket by liquid injection molding. More particularly, the present invention relates to a low pressure and room temperature process for forming a cured-in-place gasket by liquid injection molding.