Embodiments of the present invention relate to article comprising 1) a functionalized component, 2) tackifier, and 3) an olefin polymer comprising one or more C3 to C40 olefins, optionally one or more diolefins, and less than 5 mole % of ethylene having a Dot T-Peel of 1 Newton or more, a branching index (g′) of 0.95 or less measured at the Mz of the polymer; and an Mw of 100,000 or less; where the functional component is selected from the group consisting of functionalized polymers, functionalized oligomers and beta nucleating agents; and where the Gardner color of the adhesive does not change by more than 7 Gardner units when the adhesive has been heat aged at 180° C. for 48 hours as compared to the Gardner color of the unaged composition.

Polyolefin adhesive compositions and articles made therefrom

This invention relates to a polymer comprising one or more C3 to C40 olefins, optionally one or more diolefins, and less than 15 mole % of ehtylene, where the polymer has: a) a Dot T-Peel of 1 Newton or more; and b) a branching index (g') of 0.95 or less measured at the Mz of the polymer; c) an Mw of 100,000 or less and to a continuous process to produce a branched olefin polymer comprising 1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a crystallinity of 5% or less under selected polymerization conditions; 2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 20% or more at the selected polymerization conditions; 3) contacting the catalyst components in the presence of one or more activators with one or more C3 to C40 olefins, and, optionally one or more diolefins; 4) at a temperature of greater than 100°C; 5) at a residence time of 120 minutes or less; 6) wherein the ratio of the first catalyst to the second catalyst is from 1:1 to 50:1; 7) wherein the activity of the catalyst components is at least 100 kilograms of polymer per gram of the catalyst components; and wherein at least 20% of the olefins are converted to polymer.

Multiple catalyst system for olefin polymerization and polymers produced therefrom

A pressure-sensitive adhesive sheet contains at least a pressure-sensitive adhesive layer containing an acrylic pressure-sensitive adhesive containing an acrylic polymer composition containing an acrylic polymer as a main component and a tackifier containing a tackifying resin as a main component, wherein reflection rate and attached amount in the fogging test in accordance with German Industrial Standard DIN 75201 are 70% or more and 20 mg or less, respectively In the acrylic pressure-sensitive adhesive which forms the pressure-sensitive adhesive layer, a ratio of components having a molecular weight of 300 or less is preferably 42% by weight or less based on the total amount of solid matter of the acrylic pressure-sensitive adhesive Furthermore, in the tackifying resin in the tackifier, a ratio of components having a molecular weight of 300 or less is suitably 42% by weight or less based on the total amount of solid matter of the tackifying resin

Pressure-sensitive adhesive sheet

A multi-layer article which may be provided in the form of a tape comprises a conformable, compressible, melt flow-resistant core layer having first and second major surfaces, a sealant layer on the first major surface of the core layer, and optionally a bonding layer on the second major surface of the core layer. The sealant layer and the bonding layer each have a surface available for contacting a separate substrate. Various thermoset and foam core layers are disclosed as are thermosettable and thermoplastic sealant layers. The articles are useful for sealing two substrates together, particularly where one of the substrates is glass. Thus, the articles are especially adapted for sealing motor vehicle windshields to a frame. Various assemblies and methods for producing the same are also described.

Sealant composition, article including same, and method of using same

An improved seal member is provided as a part of an electrochromic device to bond two glass elements together in a spaced-apart relationship. In one embodiment the seal member provides improved adhesion to a reflector/electrode on the third surface of an electrochromic mirror, or to a layer of metal on the second or third surface for an electrochromic light filter. This seal member comprises a mixture of an organic resin scaling system and an adhesion promoter, where the adhesion promotor comprises a first and a second region, where the first region interacts with the reflector/electrode or the metal layer, and a second region that interacts with the organic resin sealing system, and may even chemically react with the organic resin sealing system. In another embodiment the seal member is provided with a coefficient of thermal expansion that is closer to glass than a standard epoxy sealing system.

Seal for electrochromic devices

The invention provides a method for imparting topographical or protective features to a substrate by contacting a sheet material comprising a thermosettable layer with a substrate and heating the sheet material to an elevated temperature.

Melt-flowable materials and method of sealing surfaces

A method for sealing a discontinuity in the surface of a substrate comprises the steps of: (a) placing over said discontinuity an article comprising (i) a melt-flowable composition characterized by a first width, and (ii) a shaped, polymeric cap having a pre-selected, cross-sectional profile characterized by a second width and a shape in which the thickness of the cap across its width, the width of the cap or both the width and thickness of the cap vary; (b) heating said article to cause said melt-flowable composition to flow and seal said discontinuity; said cap controlling the melt-flow behavior of said melt-flowable composition to substantially confine said melt-flowable composition to the area underneath said cap; and (c) allowing said article to cool while substantially retaining said pre-selected cross-sectional profile of said cap. Various articles for use in the method are also disclosed. The article and the method are particularly useful for sealing the joint in a motor vehicle roof ditch.

Sealing method and article

The present invention provides a pressure-sensitive adhesive comprising the polymerization reaction product of starting materials comprising: (a) 50 to 100 parts by weight of at least one acrylic or methacrylic ester of a non-tertiary alkyl alcohol in which the alkyl group contains 4 to 20 carbon atoms; (b) 0 to 50 parts by weight of at least one reinforcing monomer, copolymerizable with component (a), the sum of (a) and (b) amounting to 100 parts by weight; and (c) 0.1 to 15 parts by weight, per 100 parts by weight of the sum of components (a) and (b), of a substantially soluble chlorinated polyolefin; said starting materials being substantially solvent-free.

Pressure-sensitive adhesives for polyolefin surfaces

Release liners comprising support sheet and face layer, the face layer comprising one or more of the following: a copolymer of ethylene and at least one polar comonomer, or a copolymer of propylene and at least one polar comonomer, or blends of such copolymers. Such release liners provide low temperature shock resistance and smooth, substantially uniform release characteristics when applied to acrylic pressure-sensitive adhesives.

Low temperature shock resistant release liner

The invention provides a process for bonding a pressure-sensitive adhesive to a rubber article The process includes the steps of heat laminating a heat-activatable adhesive bearing a primer layer to the rubber article at a temperature of at least 100 °C and bonding the pressure-sensitive adhesive to the primer layer The invention also provides an assembly comprised of a shaped rubber article heat laminated to an adhesive bearing a primer The invention also provides article of manufacture for bonding a rubber article to a surface

Rubber article capable of bonding to a pressure-sensitive adhesive and method of making

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