Electrically conductive masking tapes include an electrically conductive backing and an electrically conductive pressure sensitive adhesive layer. The pressure sensitive adhesive contains an acrylate-based copolymeric matrix, a crosslinker, an electrically conductive filler, and at least one antioxidant. The acrylate-based copolymeric matrix is the reaction product of a polymerizable mixture including at least one first alkyl(meth)acrylate monomer with a homopolymer Tg of less than −50° C., and at least one hydroxyl-functional alkyl(meth)acrylate with a homopolymer Tg of less than −10° C. The electrically conductive tape is capable of being laminated to and cleanly removed from a substrate surface, after being subjected to harsh conditions such as plasma vapor deposition conditions.

The invention relates to a hot-melt adhesive composition, comprising at least one polyolefin polymer at a content from 5 to 90% by weight; at least one branched polypropylene at a content from 0.1 to 10% by weight; at least one tackifying resin at a content from 0.1 to 60% by weight; optionally, at least one styrene block copolymer from 0 to 30% by weight; optionally, at least one plasticizer at a content from 0 to 30% by weight; optionally, at least one stabilizer at a content from 0 to 5% by weight; and optionally, at least one wax at a content from 0 to 30% by weight. The invention further relates to the use of a branched polypropylene for reducing stringing of a hot-melt adhesive composition.

A hot melt adhesive composition that includes at least 40% by weight of a metallocene-catalyzed polybutene-1 selected from the group consisting of polybutene-1 homopolymer, polybutene-1 copolymer, and combinations thereof, the metallocene-catalyzed polybutene-1 including at least 30% by weight, based on the weight of the hot melt adhesive composition, of a metallocene-catalyzed polybutene-1 having a melt flow rate of at least 1000 grams per 10 minutes at 190° C., tackifying agent, and at least 15% by weight wax, the hot melt adhesive composition having a specific gravity of less than 0.95.

The hot melt adhesive composition includes from 1% by weight to less than 10% by weight total polymer content, of which less than 10% by weight, based on the hot melt adhesive composition, is a single site-catalyzed propylene polymer selected from the group consisting of a single site-catalyzed propylene homopolymer, a single site-catalyzed propylene/alpha-olefin copolymer, and combinations thereof, liquid plasticizer, and at least 45% by weight of a hydrocarbon tackifying agent having a softening point greater than 90° C.

The inventors have discovered hot melt adhesive compositions that can be formulated to have a high percentage of environmentally conscious components and still provide performance over a broad temperature range.

The invention features a hot melt adhesive composition including from 5% by weight to 50% by weight of a styrene block copolymer, from 15% by weight to 75% by weight of a bio-based tackifying agent, and from 5% by weight to 40% by weight of an aliphatic plasticizer having a cyclo-aliphatic content of no greater than 1% by weight as tested by .sup.1H-NMR Spectroscopy, wherein said hot melt adhesive composition has an environmentally conscious component content of at least 50% by weight.

Anti-icing stacks for protecting an aerodynamic surface are described. In some embodiments, an anti-icing stack includes an anti-icing layer, an elastomeric erosion protection layer, and an additional layer. The erosion protection layer is disposed between the anti-icing layer and the additional layer. The additional layer has a thickness greater than the thickness of the erosion protection layer and a tensile modulus of no more than the tensile modulus of the erosion protection layer. The additional layer may be a foam adhesive layer.

The purpose of the present invention is to provide a double-sided adhesive film which has a generally equal elongation in the XY (longitudinal and transverse) directions, more preferably in the thickness direction, while being prevented from the occurrence of adhesive protrusion or glue burr, and which has higher adhesive force and higher holding power in comparison to similar single-layer adhesive articles, while being applicable to a stretchable or flexible adherend. A double-sided adhesive film according to the present invention is a substrate-less double-sided adhesive film which is composed of a center layer that is formed of a resin adhesive, and adhesive layers that are superposed on the front surface and the back surface of the center layer, said adhesive layers being formed of a resin that is the same as or similar to the resin that constitutes the center layer, wherein the weight average molecular weight or the crosslinking degree of the resin that constitutes the center layer is higher than the weight average molecular weight or the crosslinking degree of the resin that constitutes the adhesive layers. This double-sided adhesive film is characterized in that the tolerance between the elongation in the longitudinal direction and the elongation in the transverse direction is ±20% or less relative to one of the elongations, more preferably, the elongation in the longitudinal direction and the elongation in the transverse direction are equal to each other.

A polydiorganosiloxane having both a silicon bonded aliphatically unsaturated group and a silicon bonded poly(meth)acrylate polymer or copolymer, and method for preparation of this polydiorganosiloxane are disclosed. The method preserves the aliphatically unsaturated groups when grafting the poly(meth)acrylate to the polydiorganosiloxane. This polydiorganosiloxane is useful in hydrosilylation reaction curable compositions, such as pressure sensitive adhesive compositions.

The present invention relates to an ethylene-vinyl alcohol copolymer composition, a single-layer film and a multilayer structure containing the same. Said ethylene-vinyl alcohol copolymer composition includes an ethylene-vinyl alcohol copolymer, an antioxidant, and a fluorine-containing compound; and the ratio of the antioxidant content to the fluorine content is 0.5 to 65. Thereby, the film containing said ethylene-vinyl alcohol copolymer composition not only has good heat resistance, but also can avoid the situation that a large number of gels are generated during the preparation process.

The present invention aims to provide an adhesive tape that is easily peelable while capable of maintaining high adhesion at high temperature. The present invention also aims to provide a method for fixing an electronic device component or an in-vehicle device component using the adhesive tape and a method for producing an electronic device or an in-vehicle device. Provided is an adhesive tape including an adhesive layer containing: an acrylic copolymer; and 0.01 parts by weight or more and 10 parts by weight or less of a compound having a structure represented by the following formula (A) or (B) relative to 100 parts by weight of the acrylic copolymer:

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