3m Innovative Properties Company

Aizoh Sakurai

Toshihiro Suwa

Yoshiteru Kakinuma

Eiji Mizuno

Bing Liu

Kosuke Sugawa

Yasuhiro Mino

Hiroyasu Nagata

Kana Saito

Silicone pressure-sensitive adhesives is the reaction product of a composition including a silanol end group-containing linear organopolysiloxane; a non-functional linear organopolysiloxane; and a silicate resin; wherein the dynamic viscosity of the non-functional linear organopolysiloxane at 25° C. is 100,000 mm/sec or greater. The silicone pressure-sensitive adhesive has enhanced adhesion while minimizing skin damage and pain during removal of the adhesive.

Silicone pressure-sensitive adhesive and silicone pressure-sensitive adhesive composition

The disclosed adhesive sheet exhibits high anchoring performance and where separation between the substrate and the adhesive layer substantially does not occur when unwinding or re-peeling in actual applications. The adhesive sheet comprises a substrate including a urethane polymer component at least at a portion of a surface and a silicone adhesive layer that is in contact with the urethane polymer component, wherein the urethane polymer having a chain extender-derived hard segment and a polyoxyalkylene polyol-derived soft segment.

Adhesive sheet

An adhesive sheet comprising a base material, a primer layer, and an adhesive layer cured by radiation, arranged in this order. The primer layer comprises a (meth)acrylic polymer having a nitrogen-containing group and a polymer having a polyoxyalkylene group.

An articleis provided with an adhesive layerthat includes an adhesive, a release layerthat is stacked on the adhesive layer, and an air layerthat is interposed between the adhesive layerand the release layer. On a surfaceof the release layerthat opposes the adhesive layer, microprotrusionsthat contact the adhesive layerwith tipsare provided. The microprotrusionsare provided with a wall-shaped portionhaving a shape that at least partially surrounds the air layerbetween the adhesive layerand the release layer. The wall-shaped portionprotects a main portionof the adhesive layerthat is adjacent to the air layerfrom contamination. By selecting a shape, dimensions, and the like of the micro protrusions, a release force of the release layercan be adjusted to a desired range.

Article provided with adhesive layer and release layer

Polylactic acid-containing resin composition that includes a polylactic acid; and a (meth)acryl-silicone copolymer that includes a methyl(meth)acrylate; and a reactive silicone, wherein the (meth)acryl-silicone copolymer has a weight average molecular weight of 25,000 or more. Methods for producing a polylactic acid-containing resin composition, polylactic acid-containing resin films, polylactic acid-containing resin release films, polylactic acid-containing resin release films, and methods for producing polylactic acid-containing resin films are also disclosed.

Release film formed from polylactic acid-containing resin

There is provided a pressure sensitive adhesive displaying sufficient adhesive force to the surface of PMMA under a wide range of temperatures including ambient, low, and high temperatures, and also an adhesive tape having an adhesive layer including the pressure sensitive adhesive. There is provided a pressure sensitive adhesive comprising a polymer obtained by polymerizing 100 mass parts of a monomer mixture comprising: a monomer component 1 comprising an acrylate mixture selected from an aliphatic alkyl(meth)acrylate having a carbon number of 4-6 and an aliphatic alkyl(meth)acrylate having a carbon number of 7-12; a monomer component 2 comprising an amide group-containing vinyl monomer; a monomer component 3 comprising an ester of a non-tertiary aromatic alcohol and (meth)acrylic acid, or an ester of a non-tertiary alicyclic alcohol and (meth)acrylic acid; and a monomer component 4 comprising (meth)acrylic acid.

Pressure sensitive adhesive and adhesive tape

Polylactic acid-containing resin composition that includes a polylactic acid; and a (meth)acryl-silicone copolymer that includes a methyl (meth)acrylate; and a reactive silicone, wherein the (meth)acryl-silicone copolymer has a weight average molecular weight of 25,000 or more. Methods for producing a polylactic acid-containing resin composition, polylactic acid-containing resin films, polylactic acid-containing resin release films, polylactic acid-containing resin release films, and methods for producing polylactic acid-containing resin films are also disclosed.

To provide a pressure-sensitive adhesive composition for a removable pressure-sensitive adhesive tape which can be, after attaching to an adherend, easily removed from the adherend by stretching the pressure-sensitive adhesive tape and does not cause adhesive transfer on the adherend or damage of the adherend. A pressure-sensitive adhesive composition comprises a cohesive component comprising a styrene-based block copolymer, and a basic component.

Adhesive composition, adhesive tape and adhesion structure

A polylactic acid-containing resin composition that include (a) a polylactic acid and (b) a (meth)acrylic copolymer having a molecular weight in excess of 30,000 and that is the reaction product of a monomer mixture including a methyl (meth)acrylate (i) and a (meth)acrylic acid ester (ii) that is different than the methyl (meth)acrylate (i). The (meth)acrylic acid ester (ii) is represented by any one of formula (I): CH&#x2550;C(R)&#x2014;COO&#x2014;Rformula (II): CH&#x2550;C(R)&#x2014;COO&#x2014;(CHCHO)&#x2014;R, or formula (III): CH&#x2550;C(R)&#x2014;COO&#x2014;(CHCHO)-Ph. A method for preparing the (meth)acrylic copolymer is also provided as well as articles formed from polylactic acid-containing resin compositions.

Growing community of inventors

Tokyo, Japan

Aizoh Sakurai