3m Innovative Properties Company

Minnesota Mining and Manufacturing Company

3m Innovative Properties Company Corporation of Delaware

Llinas, Adolfo M.

Stephen E Krampe

Matthew T Scholz

Michael D Delmore

Michael P Daniels

Chung I Young

Danli Wang

Albert I Everaerts

Cheryl L Moore

Patrick J Parks

Charles W Taylor

Zhming Zhou

Adolfo M Llinas

Caroline M Ylitalo

Robin Edgar Wright

Scott A Burton

Alan J Sipinen

Zhiming Zhou

Yen-Lane Chen

Mark E Napierala

Leon Levitt

Robert D Kampfer

Jeffrey H Tokie

Brandon T Berg

Richard L Walter

Steven C Stickels

James K Young

Peter M Seiler

Victor P Thalacker

William A Eibner

Richard H Johnson

The present disclosure describes articles, such as medical articles, containing a substrate having disposed thereon a hydrophilic gel material (e.g., a shaped hydrophilic gel material or a coating of a hydrophilic gel material) and methods for making such articles. Methods are provided for making hydrophilic gel materials from a precursor composition that contains a polar solvent and a polymerizable material that is miscible with the polar solvent.

Hydrophilic gel materials and methods of making

Methods and products for protecting tissue of a patient during a surgical procedure that involve making an incision in the tissue and retracting the tissue to make a larger opening, wherein the methods and products use a water-resistant stress-distributing layer.

Products for reducing tissue trauma using water-resistant stress-distributing materials

Methods and products for protecting tissue of a patient during a surgical procedure that involve making an incision in the tissue and retracting the tissue to make a larger opening, wherein the methods and products use a water-absorbing stress-distributing layer.

Methods and products for reducing tissue trauma using water-absorbing stress-distributing materials

An iodine/iodide-containing hot melt coatable adhesive is provided. This adhesive is prepared by mixing iodine and an iodide salt, individually or in combination, with solubilizing liquids. The iodine and iodide salt are combined with a pre-adhesive composition in a hot melt mixer, with an iodine/iodide complexing agent being present in the mixture. The mixture is mixed at a temperature from about 130&#xb0; C. to about 200&#xb0; C. and sufficiently to form an iodine/iodide-containing hot melt coatable adhesive. Alternatively, the iodide may be generated in situ. The adhesive so prepared may be packaged for coating on a substrate at a later time, or may be immediately coated to form an adhesive composite. Adhesive composites, particularly surgical incise drapes, are provided incorporating this hot melt coatable adhesive.

Iodine/iodide-containing hot melt coatable adhesive, methods and uses therefor

A wet stick pressure sensitive adhesive comprising the solventless polymerization product of: a) about 30 to about 70 parts by weight of an (meth)acrylate ester monomer wherein the (meth)acrylate ester monomer, when homopolymerized, has a Tg of less than about 10&#xb0; C.; b) about 70 to about 30 parts by weight of a hydrophilic acidic comonomer; and c) about 10 to 100 parts based on 100 parts of the sum of components (a+b) of a non-reactive plasticizing agent, wherein the pressure sensitive adhesive adheres to wet substrate surfaces and a method of making.

Wet surface adhesives

An absorbent dressing comprising a hydrophilic gel absorbent layer having a patterned surface on at least one major surface thereof is provided. The patterned surface allows greater surface area for absorption of wound exudate when oriented toward the wound surface, while reducing the absorbent surface area in direct or indirect contact with the wound.

Patterned absorbent article for wound dressing

An elastic web of material has a multiplicity of stems extending from at least one side of the web. The web includes a first continuous layer of elastic material having a first side and a second side and a second layer of material. The second layer of material has a first side which faces the first side of the first layer and a second side from which the stems extend. The first and second layers of material are joined together. The second layer of material can be formed of thermoplastic material or melt processable polymeric material. The first and second layers of material are melt formed. They are joined by coextrusion or lamination to form a multiple layer sheet on which a multiplicity of stems are formed on at least the second layer by a process such as embossing the stems into the heated web using a patterned roll or mold.

Elastic fastener

The present invention is directed to a cold seal package that includes constructions wherein two substrates, or two portions of one substrate, are sealingly engaged to one another using a substantially natural latex rubber-free contact adhesive. The two substrates can be easily peeled apart without substantial damage to the substrates. Furthermore, the substrates cannot typically be resealed, or refastened, once peeled apart. That is, the cold seal formed by the adhesive between the substrates is substantially non-refastenable. Advantageously, a cold seal package of the present invention is particularly well suited for aseptic delivery of packaged goods, such as bandages, dressings, and the like.

Cold seal package and method for making the same

Styryl-modified acrylate polymer pressure sensitive adhesive beads, adhesive films made therefrom and methods of making the same. Surprisingly, the polymerization of styryl-functional monomer into bead formulations provides beads that can be easily extruded and made into adhesive films having high shear strength. The polymerization of styryl-functional monomer into bead formulations comprising methacrylic acid also obviates the need to use a modifier moiety.

Styrl-modified acrylate polymer pressure sensitive adhesive beads

A method of coating an adhesive polymer comprising hot-melt coating a composition of a hydrophobic adhesive polymer and a transient polar processing aid onto a substrate is provided. In addition, a method of coating a hydrophobic adhesive polymer when contacted with a transient polar processing aid, and a hot-melt coatable adhesive composition are also provided. These methods provide clear, smooth, and foam-free coatings, that are also substantially free of high temperature, low temperature, and processing aid-induced coating defects.

Method for coating adhesive polymers

The present invention relates to a method of suspension polymerization of a pressure-sensitive acrylate copolymer bead having a glass transition temperature of 0.degree. C. or less which are storage stable in addition to being extrudable at temperature below about 340.degree. F. (171.degree. C.). The method comprises making a monomer-containing premix comprising (i) about 70 to about 98 parts by weight of an acrylic acid ester monomer of non-tertiary alcohol, the alcohol having from 1 to 14 carbon atoms, with the average number of carbon atoms being about 4 to about 12, (ii) about 1 to about 10 parts of a polar monomer copolymerizable with the acrylic acid ester, and (iii) about 1 to about 40 parts vinyl acetate monomer, wherein (i), (ii), and (iii) comprise 100 parts of the monomer-containing premix, (iv) about 0.01 to about 0 5 part by weight chain transfer agent, and (v) about 0.05 to about 1.0 part by weight free-radical initiator, wherein (iv) and (v) are each independently based upon 100 parts by weight total monomer content and wherein about 0.05 to about 30 parts by weight modifier moiety based upon 100 parts by weight total monomer content is present in one or more of the following: said monomer-containing premix, said water phase; the oil-in-water suspension; the aqueous suspension of polymer beads after the exotherm of the polymerization has been reached. The monomer-containing premix is then combined with a water phase containing a sufficient amount of suspending agent to form a suspension. The suspension is concurrently agitated and polymerization of the monomer is permitted until polymer beads are formed. The polymer beads are then collected. The invention also relates to the polymer beads themselves and adhesives prepared therefrom.

Vinyl acetate modified suspension polymer beads, adhesives made

Growing community of inventors

Maplewood, MN, United States of America

Stephen E Krampe