Amerace Corporation

Stanbee Company, Inc.

Fmc Corporation

Other

Bruce S Goldberg

Camillo M Vecchiotti

Leo Provencher

Mahendra Shah

Dale Martell

James L Manganaro

Samuel Nochumson

Richard Chen

Charles A Gray

John T Loft

Dennis E Johnson

George E Raynor, Jr

Richard Y Chen

Stephen W Andruski

Stephen Walter Andruski

A method is provided for making a microcellular shoe stiffener has first and second adhesive layers coextruded on opposite first and second surfaces of a stiffener core. The stiffener core may include a recycled polymeric material. Nitrogen in a supercritical fluid state is introduced into the extruder for the stiffener core to produce a closed cell foam with a gaseous component. The gas reduces the weight and cost of the stiffener without significantly reducing stiffness and resiliency.

Methods for manufacturing footwear stiffeners

A microcellular shoe stiffener has at least one adhesive layer coextruded with and carried on a stiffener core. A liquid, such as liquid nitrogen, is introduced into the extruder for the stiffener core to produce a closed cell foam with a gaseous component. The gas reduces the weight and cost of the stiffener without significantly reducing stiffness and resiliency.

Compositions for manufacturing footwear stiffeners

Dental hygiene tool

The present invention relates to a process and composition for stiffening materials for use in the manufacturing of footwear using a combination of stiffeners and adhesives.

Stiffeners for use in footwear

A process of making a fabric based stiffener material having thermal adhesive properties on its top and bottom surfaces which is based on (a) contacting a non-woven fabric with a latex forming resin and a finely divided powder adhesive polymer to form a latex saturated non-woven fabric; and (b) removing the excess latex from the non-woven fabric formed in step (a); and (c) drying the product of step (b).

Stiffener material with self adhesive properties

Disclosed is a centrifuge tube containing a porous selection means for selectively separating and recovering biological substances from gels, broths, or solutions containing the same, and thus concentrating them, the tube comprising separate upper and lower containers and means for joining the two containers to form a unitary device, the bottom of the upper container comprising a porous selection means, preferably a membrane containing a particulate substance which will selectively bind the biological substances while allowing unbound substances to pass through from the upper to lower container while being centrifuged. A method for recovering the biological substances in high concentration using the centrifuge tube is also provided, comprising introducing said gels, broths, or solutions containing the desired biological substances, centrifuging the same until the desired substance is bound to the selection means, and eluting the bound material from the selection means to recover the substance in concentrated form.

Method for separation and recovery of biological materials

The reaction time and ease of handling of reactants in the known process of forming optically active (S)-cyanohydrins by reacting aldehydes with hydrocyanic acid in the presence of the enzyme S-oxynitrilase and a solvent may be significantly improved over the known methods when the solution of aldehydes and acid is passed through a porous membrane comprising a polymeric resinous binder having finely divided filler particles dispersed throughout the binder to which the S-oxynitrilase enzyme has been chemically bound.

Process for preparing optically active cyanohydrins with enzymes

A microporous sheet comprising a polymeric matrix having a liquid insoluble, particulate, activated polysaccharide media dispersed therein; use of the sheet in affinity chromatography or ion-exchange chromatography or as a biochemical reactor or battery separator; processes for manufacturing the sheet; apparatus containing the microporous sheet as its active element; and methods for using such sheet.

Polysaccharide-based porous sheets

Cheese is made continuously by flowing milk through a spiral flow path of a reactor containing an immobilized enzyme such as rennet which coagulates the milk. The spiral flow path is formed by a spirally wound microporous sheet containing the immobilized enzyme. Adjacent surfaces of the sheet are spaced apart with a spacer which can be a plurality of microporous ribs or a sheet in open net form.

Continuous cheese-making process utilizing an immobilized rennet enzyme

A flow reactor for reacting a feedstock with a proteinaceous preparation immobilized on and within the pores of a support medium while traversing a spiral path between adjacent turns of said spiral. A support medium has a spacing means placed on one surface thereof. The support medium and spacing means are then wound upon a porous core to form a jelly roll-like spiral configuration. The marginal edges of the reactors are sealed but provision is made to introduce or remove materials from said core and the free end of the spiral is left open to also introduce or remove materials. In a first form the feedstock is introduced into the core and the reacted feedstock is removed from the spiral free end. In a second form the introduction and removal of the feedstock and reacted feedstock is reversed. The spacing means may be a series of ribs on the support medium or may be a net-like sheet.

Spiral designed reactor

A laminated microporous article consisting of at least two layers or plies, the first comprising either a thermoset or thermoplastic microporous material and the second comprising a polyester non-woven, heat bonded (in distinction to adhesive bonded) web. The resulting laminated microporous article is especially useful as a battery separator and exhibits superior properties including improved electrical resistance, toughness and tear strength, and flexibility.

Laminated microporous article

As an article of manufacture, a microporous flexible shape or sheet of a sulfur-free, cured polymeric material of a curable rubber, an ethylene-propylene copolymer or mixtures of the curable rubber and ethylene-propylene copolymer; the article possesses an average pore size of less than 2 microns, a predetermined flexibility, and improved toughness, when compared to prior art sulfur cured articles.

Flexible, microporous rubber base articles

A continuous process for preparing a microporous flexible shape or sheet of a sulfur-free, cured polymeric material of a curable rubber, an ethylene-propylene copolymer or mixtures of the curable rubber and ethylene-propylene copolymer of a predetermined flexibility ranging from a drapable, conformable shape to a stiff material; electron beam curing of the curable polymeric material at low irradiation levels is one advantage of the continuous process as well as the capability of producing also backed materials using considerably thinner polymeric material layers thereon; the products obtained thereby are suitable as battery separators.

Continuous process for producing, by irradiation, a microporous rubber

A laminated microporous article consisting of at least two layers or plies, the first comprising either a thermoset or thermoplastic microporous material and the second comprising a polyester non-woven, heat bonded (in distinction of adhesive bonded) web. The resulting laminated microporous article is especially useful as a battery separator and exhibits superior propertries including improved electrical resistance, toughness and tear strength, and flexibility.

Growing community of inventors

Clifton, NJ, United States of America

Bruce S Goldberg