1
Kalidas Chakravarti: Spin finish composition. Bridgestone Firestone, Daniel N Hall, August 3, 1993: US05232742 (20 worldwide citation)

Spin finish concentrate composition and the oil-in-water emulsion made from the concentrate for application for conventional speed or high speed melt spinning processes for producing polyester or polyamide yarns, consists essentially of oil lubricant component, pentaerythritol ester lubricant, ethox ...


2
Kalidas Chakravarti, Jamshiid Khalatbari: Process for producing anti-wicking polyester yarn and product produced thereby. Bridgestone Firestone, Daniel N Hall, May 26, 1992: US05116682 (20 worldwide citation)

A process for producing anti-wicking and water repellant polyester yarns at high processing speeds. Polyester yarn or other heat stable yarn is continuously fed to a coating station, the yarn is then coated with a fluorocarbon polymer emulsion or dispersion and the yarn is dried in an RF oven, heat ...


3
Kalidas Chakravarti: Process and finish composition for producing adhesive active polyester yarn. Allied Chemical Corporation, Virginia S Andrews, September 7, 1982: US04348517 (18 worldwide citation)

A fiber finish composition, a process which includes treating polyester yarn therewith and polyester yarn so treated are all disclosed. The fiber finish composition comprises a triglycidyl ether of glycerol; a low viscosity diglycidyl ether having the structural formula ##STR1## wherein R is alkylen ...


4
Stanley D Lazarus, Kalidas Chakravarti, Hugh H Rowan, James G Neal: Production of thermally stabilized polyester. Allied Chemical Corporation, Fred L Kelly, Richard A Anderson, October 16, 1979: US04171422 (17 worldwide citation)

High molecular weight linear condensation polyesters are stabilized against deterioration by heat by reacting the polyester in molten form with certain polycarbonates in the presence of a catalytic amount of a phosphonium compound selected from the group consisting of tetra-n-alkylphosphonium acetat ...


5
Kalidas Chakravarti: Cut resistant antimicrobial yarn and apparel. Whizard Protective Wear, Watts Hoffmann Fisher & Heinke Co, July 17, 2001: US06260344 (11 worldwide citation)

A knittable cut resistant yarn for use in protective wear, such as gloves, arm protectors, aprons, or the like, including a core with at least one strand of flexible material selected from the group consisting of stainless steel wire and poly-paraphenylene terephthalamide. The core is wrapped with a ...


6
Kalidas Chakravarti: Cut resistant yarn and apparel. Whizard Protective Wear, Watts Hoffman Fisher & Heinke Co, July 31, 2001: US06266951 (10 worldwide citation)

A knittable, cut-resistant yarn for use in protective wear, such as gloves, arm protectors, aprons, or the like, including a core with at least one strand of flexible, stainless steel wire having a diameter of about 0.002 inches and at least one strand of an anti-microbial treated fiber. A first wra ...


7
Kalidas Chakravarti, Stanley D Lazarus: Process for the production of reinforced rubber articles. Allied Corporation, Virginia S Andrews, May 3, 1983: US04381640 (8 worldwide citation)

A process for the production of reinforced rubber articles formed from polyester yarn embedded into rubber stock is disclosed. The process comprises the steps of: (1) treating the yarn with a finish composition which comprises water and a silane having the structural formula: ##STR1## wherein n=2 to ...


8
Stanley D Lazarus, Kalidas Chakravarti: Production of thermally stabilized polyester. Allied Chemical Corporation, Fred L Kelly, December 19, 1978: US04130541 (8 worldwide citation)

High molecular weight linear condensation polyesters are stabilized against deterioration by heat by reacting the polyester in molten form with an epoxy compound having 5 to 25 carbon atoms in the molecule and selected from the group consisting of ##STR1## where R represents the radical remaining af ...


9
Stanley D Lazarus, Kalidas Chakravarti: Production of thermally stabilized polyester. Allied Chemical Corporation, Fred L Kelly, Richard A Anderson, February 13, 1979: US04139521 (7 worldwide citation)

High molecular weight linear condensation polyesters are stabilized against deterioration by heat with a stabilizer comprising an N-epoxyalkyl imide of a dicarboxylic acid, having 5 to 20 carbon atoms in the imide molecule and composed of carbon, hydrogen, carbonyl and epoxy oxygen, and imide nitrog ...


10
Kalidas Chakravarti: Spin finish composition and method of using a spin finish composition. Bridgestone Firestone, Daniel N Hall, October 25, 1994: US05358648 (5 worldwide citation)

Spin finish composition for conventional speed spinning of polyester yarns providing yarn of superior quality, low emissions and no significant deposits on processing equipment, is a non-aqueous composition consisting essentially of from 10 to 70% by weight of a trimethylol or tetramethylol C.sub.1 ...