Basf Corporation

Badische Corporation

Thomas E Smith

James A Gusack

John W Lindsay

Johnson L Pursoo

William E Streetman

John H Sanders

Billy B Hibbard

George A Paton

Sterling M Nichols

James E Davis

MIchael V Tullos

Kenneth Harper

Hughey A Rush

Trevor P Pickering

An improved fibrous polyacrylonitrile mixture for use in friction products enables the production of low resiliency preforms by mixing an additive with a polyacrylonitrile wet gel. The additive is incorporated into the fiber in extremely large amounts. The additive is a member selected from the group consisting of:

Fibrous polyacrylonitrile reinforcing mixture for friction product

This process for making antistatic filaments utilizes a specific mixture of compounds in order to suffuse electrically conductive particles into a filamentary polymeric substrate by forwarding the substrate through a grooved roll-type mix applicator. The mixture comprises a dispersion of the electrically conductive particles in liquid solvent which is a mixture of formic acid and a member selected from the group consisting of an amide, a carboxylic acid other than formic acid, an alcohol, an ester, a ketone, an ether, and a hydrocarbon. The process provides advantages over the prior art in permitting the use of high processing speeds, enabling easy stringup, and allowing the use of knotty and/or slubby filamentary substrates.

Process for making electrically conductive textile filaments

Disclosed is a coating die which has a dilatable orifice, the orifice being dilatable due to the use of a flexible, resilient portion of the die. The die is individually cast and is 'strung-up' in the casting process. The preferred use for the die is in the coating of textile filaments, especially small diameter filaments that are slubby.

Dilatable, individually cast coating die

Disclosed is a method of making a supported antistatic yarn and products resulting therefrom. The method involves merging a support yarn into contact with a filamentary polymer substrate immediately after the filamentary substrate has had a mix applied thereto. The support yarn is solvent bonded to the polymer substrate due to the characteristics of the mix.

Method of forming supported antistatic yarn

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Williamsburg, VA, United States of America

Thomas E Smith