Weyerhaeuser Nr Company

International Paper Company

Weyerhaeuser Company Limited

International Paper Canada Pulp Holdings Ulc

North Pacific Paper Company, LLC

Robert T Hamilton

Harshadkumar M Shah

Jeffrey Jacob Cernohous

Hugh West

Charles E Miller

David G Marsh

David E Fish

David J O'Callaghan

Christopher A Mann

Neil R Granlund

Roger O Campbell

Anthony Parrish

Neil R Ganlund

Zeecha L Brooks

Kaaren K Haynes

A particle or particles of cellulosic wood pulp fibers having a top and bottom face and a hexagonal perimeter, and methods of using it.

Meterable fibrous material

A composition comprising 10 to 50 wt % wood pulp fiber and 45 to 85 wt % thermoplastic polymer wherein the average dispersion of the fibers within the thermoplastic polymer composition is equal to or greater than 90% as determined by the Dispersion Test. The pulp can be bleached chemical wood pulp fiber.

Composite polymer

A composition comprising 65 to 90 weight percent kraft chemical wood pulp fibers and a thermoplastic polymer and a method of making the composition.

Polymeric composites

Meterable fiberous material

A building material product comprising a cementitious binder, an aggregate and cellulose reinforcing fibers wherein the cellulose reinforcing fibers have been treated with cationic or nonionic oil. The resulting fiber when included in a fiber cement composite results in improved deflection of the composite at peak loading as well as improved impact strength while maintaining overall board strength.

Fiber cement board with modified fiber

A building material product comprising a cementitious binder, an aggregate and cellulose reinforcing fibers wherein the cellulose reinforcing fibers have been treated with oil which is bound to the fiber by a retention aid. The resulting fiber when included in a fiber cement composite results in improved deflection of the composite at peak loading as well as improved impact strength while maintaining overall board strength.

A method of making bleached mechanical pulps is disclosed for pulping mills having a primary and a secondary refiner. A first step is to provide cellulosic materials, such as wood chips to refine into the pulp; the wood chips have an initial brightness level. A second step is to provide a bleaching liquor to the refining system of the pulp mill, wherein the liquor comprises an amount of hydrogen peroxide and an amount of alkali having greater than 0% to 100% magnesium hydroxide or soda ash or a combination thereof. A third step is to hold the pulp with the bleaching liquor at a temperature in the range of about 85&deg; to about 160&deg; C. and for about 2 to about 180 minutes. The components of the bleach liquor can be added at the first refiner or interstage between refiners.

High temperature peroxide bleaching of mechanical pulps

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Seattle, WA, United States of America

Robert T Hamilton