Rohm and Haas Company

Other

Robert David Gleim

Charles Thomas Arkens

Oscar Hsien-Hsiang Hsu

Scott Lind Egolf

Kenneth John Wiesinger

Richard Thomas Gray

Mark P De Grandpre

This invention relates to a method for strengthening a cellulosic substrate by treating the substrate with a formaldehyde-free curable aqueous composition and curing the composition. The cellulosic substrates include, for example, paper oil- and air-filter stock, rayon nonwoven wipes, cellulosic laminating stock, cotton woven fabrics, and wood flakes suitable to be consolidated into flakeboard.

Method for strengthening cellulosic substrates, cellulosic nonwoven wipes, and paper filter stock

This invention relates to a formaldehyde-free curable aqueous composition containing a polyacid, a polyol and a phosphorous-containing accelerator. The composition may be used as a binder for heat resistant nonwovens such as nonwovens composed of fiberglass.

Curable aqueous composition and use as fiberglass nonwoven binder

Curable aqueous composition

Curable aqueous composition and use as fiberglass non woven binder

Method for strengthening cellulosic substrates, celluosic non woven

Method for strengthening cellulosic substrates

This invention relates to a positive photoresist system possessing a high degree of thermal stability. The photoresist system contains a preformed polyglutarimide polymer dissolved in a non-reacting solvent. The positive resist is capable of achieving high resolution images by exposure to a wide range of wavelengths and development using an aqueous base developer. The photoresist system is also suitable for use as a planarizing layer in a multiple layer system.

Positive photoresists containing preformed polyglutarimide polymer

A process for reducing polyacetylene oxidation and embrittlement comprises treating the polyacetylene with a solution of (a) a combination of anthraquinone or an anthraquinone salt, a base and a reducing agent; or (b) pyrogallol; or (c) a hydrosulfite; and mixtures thereof. A process for isomerizing cis-polyacetylene at least partly to trans-polyacetylene comprises treating substantially cis-polyacetylene with a solution of a material which is either (a) a combination of anthraquinone or an anthraquinone salt, a base and a reducing agent; (b) pyrogallol; or (c) a hydrosulfite; and mixtures thereof and wherein the solution is at a temperature of from the freezing point to the boiling point of the solution during the treatment of the cis-polyacetylene and thereafter removing the polyacetylene which has been enriched in the trans form from contact with the solution.

Polyacetylene with pyrogallol or hydrosulfite system

A process for the production of a zero valent metal from an aqueous solution of a salt of the metal comprises contacting the solution with polyacetylene for a period of time sufficient to reduce at least a portion of the metal salt to a zero valent metal while leaving the polyacetylene in a substantially non-doped state. The metal salt has a reduction potential of about +0.5V or greater.

Zero valent metal recovery with polyacetylene

A process for reducing polyacetylene oxidation and embrittlement comprises treating the polyacetylene with a solution of (a) a combination of anthraquinone or an anthraquinone salt, a base and a reducing agent; or (b) pyrogallol; or (c) a hydrosulfiprocess for isomerizing cis-polyacetylene at least partly to trans-polyacetylene comprises treating substantially cis-polyacetylene with a solution of a material which is either (a) a combination of anthraquinone or an anthraquinone salt, a base and a reducing agent; (b) pyrogallol; or (c) a hydrosulfite; and mixtures thereof and wherein the solution is at a temperature of from the freezing point to the boiling point of the solution during the treatment of the cis-polyacetylene and thereafter removing the polyacetylene which has been enriched in the trans form from contact with the solution.

Growing community of inventors

New Hope, PA, United States of America

Robert David Gleim