Now showing items 1-4 of 4
Reissert compound of bisbenzimidazole
(United States Patent and Trademark Office, 1990-12-11)
A Reissert compound of bisbenzimidazole can be formed by first reacting benzimidazole with an aliphatic diacid chloride to form bisbenzimidazole and then reacting the bisbenzimidazole with an aliphatic acid chloride and ...
Novel phosphorus containing epoxy networks
(United States Patent and Trademark Office, 1990-11-27)
Epoxy resins can be cured or crosslinked with triphenyl phosphine oxide compounds having epoxy-reactive (active hydrogen) substituents either alone or in combination with amine-terminated polyarylene ethers (e.g., ...
Process for the hydroformulation of olefinically unsaturated organic reactants using a supported aqueous phase catalyst
(United States Patent and Trademark Office, 1990-08-07)
A process for the hydroformylation of alkenes and other olefinically unsaturated reactants by reaction with carbon monoxide and hydrogen in the presence of a heterogeneous catalyst comprising a solid surface having immobilized ...
Preparation of open chain poly(reissert compounds)
(United States Patent and Trademark Office, 1990-05-29)
An open chain poly Reissert can be formed by the initial reaction of an aromatic dialdehyde (e.g., terephthaldicaboxaldehyde) and primary amine (e.g., methylamine) to form a reaction product which is then reacted with an ...