Ciba-Geigy Corporation

Ciba-Geigy Ag

Hans Batzer

Daniel Porret

Jurgen Habermeier

Joel Sinnreich

Juergen Habermeier

Friedrich Lohse

Rolf Schmid

Willy Fatzer

Lothar Buxbaum

Gerrit Knobloch

Juerger Habermeier

Use of succinosuccinic acid diesters of the formula ##STR1## in which R is an alkyl, alkenyl or cycloalkyl having 4 to 24 C atoms, either dissolved in a water-immiscible organic solvent, or at elevated temperature in the form of their melts, as cation-selective liquid membranes.

Separation of polyvalent cations by transport through liquid membrane

Cation-selective liquid membranes and their use

Novel photo-crosslinkable polymers are obtained by reacting, and polycondensing, bis-(hydroxyalkyl) succinylosuccinates or bis-(hydroxycycloalkyl) succinylosuccinates with maleic anhydride, maleinimid or N-methylmaleinimid in a molar ratio of 1:1 to 1:2. The novel polymers are useful as photoresists, and the films consisting of the crosslinked polymers are useful as solvent-resistant membranes for reverse osmosis.

Photocurable polymers obtained from succinylosuccinic acid and maleic

Polymers from the group consisting of cellulose and its ester and ether derivatives, of polyvinyl alcohol and its ester derivatives, copolymers with vinyl esters and homopolymers and copolymers of acrylates and methacrylates are modified with monofunctional or difunctional cyclic .beta.-ketonic acids or their esters, in particular with succinylsuccinic acid or its ester derivatives. The modified polymers are particularly suitable for obtaining semi-permeable membranes for osmotic separation methods.

Semipermeable membranes from modified polymers

Polymers from the group consisting of cellulose and its ester and ether derivatives, of polyvinyl alcohol and its ester derivatives, polymers with vinyl esters and homopolymers and copolymers of acrylates and methacrylates are modified with monofunctional or difunctional cyclic .beta.-ketonic acids or their esters, in particular with succinylsuccinic acid or its ester derivatives. The modified polymers are particularly suitable for obtaining semi-permeable membranes for osmotic separation methods.

Modified polymers

The invention provides nickel and cobalt chelate complexes of a nickel or cobalt salt and a succinosuccinate of the formula I ##STR1## wherein R represents a substituted or unsubstituted hydrocarbon radical of aliphatic or aromatic character. These complexes are excellent adhesion promoters for vulcanized rubber on metal surfaces.

Nickel and cobalt chelate complexes and their use

New dialcohols of mononuclear, five-membered or six-membered, unsubstituted or substituted N-heterocyclic compounds which contain two NH-groups in the molecule, by reaction of mononuclear, five-membered or six-membered, unsubstituted or substituted N-heterocyclic compounds, for example hydantoin, barbituric acid, uracil, dihydrouracil, parabanic acid and the corresponding derivatives, with ethylene oxide or propylene oxide to give dialcohols. These diols are useful as intermediates for the preparation of polymers, such as polyesters or polyurethanes, or of epoxy resins.

Dialcohols

Linear thermoplastic polyesters obtained from (a) dicarboxylic acids which contain NH groups, (b) if desired, terephthalic acid and/or isophthalic acid, (c) if desired, diols containing aliphatic diol groups and (d) .beta.-hydroxyalkylated bisphenols are materials from which it is possible to produce shaped articles which have good properties, for example good resistance to stress cracking and stability to thermooxidative degradation, and also a low absorption of water.

Polyesters prepared from NH containing carboxylic acids

New mono- or dialcohols of mononuclear, five-membered or six-membered, unsubstituted or substituted N-heterocyclic compounds which contain two NH-groups in the molecule, by reaction of mononuclear, five-membered or six-membered, unsubstituted or substituted N-heterocyclic compounds, for example hydantoin, barbituric acid, uracil, dihydrouracil, parabanic acid and the corresponding derivatives, with butene oxid, 1,2-cyclopentene oxide or 1,2-cyclohexene oxide to give monoalcohols or dialcohols. These compounds are useful as intermediates for the preparation of diglycidyl compounds as set forth in German Offenlegungsschrift No. 2,104,259.

Five- or six-membered heterocyclic mono -and dialcohols

The polyglycidyl compounds according to the invention can be manufactured by reacting epihalogenohydrin with compounds of the formula IV ##STR1## or the formula V ##STR2## in which (1) n denotes 2, 3 or 4, (2) A represents a 2-valent, 3-valent or 4-valent organic radical which either contains a N-heterocyclic or cycloaliphatic ring or 2 N-heterocyclic rings or 2 phenylene rings, (3) either D denotes the --CH.sub.2.O.CO-- radical and m denotes the number 1, or D denotes the radical ##STR3## and m denotes O, and (4) R.sup.1 represents a divalent radical, which contains at least one hydantoin ring or uracil ring. During the reaction hydrogen halide splits off. From curable mixtures containing polyglycidyl compounds according to the invention and a curing agent such as hexahydrophthalic anhydride or phthalic anhydride are obtained products with good mechanical and electrical properties.

Polyglycidyl compounds containing N-heterocyclic structure

New mono- and dialcohols of binuclear, five-membered or six-membered, unsubstituted or substituted N-heterocyclic compounds, which contain two NH groups in the molecule, by reaction of binuclear, five-membered or six-membered, unsubstituted or substituted, N-heterocyclic compounds, such as bis-(hydantoin) or bis-(dihydrouracil) compounds, for example 1,1'-methylene-bis-(5,5-dimethylhydantoin), bis-(5,5-dimethylhydantoinyl-3)-methane or 1,1'-methylene-bis-(5,6-dihydrouracil) with ethylene oxide, for example ethylene oxide or propylene oxide, to give the corresponding monohydroxy or dihydroxy compounds. These compounds are useful as intermediates for forming diglycidyl ether resins as described in German Offenlegungsschrift No. 2,003,016.

Mono- and dialcohols of five or six membered N-heterocyclic compounds,

Unsaturated, linear polyesters having flame-retarding properties are obtained by polycondensing unsaturated dicarboxylic acids, optionally mixed with aromatic dicarboxylic acids and aliphatic diols, with brominated and/or chlorinated 1,3-di-(hydroxyalkyl)-benzimidazolone compounds. The new, unsaturated polyesters can be polymerized easily, also when mixed with other polymerizable monomers, and give moulding materials having flame-retarding properties.

Unsaturated, linear polyester compositions

The polyglycidyl compounds according to the invention can be manufactured by reacting epihalogenohydrin with compounds of the formula IV ##STR1## or the formula V ##STR2## in which 1. N DENOTES 2, 3 OR 4,

The polyglycidyl compounds according to the invention can be manufactured by reacting epihalogenohydrin with compounds of the formula IV ##STR1## or the formula V ##STR2## in which 1.) n denotes 2, 3 or 4, 2.) A represents a 2-valent, 3-valent or 4-valent organic radical which either contains a N-heterocyclic or cycloaliphatic ring or 2 N-heterocyclic rings or 2 phenylene rings, 3.) either B denotes the --CH.sub.2.O.CO-- radical and m denotes the number 1, or B denotes the radical ##STR3## and m denotes 0, and 4.) R.sup.1 represents a divalent radical, which contains at least one hydrantoin ring or uracil ring. During the reaction hydrogen halide splits off. From curable mixtures containing polyglycidyl compounds according to the invention and a curing agent such as hexahydrophthalic anhydride or phthalic anhydride are obtained products with good mechanical and electrical properties.

Growing community of inventors

Arlesheim, Switzerland

Hans Batzer