An ink or coating formulation including an energy curable high reactivity heteroatom-containing polycarbonate polyfunctional-vinyl ether molecule of formula (I) or an energy curable high reactivity heteroatom-containing acrylate molecule of formula (II) is provided.

##STR00001##

Compositions and methods for making a composition comprising a polymer and one or more chelators covalently coupled to polymer, wherein the one or more chelators has a benzene ring with more than one hydroxyl group at any position that is free, or a derivative of the chelator, or a salt of the chelator and methods of use.

Compositions and methods for making a composition comprising a polymer and one or more chelators covalently coupled to polymer, wherein the one or more chelators has a benzene ring with more than one hydroxyl group at any position that is free, or a derivative of the chelator, or a salt of the chelator and methods of use.

An iminodiacetic acid type chelate resin which can be easily and efficiently produced and which can efficiently adsorb and separate metal ions; and a method for producing the same are developed. The use of a chelate rein having a carboxymethyl group introduced into primary amino groups of the polyvinylamine crosslinked polymer particles can facilitate the efficient adsorption and separation of metal ions in water. The chelate resin can be obtained by a production method in which an N-vinyl carboxylic acid amide is suspension polymerized with a crosslinkable monomer in salt water in the presence of a dispersant thereby to obtain a polyvinyl carboxylic acid amide crosslinked polymer particles, and the obtained polyvinyl carboxylic acid amide crosslinked polymer is hydrolyzed to thereby introduce a carboxymethyl group into primary amino groups of the polyvinylamine crosslinked polymer particles.

An iminodiacetic acid type chelate resin which can be easily and efficiently produced and which can efficiently adsorb and separate metal ions; and a method for producing the same are developed. The use of a chelate rein having a carboxymethyl group introduced into primary amino groups of the polyvinylamine crosslinked polymer particles can facilitate the efficient adsorption and separation of metal ions in water. The chelate resin can be obtained by a production method in which an N-vinyl carboxylic acid amide is suspension polymerized with a crosslinkable monomer in salt water in the presence of a dispersant thereby to obtain a polyvinyl carboxylic acid amide crosslinked polymer particles, and the obtained polyvinyl carboxylic acid amide crosslinked polymer is hydrolyzed to thereby introduce a carboxymethyl group into primary amino groups of the polyvinylamine crosslinked polymer particles.

Disclosed herein is a process for producing polymers of an N-vinyl carboxamide, including the steps of flowing a reaction mixture containing an aqueous liquid containing at least one polymerisation initiator, N-vinyl carboxamide monomer or a monomer mixture containing N-vinyl carboxamide into a reactor system, and polymerising the monomer or monomer mixture to produce the polymer of a N-vinyl carboxamide. The polymers resulting therefrom may be hydrolysed to provide polymers containing vinyl amine units. Also disclosed herein is an apparatus suitable for producing the polymers.

The present invention relates to an interpenetrating polymer network (IPN) material comprising a copolymer of vinylamine-vinylformamide, and a homo-polymer or a copolymer of at least one monomer selected from acrylamide or derivatives thereof, acrylic acid or derivatives thereof, or a mixture thereof forming the IPN material together with the copolymer of vinylamine-vinyl-formamide. The present invention further relates to a process for producing the IPN material, and to use of the IPN material in paper industry.

The present invention relates to an interpenetrating polymer network (IPN) material comprising a copolymer of vinylamine-vinylformamide, and a homo-polymer or a copolymer of at least one monomer selected from acrylamide or derivatives thereof, acrylic acid or derivatives thereof, or a mixture thereof forming the IPN material together with the copolymer of vinylamine-vinyl-formamide. The present invention further relates to a process for producing the IPN material, and to use of the IPN material in paper industry.

Processes for inhibiting scale produced during wet process phosphoric acid production by adding a scale-inhibiting amount of a reagent having a primary amine-containing polymer to at least one stage of a wet process phosphoric acid production process are provided herein, wherein said primary amine-containing polymer includes one or more organic moieties that reduce the polymer's solubility in an aqueous environment as compared to its native form, thereby reducing or preventing scale in the wet process phosphoric acid production process.

Processes for inhibiting scale produced during wet process phosphoric acid production by adding a scale-inhibiting amount of a reagent having a primary amine-containing polymer to at least one stage of a wet process phosphoric acid production process are provided herein, wherein said primary amine-containing polymer includes one or more organic moieties that reduce the polymer's solubility in an aqueous environment as compared to its native form, thereby reducing or preventing scale in the wet process phosphoric acid production process.