The present invention provides a novel hydrogel, methods of its use, and methods for producing the hydrogel.

Disclosed are polymers, methods of making polymers, and compositions, focused on cross-linking heterocycles comprising a moiety of Formula I with thiols and thiolates.

Disclosed are polymers, methods of making polymers, and compositions, focused on cross-linking heterocycles comprising a moiety of Formula I with thiols and thiolates.

An embodiment of the present invention provides a coating composition comprising a composite in which a dissociated natural polymer compound is bound onto at least a portion of the surface of acrylic polymer particles.

An embodiment of the present invention provides a coating composition comprising a composite in which a dissociated natural polymer compound is bound onto at least a portion of the surface of acrylic polymer particles.

A thermogelling graft copolymer is provided. The copolymer is obtainable by (a) polymerizing, in a first step, an activated lignin-based polymer with N-isopropylacrylamide (NIPAAm) to form a lignin/poly(N-isopropylacrylamide) (PNIPAAm) graft copolymer, and (b) polymerizing, in a second step, the lignin/poly(N-isopropylacrylamide) (PNIPAAm) graft copolymer with a monomer mixture comprising (i) poly(ethylene glycol) (meth)acrylate and/or a C.sub.1-10 alkyl ether thereof, and (ii) poly(propylene glycol) (meth)acrylate and/or a C.sub.1-10 alkyl ether thereof, to obtain a lignin-poly(N-isopropylacrylamide)-block-poly(ethylene glycol)/poly(propylene glycol) graft copolymer. Method of preparing the thermogelling graft copolymer is also provided.

A thermogelling graft copolymer is provided. The copolymer is obtainable by (a) polymerizing, in a first step, an activated lignin-based polymer with N-isopropylacrylamide (NIPAAm) to form a lignin/poly(N-isopropylacrylamide) (PNIPAAm) graft copolymer, and (b) polymerizing, in a second step, the lignin/poly(N-isopropylacrylamide) (PNIPAAm) graft copolymer with a monomer mixture comprising (i) poly(ethylene glycol) (meth)acrylate and/or a C.sub.1-10 alkyl ether thereof, and (ii) poly(propylene glycol) (meth)acrylate and/or a C.sub.1-10 alkyl ether thereof, to obtain a lignin-poly(N-isopropylacrylamide)-block-poly(ethylene glycol)/poly(propylene glycol) graft copolymer. Method of preparing the thermogelling graft copolymer is also provided.

This invention discloses a radiation curable barrier coating composition for application to paper or paperboard substrates that can be applied using a conventional flexographic printing process. The coating composition includes one or more hydrophobic cycloaliphatic radiation curable monomers, one or more alcohol-functional waxes or sterols, and one or more other hydrophobic wax materials. The incorporation of these materials together lowers the MVTR of the coating compared to other radiation curable compositions while also generating improved, higher gloss. This invention also discloses a method to manufacture the coating composition and a preferred method to print the coating composition.

This invention discloses a radiation curable barrier coating composition for application to paper or paperboard substrates that can be applied using a conventional flexographic printing process. The coating composition includes one or more hydrophobic cycloaliphatic radiation curable monomers, one or more alcohol-functional waxes or sterols, and one or more other hydrophobic wax materials. The incorporation of these materials together lowers the MVTR of the coating compared to other radiation curable compositions while also generating improved, higher gloss. This invention also discloses a method to manufacture the coating composition and a preferred method to print the coating composition.

A polymer is obtainable by a method comprising the reaction of: a) at least one rosin acid containing at least two conjugated carbon-carbon double bonds, b) at least one polydienophile compound comprising two or more carbon-carbon double bonds, c) at least one compound selected from the group consisting of polyhydroxyl compounds c.sub.1), polyepoxy compounds c.sub.2), polyamine compounds c.sub.3), polythiol compounds c.sub.4) and arbitrary combinations of two or more of the aforementioned compounds and d) at least one photoinitiator d.sub.1) and/or at least one co-initiator d.sub.2), wherein the at least one photoinitiator d.sub.1) and/or the at least one co-initiator d.sub.2) comprises at least one functional group being selected from the group of ester groups, carboxylic acid groups, carboxylic acid chloride groups, carboxylic acid anhydride groups, hydroxyl groups, thiol groups, primary amine groups, halogen groups, epoxy groups, isocyanate groups, isothiocyanate groups and arbitrary combinations of two or more of the aforementioned groups.