Amine-functionalized saccharide polymers, including oligosaccharides and polysaccharides, may be effective for promoting clay stabilization in subterranean formations. Oxidative synthesis of amine-functionalized saccharide polymers using sodium hypochlorite pentahydrate as an oxidation reagent may afford a different distribution and type of sites of oxidative opening as compared to other types of oxidation reagents. Amine-functionalized saccharide polymers may be prepared by exposing a saccharide polymer comprising a trans-vicinal diol to an oxidation reagent comprising sodium hypochlorite pentahydrate, reacting the trans-vicinal diol to form a site of oxidative opening bearing at least one aldehyde, exposing the at least one aldehyde to an amine to form an imine intermediate at the site of oxidative opening, and reducing the imine intermediate into a secondary or tertiary amine at the site of oxidative opening.

A biodegradable cellulose fiber-based substrate, at least one side of which is coated with a release coating including: a) at least one water-soluble polymer (WSP) containing hydroxyl groups, and b) at least one lactone substituted with at least one linear or branched and/or cyclic C.sub.8-C.sub.30 hydrocarbon chain which may contain heteroatoms. The biodegradable substrate is certified biodegradable in accordance with EN 13432. A method of production thereof is also disclosed.

A biodegradable cellulose fiber-based substrate, at least one side of which is coated with a release coating including: a) at least one water-soluble polymer (WSP) containing hydroxyl groups, and b) at least one lactone substituted with at least one linear or branched and/or cyclic C.sub.8-C.sub.30 hydrocarbon chain which may contain heteroatoms. The biodegradable substrate is certified biodegradable in accordance with EN 13432. A method of production thereof is also disclosed.

A cellulose fiber-based substrate, at least one side of which is coated with an aqueous mixture composed of: a) at least one water-soluble polymer (WSP) containing hydroxyl groups, b) at least one lactone substituted with at least one linear or branched and/or cyclic C.sub.8-C.sub.30 hydrocarbon chain which may contain heteroatoms, c)at least one crosslinking agent. A method of production and use thereof.

Provided are a plant-derived soft capsule shell having high shell sheet strength, good adhesive property, and good shell performance, and a soft capsule.

A soft capsule shell comprising: (A) iota carrageenan; and (B) waxy corn starch having undergone a heat-moisture treatment in the presence of a salt, the soft capsule shell having a content mass ratio [(A)/(B)] of the component (A) to the component (B) of 0.4 to 3, the soft capsule shell having a content mass ratio [carrageenan/starch] of carrageenan including the component (A) to starch including the component (B) of 0.29 to 1.

Provided are a plant-derived soft capsule shell having high shell sheet strength, good adhesive property, and good shell performance, and a soft capsule.

A soft capsule shell comprising: (A) iota carrageenan; and (B) waxy corn starch having undergone a heat-moisture treatment in the presence of a salt, the soft capsule shell having a content mass ratio [(A)/(B)] of the component (A) to the component (B) of 0.4 to 3, the soft capsule shell having a content mass ratio [carrageenan/starch] of carrageenan including the component (A) to starch including the component (B) of 0.29 to 1.

A resin composition for optical shaping comprising: an α,β-unsaturated double bond group-containing compound (A) having a ring structure (a) containing a nitrogen atom; a (meth)acrylic acid ester compound (B) having a boiling point of 280° C. or more at normal pressure, having a carbocyclic group, and having no nitrogen-containing heterocyclic group; a photopolymerization initiator (C); and optionally, a polyfunctional polymerizable monomer (E) having a molecular weight of 500 or less and not comprised in the α,β-unsaturated double bond group-containing compound (A) and the (meth)acrylic acid ester compound (B), wherein the content of the polyfunctional polymerizable monomer (E) having a molecular weight of 500 or less is 20 mass % or less relative to the total amount of polymerizable compounds comprised in the resin composition for optical shaping.

A resin composition for optical shaping comprising: an α,β-unsaturated double bond group-containing compound (A) having a ring structure (a) containing a nitrogen atom; a (meth)acrylic acid ester compound (B) having a boiling point of 280° C. or more at normal pressure, having a carbocyclic group, and having no nitrogen-containing heterocyclic group; a photopolymerization initiator (C); and optionally, a polyfunctional polymerizable monomer (E) having a molecular weight of 500 or less and not comprised in the α,β-unsaturated double bond group-containing compound (A) and the (meth)acrylic acid ester compound (B), wherein the content of the polyfunctional polymerizable monomer (E) having a molecular weight of 500 or less is 20 mass % or less relative to the total amount of polymerizable compounds comprised in the resin composition for optical shaping.

The present application discloses dual-function starch-based composite nanoparticles as well as a preparation method and application thereof. The preparation method comprises: hydrolyzing starch to form linear dextrin, grading the linear dextrin by using an alcohol-alcohol gradient precipitation method to obtain linear dextrin having homogeneous molecular weight distribution; oxidizing the linear dextrin by adopting an oxidation system to obtain oxidized dextrin; carrying out complex reaction on the oxidized dextrin and curcumin to form an oxidized dextrin-curcumin complex; and forming an oxidized dextrin-curcumin/chitosan hydrochloride composite nanoparticles from the oxidized dextrin-curcumin complex and chitosan hydrochloride. The aqueous phase solution of the dual-function starch-based composite nanoparticles containing gel polysaccharide is uniformly mixed with primary emulsion, calcium ion induction is carried out on the obtained double emulsion to obtain double-emulsion gel.

The present application discloses dual-function starch-based composite nanoparticles as well as a preparation method and application thereof. The preparation method comprises: hydrolyzing starch to form linear dextrin, grading the linear dextrin by using an alcohol-alcohol gradient precipitation method to obtain linear dextrin having homogeneous molecular weight distribution; oxidizing the linear dextrin by adopting an oxidation system to obtain oxidized dextrin; carrying out complex reaction on the oxidized dextrin and curcumin to form an oxidized dextrin-curcumin complex; and forming an oxidized dextrin-curcumin/chitosan hydrochloride composite nanoparticles from the oxidized dextrin-curcumin complex and chitosan hydrochloride. The aqueous phase solution of the dual-function starch-based composite nanoparticles containing gel polysaccharide is uniformly mixed with primary emulsion, calcium ion induction is carried out on the obtained double emulsion to obtain double-emulsion gel.