A photocurable resin composition which can improve adhesion between light transmitting members. The photocurable resin composition contains a monofunctional acrylic monomer having a heating residue of 85.0% or less after being heated at 60° C. for 30 minutes, a crosslinking agent, a photopolymerization initiator, and a softening agent composed of at least one of plasticizer and tackifier, and the heating residue after being heated at 60° C. for 30 minutes is less than 96.0%.

A photocurable resin composition which can improve adhesion between light transmitting members. The photocurable resin composition contains a monofunctional acrylic monomer having a heating residue of 85.0% or less after being heated at 60° C. for 30 minutes, a crosslinking agent, a photopolymerization initiator, and a softening agent composed of at least one of plasticizer and tackifier, and the heating residue after being heated at 60° C. for 30 minutes is less than 96.0%.

A method for manufacturing a polymer emulsion includes the following steps. A mixture is heated to a first temperature less than or equal to about 40° C. The mixture including about 100 to about 500 parts by weight of a monomer and about 0.5 to about 95 parts by weight of a first cross-linking agent, in which the monomer has a structure of formula (I): ##STR00001##
and R.sub.1, R.sub.2, and R.sub.3 represent H or C1-C4 alkyl group, respectively. About 0.005 to about 5 parts by weight of a first initiator is added. About 0.003 to about 5 parts by weight of a reducing agent is added to form an intermediate product. The intermediate product is heated to a second temperature less than or equal to about 92° C.

A method for manufacturing a polymer emulsion includes the following steps. A mixture is heated to a first temperature less than or equal to about 40° C. The mixture including about 100 to about 500 parts by weight of a monomer and about 0.5 to about 95 parts by weight of a first cross-linking agent, in which the monomer has a structure of formula (I): ##STR00001##
and R.sub.1, R.sub.2, and R.sub.3 represent H or C1-C4 alkyl group, respectively. About 0.005 to about 5 parts by weight of a first initiator is added. About 0.003 to about 5 parts by weight of a reducing agent is added to form an intermediate product. The intermediate product is heated to a second temperature less than or equal to about 92° C.

The object is achieved by an organic-inorganic composite dispersion liquid comprising organic-inorganic composite particles (X) which are formed of a polymer (P) of a monomer including a (meth)acrylamide-based monomer (a) and one or more inorganic materials (B) selected from a water-swellable clay mineral or silica in a three-dimensional network and are dispersed in an aqueous medium (C), in which an average particle diameter of the organic-inorganic composite particles (X) is 100 nm or more.

The object is achieved by an organic-inorganic composite dispersion liquid comprising organic-inorganic composite particles (X) which are formed of a polymer (P) of a monomer including a (meth)acrylamide-based monomer (a) and one or more inorganic materials (B) selected from a water-swellable clay mineral or silica in a three-dimensional network and are dispersed in an aqueous medium (C), in which an average particle diameter of the organic-inorganic composite particles (X) is 100 nm or more.

Provided is a process for producing aqueous acrylamide solution by hydrating acrylonitrile in an aqueous solution in the presence of a biocatalyst, wherein the method comprises in-line monitoring of the acrylamide synthesis reaction by FTNIR spectroscopy. Also provided are an aqueous acrylamide solution obtainable by said process and use thereof for the synthesis of polyacrylamide.

Provided is a process for producing aqueous acrylamide solution by hydrating acrylonitrile in an aqueous solution in the presence of a biocatalyst, wherein the method comprises in-line monitoring of the acrylamide synthesis reaction by FTNIR spectroscopy. Also provided are an aqueous acrylamide solution obtainable by said process and use thereof for the synthesis of polyacrylamide.

In various embodiments, a water-based binder solution for use in additive manufacturing, includes a thermoplastic binder. The thermoplastic binder includes a first polymer strand having a weight average molecular weight (Mw) of from greater than or equal to 5,000 g/mol to less than or equal to 15,000 g/mol, a second polymer strand having a weight average molecular weight of from greater than or equal to 10,000 g/mol to less than or equal to 50,000 g/mol, and a third polymer strand having a weight average molecular weight of from greater than or equal to 1,000 g/mol to less than or equal to 5,000 g/mol. The binder solution further comprises from greater than or equal to 0.1 wt % to less than or equal to 5 wt % of a non-aqueous solvent having a boiling point of greater than 100° C.

In a method for preparing glyoxylated polyacrylamide, in which an aqueous solution of polyacrylamide is supplemented with ethanediol (glyoxal) under stirring by means of a circulation pump, the reaction is started by the addition of a base, at a basic pH value above 8, and is allowed to react under stirring and/or circulating, whereupon the reaction is stopped by the addition of an acid under stirring and/or circulating after completion of a predetermined reaction time, wherein the method is performed as a discontinuous method in which the quantitative reaction of ethanediol with an excess amount of polyacrylamide in an aqueous basic medium is controlled and/or regulated by at least one, of the following factors:

a) turbidity measurement
b) pH adaptation as a function of the temperature
c) pH adaptation as a function of the reaction time
d) drop of pH the value, or
e) current consumption of the circulation pump.