The present invention aims to provide an aqueous dispersion of α-olefin-(meth)acrylic acid ester-based rubber particles having better storage stability and ensuring better oil resistance of a molded body. The present invention also aims to provide a method for producing the aqueous dispersion, a molded body and a resorcin-formalin-latex adhesive each produced using the aqueous dispersion. The present invention relates to an aqueous dispersion of α-olefin-(meth)acrylic acid ester-based rubber particles including: an aqueous medium, a surfactant; and α-olefin-(meth)acrylic acid ester-based rubber particles, the aqueous dispersion containing the surfactant in an amount of 1 to 15 parts by mass relative to 100 parts by mass of the α-olefin-(meth)acrylic acid ester-based rubber particles.

The present invention provides for concentrated aqueous silk fibroin solutions and an all-aqueous mode for preparation of concentrated aqueous fibroin solutions that avoids the use of organic solvents, direct additives, or harsh chemicals. The invention further provides for the use of these solutions in production of materials, e.g., fibers, films, foams, meshes, scaffolds and hydrogels.

The present invention provides for concentrated aqueous silk fibroin solutions and an all-aqueous mode for preparation of concentrated aqueous fibroin solutions that avoids the use of organic solvents, direct additives, or harsh chemicals. The invention further provides for the use of these solutions in production of materials, e.g., fibers, films, foams, meshes, scaffolds and hydrogels.

Provided is an aqueous dispersion composition that comprises a carboxyl-group-containing water-soluble copolymer in a relatively high concentration, but has intact handleability. More specifically, provided is, for example, an aqueous dispersion composition comprising 4 to 8 mass % of a copolymer obtained by polymerization in the presence of a nonionic surfactant with one or more polyoxyethylene chains, the copolymer being at least one member selected from the group consisting of

(1) copolymers obtained by polymerizing the following (i) and (ii),
(2) copolymers obtained by polymerizing the following (i) and (iii), and
(3) copolymers obtained by polymerizing the following (i), (ii), and (iii):
(i) 100 parts by mass of a (meth)acrylic acid;
(ii) 0.001 to 1 part by mass of a compound with two or more ethylenically unsaturated groups; and
(iii) 0.5 to 5 parts by mass of a (meth)acrylic acid alkyl ester having an alkyl group with 10 to 30 carbon atoms.

Provided is an aqueous dispersion composition that comprises a carboxyl-group-containing water-soluble copolymer in a relatively high concentration, but has intact handleability. More specifically, provided is, for example, an aqueous dispersion composition comprising 4 to 8 mass % of a copolymer obtained by polymerization in the presence of a nonionic surfactant with one or more polyoxyethylene chains, the copolymer being at least one member selected from the group consisting of

(1) copolymers obtained by polymerizing the following (i) and (ii),
(2) copolymers obtained by polymerizing the following (i) and (iii), and
(3) copolymers obtained by polymerizing the following (i), (ii), and (iii):
(i) 100 parts by mass of a (meth)acrylic acid;
(ii) 0.001 to 1 part by mass of a compound with two or more ethylenically unsaturated groups; and
(iii) 0.5 to 5 parts by mass of a (meth)acrylic acid alkyl ester having an alkyl group with 10 to 30 carbon atoms.

The present invention relates to a production method of polyalkylene carbonate particles capable of precipitating and separating resin particles from a polyalkylene carbonate suspension obtained through polymerization of an epoxide and carbon dioxide. According to the present invention, the production method is capable of obtaining a polyalkylene carbonate resin having excellent workability with a high yield and a low energy cost while reducing a scale of a facility, a processing time, and a wastewater amount, as compared to conventional methods such as a flash separation method.

The present invention relates to a production method of polyalkylene carbonate particles capable of precipitating and separating resin particles from a polyalkylene carbonate suspension obtained through polymerization of an epoxide and carbon dioxide. According to the present invention, the production method is capable of obtaining a polyalkylene carbonate resin having excellent workability with a high yield and a low energy cost while reducing a scale of a facility, a processing time, and a wastewater amount, as compared to conventional methods such as a flash separation method.

Nanoemulsions are prepared by: a) solubilizing a silicone resin in an organic solvent system to yield a silicone resin solution concentration of 80% or less, wherein the organic solvent system comprises diethyleneglycol monobutyl ether and at least one additional solvent; b) mixing the silicone resin solution from a) with an aminosiloxane polymer to obtain an aminosiloxane polymer: silicone resin mixture; c) allowing the resin mixture to age for at least about 6 hours at ambient temperature; d) adding the resin mixture to a vessel; e) optionally adding with agitation an additional organic solvent to the resin mixture; f) mixing until homogenous; g) adding a protonating agent; h) adding an aqueous carrier in an amount to produce a desired concentration of emulsion.

Nanoemulsions are prepared by: a) solubilizing a silicone resin in an organic solvent system to yield a silicone resin solution concentration of 80% or less, wherein the organic solvent system comprises diethyleneglycol monobutyl ether and at least one additional solvent; b) mixing the silicone resin solution from a) with an aminosiloxane polymer to obtain an aminosiloxane polymer: silicone resin mixture; c) allowing the resin mixture to age for at least about 6 hours at ambient temperature; d) adding the resin mixture to a vessel; e) optionally adding with agitation an additional organic solvent to the resin mixture; f) mixing until homogenous; g) adding a protonating agent; h) adding an aqueous carrier in an amount to produce a desired concentration of emulsion.

A self-lubricating composite material is disclosed. The self-lubricating composite material can include discontinuous polymer fiber segments dispersed within a woven matrix of semi-continuous thermoplastic fiber. The woven matrix can be embedded within a thermosetting resin. Also disclosed are methods of manufacturing the self-lubricating composite material.