A polymer composition containing cellulose acetate in combination with one or more plasticizers and one or more biodegradable fillers. The biodegradable fillers can include monosaccharides, polysaccharides, esters thereof, and mixtures thereof. The polymer composition is formulated so as to have properties similar to petroleum-based polymers for producing, for example, single-use biodegradable articles.

A polymer composition containing cellulose acetate in combination with one or more plasticizers and one or more biodegradable fillers. The biodegradable fillers can include monosaccharides, polysaccharides, esters thereof, and mixtures thereof. The polymer composition is formulated so as to have properties similar to petroleum-based polymers for producing, for example, single-use biodegradable articles.

Fibers, fabrics, mattresses and processes of making the fibers generally include a microencapsulated phase change material; and a polymer, wherein the microencapsulated phase change material is greater than 50 percent by weight of the fiber. The process for making the fibers is a dry jet/wet spinning process free of sonication.

Fibers, fabrics, mattresses and processes of making the fibers generally include a microencapsulated phase change material; and a polymer, wherein the microencapsulated phase change material is greater than 50 percent by weight of the fiber. The process for making the fibers is a dry jet/wet spinning process free of sonication.

A plasticizer composition to be used in a transparent resin for optics, wherein the plasticizer composition includes: a composite aggregated particulate material; and a liquid plasticizer having dispersed therein the composite aggregated particulate material. The composite aggregated particulate material includes an inorganic aggregate material being a granular material formed of aggregates of an inorganic particulate material formed of silica having a specific surface area particle diameter of not less than 0.8 nm and not greater than 80 nm, and an organic coating material formed of an organic matter coating a surface of the inorganic aggregate material. A mass of the organic coating material is not less than 0.8% and not greater than 80% with respect to a sum of a mass of the inorganic aggregate material and a mass of the organic coating material. Both mechanical properties and optical properties are realized by mixing the plasticizer composition.

A plasticizer composition to be used in a transparent resin for optics, wherein the plasticizer composition includes: a composite aggregated particulate material; and a liquid plasticizer having dispersed therein the composite aggregated particulate material. The composite aggregated particulate material includes an inorganic aggregate material being a granular material formed of aggregates of an inorganic particulate material formed of silica having a specific surface area particle diameter of not less than 0.8 nm and not greater than 80 nm, and an organic coating material formed of an organic matter coating a surface of the inorganic aggregate material. A mass of the organic coating material is not less than 0.8% and not greater than 80% with respect to a sum of a mass of the inorganic aggregate material and a mass of the organic coating material. Both mechanical properties and optical properties are realized by mixing the plasticizer composition.

A plasticizer composition to be used in a transparent resin for optics, wherein the plasticizer composition includes: a composite aggregated particulate material; and a liquid plasticizer having dispersed therein the composite aggregated particulate material. The composite aggregated particulate material includes an inorganic aggregate material being a granular material formed of aggregates of an inorganic particulate material formed of silica having a specific surface area particle diameter of not less than 0.8 nm and not greater than 80 nm, and an organic coating material formed of an organic matter coating a surface of the inorganic aggregate material. A mass of the organic coating material is not less than 0.8% and not greater than 80% with respect to a sum of a mass of the inorganic aggregate material and a mass of the organic coating material. Both mechanical properties and optical properties are realized by mixing the plasticizer composition.

An object is to provide particles excellent in biodegradability, tactile sensation, and lipophilicity.

Provided are particles containing cellulose acetate, in which the particles have an average particle size of not less than 80 nm and not greater than 100 μm, a sphericity of not less than 0.7 and not greater than 1.0, a degree of surface smoothness of not less than 80% and not greater than 100%, and a surface contact angle with water of not less than 100°; and a total degree of acetyl substitution of the cellulose acetate is not less than 0.7 and not greater than 2.9.

An object is to provide particles excellent in biodegradability, tactile sensation, and lipophilicity.

Provided are particles containing cellulose acetate, in which the particles have an average particle size of not less than 80 nm and not greater than 100 μm, a sphericity of not less than 0.7 and not greater than 1.0, a degree of surface smoothness of not less than 80% and not greater than 100%, and a surface contact angle with water of not less than 100°; and a total degree of acetyl substitution of the cellulose acetate is not less than 0.7 and not greater than 2.9.

The present invention relates to a biodegradable polyester resin, in which the first repeat unit comprising a first diol residue and an aromatic dicarboxylic acid residue and the second repeat unit comprising a second diol residue and an aliphatic dicarboxylic acid residue satisfy a ratio of the number of repeat units in a specific range, and the softness index of the resin satisfies a specific range, and to a process for preparing the same. Since the biodegradable polyester resin can provide a biodegradable polyester sheet or film that can be simultaneously enhanced in productivity, processability, and moldability and is excellent in tensile strength, tear strength, and friction coefficient and excellent in biodegradability and water degradability, it can be utilized in more diverse fields.