A composition including at least one polyhydroxyalkanoate (PHA) having saturated side chains dissolved in at least one aromatic solvent between 50 g/1 and 200 g/l and preferably between 80 g/l and 180 g/l. The at least one PHA has a weight-average molecular weight (M.sub.w) not greater than 250,000 Da and preferably not greater than 150,000 Da. This composition is particularly suitable as a binder for coating products. The composition can be produced by mixing the PHA with the aromatic organic solvent and heating the mixture at a temperature close to the PHA melting temperature, maintaining the mixture under stirring until complete dissolution of the polymer. Alternatively, the composition can be produced by dissolution of the PHA in a non-aromatic organic solvent having low boiling temperature where the PHA is highly soluble, subsequent addition of the aromatic organic solvent and subsequent removal of the non-aromatic organic solvent by fractional distillation.

The invention relates to a composition and method for producing a solid extracting agent for extraction of scandium from sulfuric acid solutions.

There is provided a solid extracting agent (Solex) for extraction of scandium from scandium-containing solutions comprising a styrene-divinylbenzene matrix with di-(2-ethylhexyl) phosphoric acid. The extracting agent further comprises tri-n-octylphosphine oxide, tributyl phosphate, isododecane, in the following ratio of components, wt. %: di-(2-ethylhexyl) phosphoric acid 32.0-37.5, tri-n-octylphosphine oxide 4.2-8.0, tributyl phosphate 0.8-1.7, isododecane 16.7-20.0, the remainder styrene-divinylbenzene, with the styrene/divinylbenzene ratio in the matrix equal to 75-80 to 20-25 wt. %. There is also provided a method of producing the Solex. The technical result is the production of a scandium-selective Solex with a high dynamic exchange capacity.

Disclosed herein are various cable gel seal arrangements and thermoplastic gels useful therein. The thermoplastic gels are prepared from a composition including a styrene triblock copolymer, a styrene diblock copolymer, an oil extender, and an additive selected from poly(2,6-dimethyl-1,4-phenylene oxide), a C9 resin, poly(alpha-methylstyrene), a coumarone-indene resin, and combinations thereof, wherein the additive has a T.sub.g from about 95 C. to about 200 C. The thermoplastic gels advantageously exhibit low compression set.

An inverse emulsion copolymer composition comprises (A) an aqueous phase comprising a cross-linked hydrophilic polyelectrolyte copolymer (A) obtained by the free radical copolymerisation of: (i) at least one anionic ethylenically unsaturated monomer bearing a negatively charged group and one polymerisable CC double bond, or at least one cationic ethylenically unsaturated monomer bearing a positively charged group and one polymerisable CC double bond, and (ii) at least one non-ionic ethylenically unsaturated cross-linking monomer bearing at least two polymerisable CC double bonds, and (iii) optionally, one or more hydrophilic non-ionic ethylenically unsaturated monomers bearing one polymerisable CC double bond, (B) an oil phase comprising a carrier oil (C), (D) (i) at least one water-in-oil emulsifying surfactant, and (D) (ii) at least one oil-in-water emulsifying surfactant; characterised in that the carrier oil component (C) of the oil phase comprises from 75% to 100%, by weight of the said carrier oil component (C), of farnesane (2, 6, 10-trimethyldodecane). The compositions are effective for use as thickeners for thickening aqueous solutions, including solutions which contain dissolved salts. The compositions also show excellent thickening in acidic solutions than counterpart compositions containing paraffinic oils.

Green, fast and easy evaporating organic solvent for use as a lubricant in the processing of polytetrafluoroethylene (PTFE) and expanded polytetrafluoroethylene (ePTFE) products and processes of using the solvents to fabricate the products are disclosed herein. The products can be used in the field of bio- and medical applications, such as for use in vascular grafts, cardiovascular and soft tissue patches, facial implants, surgical sutures, and endovascular prosthesis, and for any products known in the aerospace, electronics, fabrics, filtration, industrial and sealant arts.

A gel composition is a gel composition containing a base oil (a) and a hydrogenated block copolymer (b), wherein the hydrogenated block copolymer (b) is a hydrogenated product of a diblock copolymer composed of a polymer block (A) consisting mainly of a structural unit derived from an aromatic vinyl compound and a polymer block (B) consisting mainly of a structural unit derived from a conjugated diene compound, the content of the polymer block (A) in the hydrogenated block copolymer (b) being 38.0 to 45.0% by mass; and the content of the hydrogenated block copolymer (b) in the gel composition is 1 to 20 parts by mass based on 100 parts by mass of the total amount of the base oil (a) and the hydrogenated block copolymer (b)

A solvent composition includes an organic solvent including one or more organic solvents (A) and one or more organic solvents (B), and one or more types of core-shell polymer particles each comprising a core layer and a shell layer. The organic sol vents (A) have a polar teen p of a Hansen solubility parameter of less than 11 and a hydrogen bond term h of less than 10, and the organic solvents (B) satisfy at least one of 11 or more of the polar term p or 10 or more of the hydrogen bond term h. A weight ratio of (A) to (B) ranges from 15:85 to 95:5. Based on a total weight of the solvent composition, a content of the core-shell polymer particles is 20 to 40% by weight and a water content is 1% by weight or less.

The disclosure provides redispersible CNC. The CNC disclosed herein is redispersible in non-polar and polar organic solvents as well as polar and non-polar polymers such as polyethylene or polypropylene. The disclosure surprisingly also provides redispersible CNC bearing improved redispersion in aqueous systems and most particularly in high ionic strength aqueous systems which usually require significant mixing energy to achieve dispersion.

Solid gel beads formed from a gel product of a 5 carbon to 60 carbon alkane phase change material, 5 carbon to 60 carbon alkene phase change material, or a combination thereof and a styrene-based polymer are homogeneous, has an uneven exterior surface, and a major axis length in a range of 1000 m to 100 mm. Methods for making the solid gel bead include providing water having a preselected temperature based on a linear relationship to the melting point of a phase change material composition, mixing the phase change material composition with the styrene-based polymer at or below the preselected temperature with stirring to form a pulp, and mixing the pulp into the water with turbulent mixing while maintaining the temperature of the mixture at the preselected temperature.

Provided is a method of producing a composite resin material that has excellent shapeability and enables supply of a shaped product having good properties. The method of producing a composite resin material includes: a mixing step of mixing a fluororesin, fibrous carbon nanostructures, and a dispersion medium to obtain a slurry; and a formation step of removing the dispersion medium from the slurry and forming a particulate composite resin material. The particulate composite resin material has a D50 diameter of at least 20 m and not more than 500 m and a D90 diameter/D10 diameter value of at least 1.2 and not more than 15. The D10 diameter, D50 diameter, and D90 diameter are particle diameters respectively corresponding to cumulative volumes of 10%, 50%, and 90% calculated from a small particle end of a particle diameter distribution of the particulate composite resin material.