A curable composition including a first compound having a group represented by general formula (x) and an epoxy group and having a molecular weight of 1000 or less. In the general formula (x), Rf.sub.1 and Rf.sub.2 each independently represent a fluorine-containing alkyl group.

—C(Rf.sub.1)(Rf.sub.2)—OH  (x)

A method for preparing a durably hydrophilic and uniform-pore ultrafiltration membrane is disclosed herein. Chemical reactions between the functional groups and the active bonds of the molecular chains in the membrane materials are initiated perform the grafting of hydrophilic chains on the polymer chains under conventional dissolution conditions of the polymer membrane material (dissolution with synchronized hydrophilization), so as to realize durable hydrophilization of the membrane materials. The resulting hydrophilized polymer solution (a nascent-state membrane) is introduced into a coagulation bath to initiate a crosslinking reaction among the hydrophilic chains. The resulting crosslinking serves to synergistically regulate subsequent phase separation and membrane formation (phase separation under synergistic crosslinking).

Provided is an elastomer which is suitable for application in actuators or sensors, and which exhibits an appropriately low initial elastic modulus in a low deformation region.

An elastomer composition containing the following components (A) to (D):

component (A): a polyrotaxane;

component (B): a crosslinking agent containing a second linear molecule having a molecular weight of 1,200 to 7,000, and a functional group disposed at both ends of the second linear molecule;

component (C): a double-reactive component having a reactive group at both ends; and

component (D): a single-reactive component having a reactive group at only one end, wherein at least a portion of the functional group in the component (B) is directly or indirectly bonded to the cyclic molecule in the component (A), and the elastomer composition exhibits an initial elastic modulus of 0.6 to 2 MPa.

A liquid color masterbatch composition for fabricating a colored fiber includes 30.0 to 44.4 parts by weight of a colorant, 14.0 to 44.4 parts by weight of a lubricant, and 11.2 to 56.0 parts by weight of a carrier, in which a viscosity of the liquid color masterbatch composition between 13000 cP and 18000 cP.

The present invention relates to a water-repellent film having frost resistance, including a hygroscopic layer provided on or above a substrate, and a water-repellent layer provided on or above the hygroscopic layer, in which the water-repellent layer contains a water-repellent layer substrate and a water-repellent component attached to the water-repellent layer substrate.

An objective of the present invention is to provide a production method that enables PHA (e.g. PHA powder) to be produced with high productivity. The above is achieved by providing: a method for producing a polyhydroxyalkanoate, including the steps of (a) preparing an aqueous suspension that contains a polyhydroxyalkanoate and an alkylene oxide-based dispersing agent and has a pH of not more than 7 and (b) spray-drying the aqueous suspension prepared in the step (a); and the like.

Provided herein according to some embodiments is a dual cure additive manufacturing resin, comprising: (i) a light polymerizable component, (ii) a photoinitiator, (iii) a heat polymerizable component, and (iv) a non-reactive diluent, which resin is useful for the production of three-dimensional objects by additive manufacturing. Methods of using the same are also provided.

A composite material according to the present invention includes a solid portion including inorganic particles and a resin. The composite material has a porous structure including a plurality of voids surrounded by the solid portion. The composite material satisfies (i) and/or (ii). (i) P.sub.2 is 500 or more. (ii) The composite material has a heat conductivity of 0.5 W/(m.Math.K) or more and a thickness of 0.5 mm to 2.5 mm, the void have an average diameter of 50 μm to 1500 μm, and P.sub.3 is 70% to 90%. P.sub.2=the heat conductivity [W/(m.Math.K)] of the composite material×P.sub.3×100/an amount [volume %] of the inorganic particles P.sub.3 [%]=(F.sub.0−F.sub.1)×100/F.sub.0

A water- and oil-proofing composition which can provide an article with high utility oil resistance is provided. A water- and oil-proofing composition comprising a fluorinated polymer comprising units based on the following monomer (a) and units based on the following monomer (b), a fatty acid ester of polyglycerin and an aqueous medium: Monomer (a): a compound represented by CH.sub.2═CH—R.sup.f (wherein R.sup.f is a C.sub.1-8 perfluoroalkyl group). Monomer (b): a monomer copolymerizable with the monomer (a).

A process for obtaining water-based paints using expanded polystyrene (EPS) and/or extruded polystyrene (XPS) waste as raw material by a) cleaning the EPS and/or XPS waste with a surfactant to remove organic matter; b) rinse and remove all surfactants and solvents; c) treating the EPS and/or XPS waste with an organic solvent until obtaining a mixture with a concentration of EPS and/or XPS of 20 and 80% w/w; d) decanting the impurities from the mixture obtained in step (c) for 24 hours to 120 hours; e) collecting the supernatant obtained from step (d); f) make a mixture of the supernatant obtained in step (e) with emulsifier and then water; g) pigment dispersion in the mixture obtained in (f), for 5 to 50 minutes at a 500 and 3.000 rpm and 20 and 90° C.; h) mix the product of step (g) with water until the desired concentration is achieved.