A hydrophobic polyimide material and a preparation method thereof, and an organic electroluminescence light emitting diode are provided. The hydrophobic polyimide material includes organic/inorganic composite nanoparticles. The preparation method of the hydrophobic polyimide material includes steps: mixing polyamic acid solution and organic/inorganic composite nanoparticle solution evenly, and stirring to obtain solution of the hydrophobic polyimide material; coating the solution of the hydrophobic polyimide material on a surface of a substrate to obtain hydrophobic polyimide by baking and curing.

The disclosure provides composite polymer compositions comprising a polyaryl ether ketone base polymer, a conductive filler, a dispersing and processing additive, and optionally a dielectric filler. The composite polymers exhibit retained or improved strength, increased toughness, and significantly increased elongation at break compared to the base polymer. The composite polymer may be used in lightweight, non-metallic fuel conveyance systems in aircraft.

The disclosure provides composite polymer compositions comprising a polyaryl ether ketone base polymer, a conductive filler, a dispersing and processing additive, and optionally a dielectric filler. The composite polymers exhibit retained or improved strength, increased toughness, and significantly increased elongation at break compared to the base polymer. The composite polymer may be used in lightweight, non-metallic fuel conveyance systems in aircraft.

A thermoplastic resin composition of the present invention is characterized by comprising: a base resin containing a rubber-modified vinyl-based graft copolymer, a large-diameter rubber polymer having an average particle size of about 3 to about 8 μm, and an aromatic vinyl-based copolymer resin; and polyorganosilsesquioxane fine particles having an average particle size of about 0.1 to about 10 μm. The thermoplastic resin composition is excellent in low gloss, weather resistance, and the like.

A thermoplastic resin composition of the present invention is characterized by comprising: a base resin containing a rubber-modified vinyl-based graft copolymer, a large-diameter rubber polymer having an average particle size of about 3 to about 8 μm, and an aromatic vinyl-based copolymer resin; and polyorganosilsesquioxane fine particles having an average particle size of about 0.1 to about 10 μm. The thermoplastic resin composition is excellent in low gloss, weather resistance, and the like.

A cyclic aminoorganoxysilane compound having the following general formula (1): ##STR00001##
wherein R.sup.1 represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 20 carbon atoms, R.sup.2 to R.sup.5 each independently represent a substituted or unsubstituted monovalent hydrocarbon group having 1 to 20 carbon atoms, R.sup.6 to R.sup.8 each independently represent a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group having 1 to 20 carbon atoms, R.sup.9 and R.sup.10 each independently represent a substituted or unsubstituted divalent hydrocarbon group having 1 to 20 carbon atoms optionally containing a heteroatom, m is 0, 1 or 2 and n is 0 or 1.

To provide a powder coating material composition capable of forming a fluororesin layer excellent in adhesion to a base material and having foaming or cracking suppressed even when the firing temperature is as high as at least 380° C.

A powder coating material composition comprising a resin powder with an average particle size of from 10 to 800 μm containing polymer A and heat stabilizer B, wherein the proportion of the heat stabilizer B to 100 parts by mass of the polymer A is from 0.01 to 30 parts by mass. Polymer A: A tetrafluoroethylene/perfluoro (alkyl vinyl ether) copolymer having at least one type of functional group selected from the group consisting of a carbonyl group-containing group, etc., or a tetrafluoroethylene/hexafluoropropylene copolymer, having the functional group, and having a melting point of from 260 to 320° C. Heat stabilizer B: A heat stabilizer selected from the group consisting of an aromatic polyether compound, an aromatic amine compound, an aromatic sulfur compound and a polysilane compound.

A cyclic silazane compound having an alkoxysilyl group, represented by the following general formula (1):

##STR00001##

wherein R.sup.1, R.sup.2, R.sup.5 and R.sup.6 each independently represent an unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, R.sup.3 represents a divalent hydrocarbon group having 4 to 20 carbon atoms, which may contain a sulfur atom, an ester bond or a urea bond, R.sup.4 represents a hydrogen atom or an unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, m is 0 or 1, and n is 0, 1 or 2.

The photochromic cyclic compound of the present invention is represented by Formula (1) below:

##STR00001##

in the formula, L is a divalent bridging group and PC is a divalent T-type photochromic basic structural group having a naphthopyran structure, where one end of the bridging group L is bonded to at least the 3-position of the naphthopyran structure.

The photochromic cyclic compound of the present invention is represented by Formula (1) below:

##STR00001##

in the formula, L is a divalent bridging group and PC is a divalent T-type photochromic basic structural group having a naphthopyran structure, where one end of the bridging group L is bonded to at least the 3-position of the naphthopyran structure.