Abstract:
Una composición estabilizante de la luz que comprende (A) 100 partes en masa de sílice que tiene un contenido de agua de 2 a 7% en peso, impregnada con (B) 10 a 300 partes en masa de un compuesto de amina impedida representado por la fórmula general (1):**Fórmula** en la que R1 representa un átomo de hidrógeno, un grupo hidroxilo, un grupo alquilo que tiene 1 a 30 átomos de carbono, un grupo hidroxialquilo que tiene 1 a 30 átomos de carbono, un grupo alcoxi que tiene 1 a 30 átomos de carbono, un grupo hidroxialcoxi que tiene 1 a 30 átomos de carbono, o un radical oxi; y R2 representa un grupo alquilo que tiene 1 a 30 átomos de carbono, un grupo alquenilo que tiene 2 a 30 átomos de carbono, o un grupo representado por la fórmula general (2):**Fórmula** en la que R3 tiene el mismo significado que R1.
Abstract:
batelada mestre de fotoestabilizador e método para fabricação da mesma. o presente documento provê uma batelada mestre de fotoestabilizador na qual os problemas da ocorrência de bloqueio com o tempo devido ao efeito de flutuações na temperatura no ambiente e a dificuldade de manuseio devido à solidificação resultante nos agregados são superados; e um método para produzir a mesma. a batelada mestre de fotoestabilizador é obtida por adição e mistura de 80 a 300 partes em peso de (b) um composto amina impedida representado pela fórmula (1) que se segue com relação a 100 partes em peso de (a) uma sílica produzida por um processo úmido e subsequente acréscimo adição e mistura de 5 a 50 partes em peso de (c) uma sílica produzida por um processo seco: em que, r1 representa um átomo de hidrogênio, um grupo hidróxi, um grupo alquila, hidroxialquila, alcóxi ou hidroxialcoxi com 1 a 30 átomos de carbono, ou um radical óxi; e r2 representa um grupo alquila com 1 a 30 átomos de carbono, um grupo alquenila com 2 a 30 átomos de carbono ou um grupo representado pela fórmula (2) que se segue: em que r3 representa o mesmo que r1 na fórmula (1).
Abstract:
The present invention provides an antioxidant for a thermoplastic resin that provides an excellent oxidation-preventing effect to a thermoplastic resin and that has an excellent effect of preventing a change in color caused by nitrogen oxides. Specifically, a compound represented by any of General Formulae (2) to (4), particularly a compound in which R 2 in the formulae is an alkyl group having 1 to 8 carbon atoms whose terminal on an oxygen atom side is linked with -CO-O-, is used as the antioxidant for a thermoplastic resin. Details of General Formulae (2) to (4) are as described in the description.
Abstract:
A light stabilizer composition containing a hindered amine compound obtained by the reaction between a 2,2,6,6-tetramethylpiperidinol and a carbonic ester and having improved handling properties. The composition contains (A) 100 parts by mass of silica having a water content of 2 to 7 wt% impregnated with (B) 10 to 300 parts by mass of a hindered amine compound represented by general formula (1). The composition preferably contains (C) 5 to 500 parts by mass of a benzotriazole light stabilizer represented by general formula (3). The symbols used in formulae (1) and (3) are as defined in the description.
Abstract:
PROBLEM TO BE SOLVED: To provide an aqueous acrylic urethane resin composition wherein a cured product obtained therefrom by being cured not only has excellent scratch resistance with high surface hardness but also has remarkable crack resistance and sweat resistance, and further the cured product is suitable as a surface protection material for a cellular phone or home electric appliances.SOLUTION: This aqueous acrylic urethane resin composition includes 2-70 mass% total solid portion containing a polyurethane resin (A) and a polyfunctional (meth)acrylate compound (B) having 4-6 acrylic groups so that the ratio of each solid portion falls 10:90 to 50:50 in terms of the mass ratio. The aqueous acrylic urethane resin composition is produced as follows. A urethane prepolymer (A') component obtained by reacting together a diol component (a) having a number-average molecular weight of 500-3,000, a polyisocyanate component (b), an anionic group-introduced compound (c) having a carboxy group, and an active hydrogen group-containing compound (d) having 3-4 active hydrogen groups which are a hydroxy group or an amino group respectively in one molecule and having a molecular weight of
Abstract:
PROBLEM TO BE SOLVED: To provide an aqueous polyurethane resin composition preventing sagging of a coating when being used as the coating, and excellent in the finishing appearance including surface smoothness; and to provide a coating composition containing the same.SOLUTION: The aqueous polyurethane resin composition contains 100 pts.mass of an aqueous polyurethane resin (A) and 0.1 to 50 pts.mass of an association-type thickener (B). The coating composition contains the aqueous polyurethane resin composition. The aqueous polyurethane resin (A) has a hydrophobic group selected from 8-32C hydrocarbon groups at the terminal of the polyurethane structure.
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid crystal material suitable as a liquid crystal element used in a VA-LCD (vertically alignment type liquid crystal display device) and having negative dielectric anisotropy (▵ε), high optical (refractive index) anisotropy (▵n) and low viscosity. SOLUTION: The material is a thiophene compound represented by general formula (I) (wherein, R 1 and R 2 represent each an alkyl group, an alkoxy group or the like; A 1 and A 2 represent each a 1,4-phenylene, a 1,4-cyclohexylene or a 2,6-naphthylene; Z 1 and Z 3 represent each a single bond, a -COO-, an -OCO-, a -CH 2 CH 2 -, a CH=CH- or the like; Z 2 represents a single bond, a CF 2 O-, an -OCF 2 -, a 2,4-cyclohexylene, a 1,4-cyclohexenylene or a 1,4-phenylene; and m and n represent each a number of 0. 1 or 2). COPYRIGHT: (C)2007,JPO&INPIT