摘要:
A (meth)acrylic ester compound represented by the general formula (1) and a dental material containing the compound, wherein, in the formula, R11 represents a divalent aromatic group; R12 represents a hydrogen atom or a methyl group; R13 represents an aryl group; R14 represents a hydrogen atom or a methyl group; and X11, represents an oxygen atom or a sulfur atom. A polymerizable composition containing the (meth)acrylic ester compound and an optical part obtained by polymerizing the polymerizable composition are also provided. The cured composition can provide advantageous physical and optical properties.
摘要翻译:由通式(1)表示的(甲基)丙烯酸酯化合物和含有该化合物的牙科材料,其中,在式中,R 11表示二价芳族基团; R 12表示氢原子或甲基; R 13表示芳基; R 14表示氢原子或甲基; 和X 11表示氧原子或硫原子。 还提供了含有(甲基)丙烯酸酯化合物和通过聚合可聚合组合物而获得的光学部件的可聚合组合物。 固化的组合物可以提供有利的物理和光学性质。
摘要:
The invention provides a phosphate compound having an unsaturated double bond and a metal salt thereof; a dental material containing a phosphate compound having an unsaturated double bond and/or a metal salt thereof; and a dental composition containing a phosphate compound having an unsaturated double bond and/or a metal salt thereof. The phosphate compound of the invention provides a dental material and a dental composition such as a bonding material, adhesive material and a dental luting agent that are highly stable during storage, convenient for handling, and that exhibit higher adhesiveness and bond durability.
摘要:
A (meth)acrylic ester compound represented by the general formula (1) and a dental material containing the compound, wherein, in the formula, R11 represents a divalent aromatic group; R12 represents a hydrogen atom or a methyl group; R13 represents an aryl group; R14 represents a hydrogen atom or a methyl group; and X11, represents an oxygen atom or a sulfur atom. A polymerizable composition containing the (meth)acrylic ester compound and an optical part obtained by polymerizing the polymerizable composition are also provided. The cured composition can provide advantageous physical and optical properties.
摘要翻译:由通式(1)表示的(甲基)丙烯酸酯化合物和含有该化合物的牙科材料,式中,R11表示二价芳香族基团; R12表示氢原子或甲基; R 13表示芳基; R14表示氢原子或甲基; X 11表示氧原子或硫原子。 还提供了含有(甲基)丙烯酸酯化合物和通过聚合可聚合组合物而获得的光学部件的可聚合组合物。 固化的组合物可以提供有利的物理和光学性质。
摘要:
Disclosed are novel fluoran compounds represented by the formula (I): ##STR1## wherein R.sub.1 and R.sub.2 are different groups selected from cyclohexyl, n-butyl and isobutyl, e.g., in the form of crystals characterized by a specific X-ray diffraction diagram; crystalline toluene adducts thereof; and recording materials containing these fluoran compounds.
摘要:
Heat-sensitive recording paper which employs as a chromogenic compound a novel fluoran compound represented by the formula: ##STR1## and prepared reacting a benzoic acid derivative of the formula: ##STR2## with a diphenylamine derivative of the formula: ##STR3## wherein R is a lower alkyl group have excellent stability.
摘要:
A poly(thio)ester (co)polymer which comprises a repeating structural unit represented by the formula (1-A) as an essential structural unit: [wherein R11 is a divalent aliphatic hydrocarbon group which may contain at least one sulfur atom in a sulfide group; R12 is a mono- or poly-cyclic aliphatic or aromatic dicarboxylic acid residue; and X11 and X12 are each independently an oxygen atom or sulfur atom, and when X11 and X12 are the oxygen atoms, R11 is a divalent aliphatic hydrocarbon group containing at least one sulfur atom in the sulfide group]; and an optical component obtainable by molding the poly(thio)ester (co)polymer. The poly(thio)ester (co)polymer is excellent in transparency and optical characteristics (e.g., a higher refractive index, higher Abbe number, and lower birefringence), and has also good mechanical characteristics and thermal characteristics, and further is excellent in melt fluidity and injection moldability.
摘要翻译:包含由式(1-A)表示的重复结构单元作为必要结构单元的聚(硫代)酯(共)聚合物:[其中R 11是二价脂族烃基,其可以是 在硫化物基团中含有至少一个硫原子; R 12是单环或多环脂族或芳族二羧酸残基; X 11和X 12各自独立地是氧原子或硫原子,当X 11和X 12时, >是氧原子,R 11是在硫化物基团中含有至少一个硫原子的二价脂族烃基]; 以及通过模制聚(硫代)酯(共)聚合物而获得的光学部件。 聚(硫代)酯(共)聚合物的透明度和光学特性(例如,较高的折射率,较高的阿贝数和较低的双折射)具有优异的机械特性和热特性,而且熔体 流动性和注塑成型性。
摘要:
Disclosed are a novel fluoran compound represented by the formula (I): ##STR1## and a heat-sensitive recording paper which is obtained by using the fluoran compound as a chromogenic compound and is excellent in preserving stability.
摘要:
A sulfur-containing unsaturated carboxylate compound comprising a sulfur-containing substituent and at least two &agr;,&bgr;-unsaturated carboxylic acid residues, which are each attached to a secondary or tertiary carbon atom via an oxygen atom; a polymerizable composition comprising the sulfur-containing unsaturated carboxylate compound; a cured product prepared by polymerizing the polymerizable composition; an optical component consisting of the cured product; and novel intermediate compounds for preparation of the above carboxylate.
摘要:
A low-birefringent organic optical component comprising a polymer prepared by polymerizing a racemic mixture of the monomer with an asymmetric spiro ring represented by general formula (1) as an essential ingredient; wherein ring A represents a monocyclic or polycyclic organic group, wherein two ring As are mutually bound each other via a spiro bond to form a spiro ring which has a molecular asymmetric structure; n is an integer of 0 to 10; X.sub.1 and Y.sub.1 are binding groups; and Z.sub.1 is a polymerization-active group. The component has excellent transparency, mechanical strength and heat resistance, as well as a low birefringence.
摘要:
Novel fluoran compounds represented by the formula (I): ##STR1## wherein R.sup.1 is an alkyl group having from 1 to 4 carbon atoms, preparation process of the fluoran compounds, and a heat-sensitive and a pressure-sensitive recording material comprising the fluoran compound, are disclosed.