Abstract: A power storage device separator includes a polyolefin based porous film laminated on at least one side with a particle-containing layer containing cellulose based resin, inorganic particles, and thermoplastic resin particles with a melting point of 100-140° C.

Abstract: The resin of the invention comprises both a phosphorus-containing residue having a bicycloalkyl structure and a specific divalent phenol residue. The invention provides a resin having excellent optical properties, which is colorless and transparent, has a high refractive index and is optically low dispersive, as well as its molded product.

Abstract: A thermoplastic resin contains a polymer, and the polymer includes a divalent phosphate residue having a spiro ring, represented by formula (1), in a molecule and has a number average molecular weight of at least 2,000: wherein R1 is independently selected from the group consisting of a hydrogen atom, a halogen atom, an aliphatic hydrocarbon group having the carbon number of 1 to 20, an aromatic hydrocarbon group having the carbon number of 1 to 20, and a nitro group; p and q are integers satisfying p+q=0 to 16; X independently represents oxygen, sulfur, selenium, or an unshared electron pair; Y is independently selected from oxygen, sulfur, and a methylene group; and n and m are integers satisfying n+m=0 to 4.

Abstract: The resin of the invention comprises both a phosphorus-containing residue having a bicycloalkyl structure and a specific divalent phenol residue. The invention provides a resin having excellent optical properties, which is colorless and transparent, has a high refractive index and is optically low dispersive, as well as its molded product.

Abstract: The resin of the invention comprises both a phosphorus-containing residue having a bicycloalkyl structure and a specific divalent phenol residue. The invention provides a resin having excellent optical properties, which is colorless and transparent, has a high refractive index and is optically low dispersive, as well as its molded product.

Abstract: A thermoplastic resin contains a polymer, and the polymer includes a divalent phosphate residue having a spiro ring, represented by formula (1), in a molecule and has a number average molecular weight of at least 2,000: wherein R1 is independently selected from the group consisting of a hydrogen atom, a halogen atom, an aliphatic hydrocarbon group having the carbon number of 1 to 20, an aromatic hydrocarbon group having the carbon number of 1 to 20, and a nitro group; p and q are integers satisfying p+q=0 to 16; X independently represents oxygen, sulfur, selenium, or an unshared electron pair; Y is independently selected from oxygen, sulfur, and a methylene group; and n and m are integers satisfying n+m=0 to 4.

Abstract: A resin composition having a high refractive index and low dispersion characteristics including a carbonate residue, a phosphonic acid residue and a dihydric phenol residue, wherein the mol fractions of the phosphonic acid residue and the carbonate residue satisfy 1>(a)/{(a)+(b)}≧0.5 wherein (a) represents the number of moles of the phosphonic acid residues, and (b) represents the number of moles of the carbonate residues.

Abstract: According to the present invention, a resin composition having a high refractive index and low dispersion characteristics is provided. THE resin composition comprises a carbonate residue, a phosphonic acid residue represented by the following structural formula (1), and a dihydric phenol residue represented by the following structural formula (2), wherein the mol fractions of the phosphonic acid residue and the carbonate residue satisfy equation (3).

Abstract: A process for production of l-alkylthiomethanediphosphonic acid compound or 1-arylthiomethanediphosphonic acid compound characterized by removing a thiolate byproduct as an insoluble salt, in the condensation represented by the following formula: ##STR1## wherein R'.sub.1 represents a linear or branched alkyl group having 1 to 6 carbon atoms, R.sub.2 represents an alkyl or aryl group, R.sub.1 represents a pharmaceutically allowable cation, hydrogen atom, or linear or branched alkyl group having 1 to 6 carbon atoms. The present invention significantly improves the yield compared with conventional methods, and simplifies the purification process at the same time, thus is extremely useful in an economical and industrial points of view.

Abstract: A cathode material for a lithium ion secondary battery comprises a compound of the formulaLi.sub.1-X-a A.sub.X Ni.sub.1-Y-b B.sub.Y O.sub.2.wherein:A is an alkaline earth metal component selected from the group consisting of (1) at least two of magnesium, calcium, strontium and barium, (2) strontium alone and (3) barium alone;B is at least one transition metal element other than Ni;X is the total number of moles of A and if A consists of more than one alkaline earth metal element, then X is the total number of moles of all alkaline earth metal elements;Y is the total number of moles of B and if B consists of more than one transition metal element, then Y is the total number of moles of all transition metal elements; andX, Y, a and b satisfy the respective equations:0<X.ltoreq.0.100<Y.ltoreq.0.30-0.10.ltoreq.a.ltoreq.0.10-0.15.ltoreq.b.ltoreq.0.15.

Abstract: The present invention discloses a methane diphosphonate derivative, a process for producing said derivative and its pharmaceutical applications, said methane diphosphonate derivative indicated with general formula (1): ##STR1## (wherein, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently a pharmacologically acceptable cation, a hydrogen atom or a straight chain or branched alkyl group having 1-4 carbon atoms, R.sub.5 is a hydrogen atom or a trialkylsilyl group, m is an integer of 0 to 3, n is an integer of 1 to 3, R.sub.6 and R.sub.7 are independently a hydrogen atom or an alkyl group, and X represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group or an alkylthio group).

Abstract: This invention relates to a methylenediphosphonic acid compound expressed by the formula (1). The compound has a marked effect as an anti-inflammatory agent or, more particularly, against inflammations accompanying disturbances in bone metabolism.