Abstract: The disclosure provides a fluoropolyether compound represented by formula (1): R1—CH2—R2—CH2—R3 wherein R1 is C1-C10 alkoxy; R2 is —(CF2)pO(CF2O)x(CF2CF2O)y(CF2CF2CF2O)z(CF2CF2CF2CF2O)w(CF2)p—; x and y are each a real number of 0 to 30; z is a real number of 0 to 30; w is a real number of 0 to 20; p is an integer of 1 to 3; R3 is —OCH2CH(OH)CH2OH, —OCH2CH(OH)CH2OCH2CH(OH)CH2OH, —O(CH2)mOH, or —OCH2(OH)CHCH2—OC6H4—R4; m is an integer of 2 to 8; and R4 is hydrogen, C1-C4 alkoxy, amino, or an amide residue; and also provides a lubricant having the compound and a magnetic disk.

Abstract: One aspect of the present invention resides in a hot melt adhesive including a thermoplastic polymer and a tackifier, wherein the tackifier includes an acid-modified tackifier that is modified by at least one of maleic acid and maleic anhydride, and by at least one selected from the group consisting of acrylic acid, methacrylic acid, an acrylic acid ester, and a methacrylic acid ester.

Abstract: A compound of the formula (2) wherein R3 and R4 are the same or different and are a branched hydrocarbon group having 10 to 26 carbon atoms, 42 to 100 mole % of the benzylic carbons of each R3 and R4 are quaternary, m and n are each a real number of at least zero, and 2.0?m+n?3.0.

Abstract: Disclosed is a cylinder liner having a high bonding strength to a cylinder block. Further disclosed is a method for producing the same. The cylinder liner uses a silicon-aluminum alloy as a material; a plurality of protrusions are formed on the external surface thereof; and the protrusions each contain a pillar section extending from the external surface, and a head section formed at the end of the pillar section.

Abstract: The invention has for its object to provide a solar photovoltaic generation module capable of being used over an extended period of time while keeping on its performance. The solar photovoltaic generation module of the invention comprises at least an outer frame, a transparent substrate, a sealing material and a back sheet, each working as a structural member, and either one of the following functional member combinations: (A) a cell and an interconnector, and (B) a transparent electrode, a photovoltaic layer and a back-surface electrode. At least a part or the whole of the surface of any one of the members is covered with a coating film of a water-repellent surface modifier material.

Abstract: Disclosed is a cylinder liner having a high bonding strength to a cylinder block. Further disclosed is a method for producing the same. The cylinder liner uses a silicon-aluminum alloy as a material; a plurality of protrusions are formed on the external surface thereof; and the protrusions each contain a pillar section extending from the external surface, and a head section formed at the end of the pillar section.

Abstract: An object of the present invention is to provide a compound that is resistant to decomposition even when coming into contact with a magnetic head, while enabling a reduced spacing between the magnetic head and a magnetic disk, and to provide a lubricant comprising the compound, and a magnetic disk comprising the compound. The present invention relates to a compound represented by formula (1), a lubricant comprising the compound, and a magnetic disk comprising the compound: C6H6-i—[O—(CH2)n—O—CH2—R—CH2—X]i??(1) wherein n is an integer of 2 to 6; i is an integer of 2 or 3; X is a group represented by —OH, —O—(CH2)m—OH, —OCH2CH(OH)CH2OH, —OCH2CH(OH)CH2O—C6H5, or —OCH2CH(OH)CH2O—C6H4—OCH3; m is an integer of 1 to 6; R is —(CF2)pO(CF2O)x(CF2CF2O)y(CF2CF2CF2O)z(CF2CF2CF2CF2O)w(CF2)p—; x and y are each a real number of 0 to 30; z is a real number of 0 to 30; w is a real number of 0 to 20; and p is an integer of 1 to 3.

Abstract: A compound of the formula (1), and lubricant, and magnetic disk each using the same A-O—CH2—Rf—CH2—B??(1) wherein A is a group of the formula (a) below, B is a group of the formula (b) or (c) or (d) below, p is 0, 1 or 2, q is a real number of 2 to 10, R is C1-4 fluoroalkyl, Ar is unsubstituted or substituted aromatic group with C1-30 alkyl or C1-30 alkoxyl, Rf is —CF2CF2O(CF2CF2CF2O)xCF2CF2— or —CF2CF2CF2O(CF2CF2CF2CF2O)yCF2CF2CF2—, x and y are each a real number of 0 to 50.

Abstract: A compound of the formula (2) wherein R3 and R4 are the same or different and are a branched hydrocarbon group having 10 to 26 carbon atoms, 42 to 100 mole % of the benzylic carbons of each R3 and R4 are quaternary, m and n are each a real number of at least zero, and 2.0?m+n?3.0.

Abstract: A compound of the formula (2) wherein R3 is a hydrocarbon group having 12 or 14 carbon atoms which is mainly composed of any one of 1-methylundecyl, 1-ethyldecyl, 1-dodecyl, 1-methyltridecyl, 1-ethyldodecyl and 1-tetradecyl, and 30 to 40 mole % of the total benzylic carbons of R3 being quaternary, R4 is a branched hydrocarbon group having 16 to 20 carbon atoms, 42 to 100 mole % of the total benzylic carbons of each R3 and R4 being quaternary, m and n are each a real number of 1.0?m?2.0, 1.0?n?2.0 and 2.0?m+n?3.0.

Abstract: A lubricant containing a compound (A) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a polar group at each of opposite terminals thereof, and a compound (B) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a nonpolar group at at least one terminal thereof —(CF2CF2CF2O)a-??(1) wherein a is a real number of 5 to 30.

Abstract: A cyclophosphazene compound of the formula (I), and lubricants and magnetic disks using the compound wherein n is 2, 3 or 4, m is an integer of 1 to 12, R is C1-4 fluoroalkyl and Rf is —CF2O(CF2CF2O)x(CF2O)yCF2— or —CF2CF2O(CF2CF2CF2O)zCF2CF2— in which x, y and z are each 0 or a positive real number to give a number average molecular weight of 500 to 4000 to a fluoropolyether of the formula HOCH2—Rf—CH2OH including said Rf, the fluoropolyether having a molecular weight distribution (PD) of 1.0 to 1.5.

Abstract: A bearing lubricant of the present invention contains a compound represented by the following general formula: CfH2f+1—R1a—O—(C?O)—O—R2b—CgH2g+1 wherein O represents an oxygen atom; C represents a carbon atom; H represents a hydrogen atom; R1 and R2 independently represent a C2-C48 oxaalkylene group having 1 to 6 oxygen atoms; a and b independently represent an integer of 0 or 1 and satisfy a+b?1; and f and g independently represent an integer of 1 to 12.

Abstract: A lubricant containing a compound (A) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a polar group at each of opposite terminals thereof, and a compound (B) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a nonpolar group at at least one terminal thereof —(CF2CF2CF2O)a-??(1) wherein a is a real number of 5 to 30.

Abstract: A compound of the formula (1), lubricant containing the compound and magnetic disk R1—C6H4O—CH2CH(OH)CH2OCH2—R2—CH2—O—R3??(1) wherein R1 is hydrogen, alkoxyl having 1 to 4 carbon atoms, amino or amido, R2 is —CF2O(CF2CF2O)x(CF2O)yCF2—, —CF2CF2O(CF2CF2CF2O)z—CF2CF2— or —CF2CF2CF2O(CF2CF2CF2CF2O)nCF2CF2CF2—, x and y are each an integer of 0 to 15, z is an integer of 1 to 15, n is an integer of 0 to 4, R3 is —CH2CH(OH)CH2OH, —CH2CH(OH)CH2OCH2CH(OH)CH2OH or —(CH2)mOH, m is an integer of 2 to 6.

Abstract: A lubricant containing a compound (A) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a polar group at each of opposite terminals thereof, and a compound (B) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a nonpolar group at least one terminal thereof —(CF2CF2CF2O)a-??(1) wherein a is a real number of 5 to 30.

Abstract: A lubricant containing a compound of the formula (I) wherein n is substantially 2, 3 or 4, R is C1-4 fluoroalkyl and Rf is —CF2O(CF2CF2O)x(CF2O)yCF2— or —CF2CF2O(CF2CF2CF2O)zCF2CF2— in which x, y and z are each 0 or a positive real number to give a number average molecular weight of 500 to 2000 to a fluoropolyether of the formula HOCH2—Rf—CH2OH including said Rf, the fluoropolyether having a molecular weight distribution (PD, weight average molecular weight/number average molecular weight) of 1.0 to 1.5.

Abstract: A compound of the formula (1), lubricant containing the compound and magnetic disk C6H4—(O—Z—R—X)2??(1) wherein Z is —CH2CH2O— or —CH2CH(OH)CH2O—, R is —CH2CF2CF2CF2O(CF2CF2CF2CF2O)nCF2CF2CF2CH2—, n is a real number of 0 to 20, X is —OH, —O(CH2)mOH, —OCH2CH(OH)CH2OH, —OCH2CH(OH)CH2O—C6H5 or —OCH2CH(OH)CH2O—C6H4—OCH3, m is an integer of 1 to 6.

Abstract: A compound of the formula (1), lubricant containing the compound and magnetic disk (P3N3)—[R1-R2]6??(1) wherein R1 is —OCH2CF2O(CF2CF2O)x(CF2O)yCF2CH2O—, or —OCH2CF2CF2O(CF2CF2CF2O)ZCF2CH2O— or —OCH2CF2CF2CF2O(CF2CF2CF2CF2O)nCF2CF2CF2CH2O—, x and y are each an integer of 0 to 15, z is an integer of 1 to 15, n is an integer of 0 to 20, R2 is hydrogen, hydroxyalkyl, amino or amido.

Abstract: A bearing lubricant of the present invention contains a compound represented by the following general formula: CfH2f+1—R1a—O—(C?O)—O—R2b—CgH2g+1 wherein O represents an oxygen atom; C represents a carbon atom; H represents a hydrogen atom; R1 and R2 independently represent a C2-C48 oxaalkylene group having 1 to 6 oxygen atoms; a and b independently represent an integer of 0 or 1 and satisfy a+b?1; and f and g independently represent an integer of 1 to 12.