摘要:
A fluorine-containing polymer obtained using a 1,6-diene ether compound represented by formula [1] is a high-performance polymer exhibiting a low refractive index, high glass transition point, a high degree of transparency, and solubility in solvents. There are many potential uses, such as use as a coating material or bulk material. For example, said polymer could be effectively used in high-tech fields such as: optical materials such as low-reflection films and optical waveguide cladding; semiconductor materials such as pellicles and resists in semiconductor lithography; and protective film materials, insulating film materials, and water-repellent materials. (In the formula, R1 represents a C6-18 aryl group or a C1-12 alkyl group, which may be substituted.)
摘要:
Disclosed is a fluorine-containing polymer obtained by polymerizing a 1,6-diene-type ether compound represented by formula [1] and, for example, a (meth)acrylic acid compound represented by formula [2]. The fluorine-containing polymer shows high transparency, has a high glass transition point, and is soluble in a solvent and therefore has moldability. In the case where a (meth)acrylic unit has a reactive substituent, by utilizing the crosslinking reaction thereof, a thin film having high solvent resistance can be produced. In formulae [1] and [21, R1 and R2 each independently represent a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, which may be substituted, R3 represents a hydrogen atom, a fluorine atom, or a methyl group, and R4 represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, which may be substituted, or an aromatic group having 5 to 10 ring members, which may be substituted.
摘要:
Disclosed is a fluorine-containing polymer obtained by polymerizing a 1,6-diene-type ether compound represented by formula [1] and, for example, a (meth)acrylic acid compound represented by formula [2]. The fluorine-containing polymer shows high transparency, has a high glass transition point, and is soluble in a solvent and therefore has moldability. In the case where a (meth)acrylic unit has a reactive substituent, by utilizing the crosslinking reaction thereof, a thin film having high solvent resistance can be produced. In formulae [1] and [2], R1 and R2 each independently represent a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, which may be substituted, R3 represents a hydrogen atom, a fluorine atom, or a methyl group, and R4 represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, which may be substituted, or an aromatic group having 5 to 10 ring members, which may be substituted.
摘要翻译:公开了通过使由式[1]表示的1,6-二烯型醚化合物和例如由式[2]表示的(甲基)丙烯酸化合物聚合而获得的含氟聚合物。 含氟聚合物显示高透明度,玻璃化转变点高,并且溶于溶剂,因此具有成型性。 在(甲基)丙烯酸单元具有反应性取代基的情况下,通过利用其交联反应,可以制备耐溶剂性高的薄膜。 在式[1]和[2]中,R 1和R 2各自独立地表示氢原子或碳原子数1〜12的烷基,可以被取代,R 3表示氢原子,氟原子或甲基, R 4表示氢原子,可以被取代的碳原子数1〜12的烷基或可以被取代的环状成员5〜10的芳香族基。
摘要:
The present invention is directed to stabilize the flying height at a constant level and prevent head crashes. Indented portions 104 and 105 are formed shorter than rail portions 101 and 102. Rear rail surfaces 113 and front rail surfaces 112 are formed at the slider 1 with middle rail surfaces 111 formed between them. The rear rail surfaces 113 and the front rail surfaces 112 each include a first surface (L1) whose surface width is determined by the entire width W01 or W02 of the rail portion 101 or 102 and a second surface (L3) whose surface width is gradually reduced starting from the surfaces width W01 or W02 of the first (L1) toward the surface width W11 or W12 of the middle rail surfaces 111. The requirements, i.e., L1.ltoreq.2.5% of L0 and L1
摘要:
The present invention relates to a film thickness measuring method measuring a film thickness of an element formation layer formed on a substrate and its object is to provide a film thickness measuring method which can measure a residual film thickness of a polishing object film in a polishing process at a high accuracy. In a fabrication method of a thin film magnetic head, alumina is coated over a dummy layer 54 and a bottom shielding layer 16 after forming the dummy layer 54 along with the bottom shielding layer 16 and a planarized layer 24 is formed by polishing the surface thereof using a CMP. Next, after forming a top shielding layer 32 over the bottom shielding layer 16, a planarized layer 38 is form by embedding alumina. A film thickness of an embedded 38 on the dummy layer 54 is measured by a non-contact optical film thickness measuring equipment and a film thickness of the top shielding layer 32 is measured based on the film thickness.
摘要:
A cleaning apparatus includes a cleaning tank for reserving cleaning fluid, an object to be cleaned being immersed in the cleaning fluid, a vibrator for vibrating the cleaning fluid in the cleaning tank, and two micro-vibration sources for minutely vibrating the object to be cleaned in two different directions.
摘要:
.alpha.-(trifluoromethyl)arylacetic acid for use as raw materials for medicines, agricultural chemicals, liquid crystals etc. or reagents for determining an optical purity is readily obtained through very simple reaction steps, i.e. by reacting a perfluoro(2-methyl-1,2-epoxypropyl)ether compound obtainable by ozone, oxidation of a heptafluoroisobutenyl ether compound with an aromatic compound ArH to afford an .alpha.,.alpha.-bis(trifluoromethyl)arylacetic acid ester, followed by decarboxylation and hydrolysis of the resulting ester compound.
摘要:
A herein is a method of and an apparatus for electrostatically spray-coating a workpiece with electrically-conductive paint. The workpiece is first sprayed with the paint directly subjected to a high voltage from a rotatable atomizing type spray gun so as to electrostatically coat the work with the paint. Thereafter, cleaning liquid is supplied to a rotatable atomizing head through a line for washing after completion of the electrostatic spray coating process so as to clean the rotatable atomizing head. Further, after the rotatable atomizing head has been washed, the line is dried, and the next electrostatic spray coating process is carried out after the line has been dried. The spray gun includes an inner line as a path, for supplying the paint to the rotatable atomizing head, and an outer line as a path used for washing, for supplying the cleaning liquid used to wash the rotatable atomizing head. The inner line oriented toward the rotatable atomizing head has a terminal which projects forward from a terminal of the outer line.
摘要:
Disclosed herein is a line jointing structure suitable for use in an electrostatic spray painting apparatus. The line jointing structure is used to connect to a device, an insulating line serving as a path for transportation of electrically conductive paint to which a high voltage is applied. The line jointing structure basically comprises a jointing member having a connecting portion capable of being inserted into an end of the insulating line, a sleeve disposed to cover an outer peripheral surface of the line, a nut for pressing the sleeve toward the connecting portion so as to connect the line to the connecting portion, the nut being fixedly mounted on the jointing member, and insulating seals disposed at both ends of the nut.
摘要:
A method for the long-distance transport of a liquid of methanol or a solution of methanol and at least one organic compound other than methanol, under pressure, through a pipeline installation in which the portions of the pipeline installation that contact said liquid consist essentially of carbon steel and/or low alloy steel, the sum of whose metallic components other than Fe is up to 5 wt. %, in which the water content of said liquid is limited to (a) the range of 0 to 35 wt. % if the content of the formate radical in said liquid is up to 0.05 wt. %, (b) the range of 0.25 to 35 wt. % if the content of the formate radical in said liquid is in the range of 0.05 to 2 wt. % and (c) the range of 0 to 35 wt. % if the content of the formate radical in said liquid is in the range of 2 to 3 wt. %, so that said liquid is transported under pressure while the volume ratio of the formate radical to the water content is kept at a ratio that does not permit the presence of more than 3 wt. % of the formate radical in the liquid.