Abstract:
Un boulon (10) dans une chaîne de montage en continu telle qu'une chaîne de montage de véhicule automobile possède un écrou (30) pouvant être vissé et serré sur le boulon d'un seul côté au moyen d'une clé mécanique (40) et possède une tige de guidage (20) d'une longueur prédéterminée l pour l'épaisseur (L) de l'écrou entre un filet (16) qui est en prise avec l'écrou et une queue de goujon (18) saisie par la clé. La longueur de la tige de guidage est telle que la queue de goujon dépasse sensiblement toute la longueur de l'écrou lorsque celui-ci est tourné d'environ un tour et est serré de manière temporaire sur le boulon.
Abstract:
A (meth)acryloyl fluoride-containing polymer comprising monomer units represented by the following formula: (FORMULA) wherein R represents H or CH u, or monomer units described above and monomer units represented by the following formula: (FORMULA) wherein R represents H or CH u, and R1 represents a C u to C u lower alkyl group, and a dental material containing the above-described polymer capable of gradually releasing fluoride ion.
Abstract:
PROBLEM TO BE SOLVED: To provide a finishing method and a finishing structure of an interior material capable of simplifying the finishing of the interior material capable of providing a building or the like with an electromagnetic radiation shielding function and a conduction of electricity breaking and detecting function, realizing the simple and quick working processes, sufficiently increasing the safety and the securities of the building or the like, and reducing the cost. SOLUTION: In this finishing method and this finishing structure of the interior material for sticking the electromagnetic radiation disorder suppressor partially or fully to a wall face part, a door part, a ceiling part, a floor part or the like of the building or the like, the electromagnetic radiation disorder suppressors for high frequency 13 and the electromagnetic radiation disorder suppressors for low frequency 14 are alternately abutted and conducted to each other.
Abstract:
PROBLEM TO BE SOLVED: To facilitate cooking along with higher heat efficiency by placing a heat transfer body which is made of chips produced in machining of metal and formed in a flat or angular shape above a combustion flame of a cooking stove to evenly heat a heating surface. SOLUTION: A heat transfer body carrier plate 2 made up of a metal screen or the like is mounted above a combustion flame 1 of a cooking stove A and a heat transfer body 4b which is made of spiral chips 3 produced in machining of metal or produced by housing the chips 3 into a bag 5 made up of a metal screen and forming the work flat is mounted on the top surface of the carrier plate 2. A cooking device 6 such as pot, frying pan or steel plate for roasting is placed on the heat transfer body. The combustion flame 1 of the cooking stove A turns the whole of the heat transfer body to a heat source body 4b having a uniform heating value and enables evenly heating of a heating surface of the cooking device 6 hence facilitating cooking. This also accomplishes complete combustion of an incompletely burned gas by the stored heat of the heat transfer body thereby achieving a higher heat efficiency.
Abstract:
PROBLEM TO BE SOLVED: To attach/detach the suspended material of a hanging down type such as a plumb bob for surveying, curtain, and the like to/from hanger body simply and easily. SOLUTION: A hunger consists of a suspended material A which a part connected to a hanger body B is formed as a ball shaped connecting body, and the hanger body B which a hollow part 20 having a diameter larger than the diameter of the connecting body is arranged on the lower part inner center made of rubber of synthetic resin having a suitable elastic performance and strength, and a connecting body forcibly inserting hole 21 communicated to an outside is vertically arranged on the lower end of the hollow part 20. The connecting body is forcibly inserted and fitted in the hollow part 20 through the connecting body forcibly inserting hole 21 freely to insert and pull it.
Abstract:
PURPOSE:To provide the novel compound useful as a raw material for aromatic polyamides used as a resin for coatings, films, fibers, molded products, etc. CONSTITUTION:A compound of formula I (Ar is group of formula II or formula III), e.g. 2,2'-di(p-carboxyphenoxy)biphenyl. The compound of formula I is obtained by thermally reacting 2,2'-biphenol with p-fluorobenzonitrile in a solvent (e.g. DMSO) and subsequently oxidizing the resultant 2,2'-di(p-cyanophenoxy) biphenyl in the presence of an alkali. The compound of formula I is polycondensed with an aromatic diamine into a polyamide of formula IV (Ar' is divalent aromatic organic residue), which is excellent in heat resistance and high in solubility in solvents.
Abstract:
PURPOSE:To obtain a uniform, transparent and low-modulus polyamide-siloxane conjugate product excellent in combustibility by incorporating a specified alkoxysilane into an organic solvent containing a specified polyamic acid to effect hydrolysis and condensation, applying the obtained solution to a base plate, and baking it. CONSTITUTION:An organic solvent (e.g. N,N-dimethylacetamide) containing a polyamic acid having structural units of formula I [wherein R is a tetravalent organic group; R is CH3, C2H5 or phenyl; R is 1-8C alkyl; R is (trifluoro) methyl or trimethylsilyl; m is 0 to 3; m is 0 to 4; and n is 0 to 2] is mixed with at least one alkoxysilane of formula II (wherein p is 1 or 2) to effect hydrolysis and condenstion. The obtained solution is applied to a base plate (e.g. glass plate) and baked.
Abstract:
PURPOSE:To obtain an aromatic polyamide having excellent heat resistance, soluble in organic solvent and useful as a raw material for resin of coating agent, film, etc., by carrying out the polycondensation of a specific aromatic diamine and an aromatic dicarboxylic acid (derivative). CONSTITUTION:The objective polyamide composed of the constituent unit of formula II (Ar is bivalent aromatic organic group) and having an intrinsic viscosity of >=0.4dL/g is obtained by the polycondensation of (A) an aromatic diamine consisting of 2,2'-di(p-aminophenoxy)-biphenyl of formula I and (B) an aromatic dicarboxylic acid (derivative) such as terephthalic acid and 3- chloroisophthalic acid in (C) an organic polar solvent such as N,N- dimethylacetamide.
Abstract:
PURPOSE:To obtain a new polyimide resin having a specific intrinsic viscosity in N-methylpyrrolidone or cons. sulfuric acid, soluble in various organic solvents, having a high glass transition temperature, comprising a specific constituent unit. CONSTITUTION:A diphenylnaphtylamide shown by formula I (Ny is naphthyl which may contain substituent group) is reacted with a tetracarboxylic acid dianhydride shown by formula II (R is tetrafunctional aromatic group) in an organic solvent such as N,N-dimethylacetamide at -20 to 50 deg.C for several minutes to several days to give a polyamic acid and the polyamic acid is heated at 200-350 deg.C to give the objective resin comprising a constituent unit shown by formula III (A'r is bifunctional diphenylnaphthylamine), having 0.1-5dl/g intrinsic viscosity in N-methylpyrrolidone or cons. sulfuric acid at 30 deg.C.