摘要:
A method for producing a polymer includes hydrolyzing and condensing (B) a hydrolyzable-group-containing silane monomer in the presence of (A) a polycarbosilane, the polycarbosilane (A) being a polymer (I) obtained by reacting (a) a compound shown by the following general formula (1) and (b) at least one compound selected from the group consisting of a compound shown by the following general formula (2) and a compound shown by the following general formula (3) in an organic solvent in the presence of at least one of an alkali metal and an alkaline earth metal, R1kCX4-k (1) R2kSiY4-k (2) R3mY3-mSiCR4nX3-n (3) wherein R1 to R4 individually represent a monovalent organic group or a hydrogen atom, X represents a halogen atom, Y represents a halogen atom or an alkoxy group, k represents an integer from 0 to 3, and m and n individually represent integers from 0 to 2.
摘要翻译:制备聚合物的方法包括在(A)聚碳硅烷存在下水解和缩合(B)含可水解基团的硅烷单体,所述聚碳硅烷(A)是通过使(a)化合物 由下述通式(1)和(b)表示的有机溶剂中的至少一种选自下述通式(2)表示的化合物和下述通式(3)所示的化合物的化合物 在碱金属和碱土金属中的至少一种的存在下,<?in-line-formula description =“In-line formula”end =“lead”?> R&lt; SUB (1)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“在线公式”end =“lead”?> R 2> 2 u>(3) -formulae description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead”?> R <3> SUP> m 3-m SiCR 4 i> N 3-n(3)<?in-line-formula description =“ 其中R 1至R 4各自独立地表示一价有机基团或氢原子,X表示卤素原子,Y 表示卤素原子或烷氧基,k表示0〜3的整数,m和n分别表示0〜2的整数。
摘要:
A method of producing a polycarbosilane includes reacting (A) a polycarbosilane having a silicon-hydrogen bond and (B) a compound having a carbon-carbon multiple bond to which a silicon-hydrogen bond may be added.
摘要:
A polycarbosilane, having a main chain in which silicon atoms and carbon atoms are alternately repeated, includes a repeating unit shown by a following general formula (1), a repeating unit shown by a following general formula (2), and a repeating unit shown by a following general formula (3).
摘要:
In an outboard motor S, a first drive shaft 31 and a second drive shaft 32 are interlocked by an intermediate gear mechanism 33 including a drive gear 34 mounted on the first drive shaft 31 and a driven gear 35 mounted on the second drive shaft 32. The second drive shaft 32 is supported in an upper bearing 38 and a lower bearing 39 disposed on the upper and the lower side of the driven gear 35. The upper bearing 38 supports an upper end part 32a of the second drive shaft 32 extending upward from the driven gear 35 and the upper bearing 38 is at a vertical position coinciding with that of the drive gear 34. The lower bearing 39 is placed at a position on a lower end part 32b of the second drive shaft 32. The lower end part 32b extends between the driven gear 35 and an input gear 51 included in the output gear mechanism 50. The first drive shaft 31 drives an oil pump 70 for supplying moving parts requiring lubrication and placed in a gear case 13 holding the output gear mechanism 50 interlocked with the second drive shaft 32. The second drive shaft 32 is short and light, the outboard motor can be manufactured at a low manufacturing cost and the oil pump 70 is small.
摘要:
A protector comprising an inner tube, a lid connected to the upper opening of the inner tube through a hinge, and an outer tube for holding the inner tube in its inner cavity part. A blood collecting needle to which a tube is connected is stored in the inner tube. The inner tube comprises an annular seat face which seats on the base end part of a hub formed integrally with the blood collecting needle when the blood collecting needle moves downward. An operation lever extending downward is installed at the side of the lid, and the end part of the operation lever is slightly projected outward. When the blood collecting needle is moved, the inner tube is pulled integrally with the tube by the annular seat face to be slid relative to the outer tube until the end part abuts on the lower end part of an operation hole. Then, the lid is closed and the blood collecting needle is stored in the inner tube.
摘要:
An outboard motor S has: a first drive shaft 31 interlocked with an internal combustion engine, a second drive shaft 32 interlocked with the first drive gear 31, an output gear mechanism 50 driven by the second drive shaft 32, a propeller shaft 17, and a gear case 13 holding the output gear mechanism 50 and the propeller shaft 17 and having a normally submerged gearing holding portion 21. The second drive shaft 32 is disposed rearward of the first drive shaft 31 with respect to a longitudinal direction. The gearing holding portion 21 has a tapered part 21a extending forward from a position corresponding to the second drive shaft 32 and having a front end 21c. The tapered part 21a is tapered toward the front. The disposition of the second drive shaft 32 rearward of the first drive shaft 31 enables forming the gear case 13 in a small size and reduces underwater resistance to the gear case 13.
摘要:
A waterproof lens-fitted photo film unit includes a lens-fitted photo film unit. Between a case body and a rear lid, the lens-fitted photo film unit is contained in a watertight manner. A separation opening is formed in the case body. A separation access chamber has an entrance connected to the separation opening, and closes the separation opening in a watertight manner in a position interior with reference to the case body. The separation access chamber includes a thin wall having a small thickness, and is breakable by a separator tool having a long shape with a small width.
摘要:
A radiation-sensitive resin composition including an alkali soluble resin and a quinonediazide compound is provided. The quinonediazide compound has the formula (1), for example: ##STR1## wherein, R.sup.1 to R.sup.6 are an alkyl, cycloalkyl or aryl group; a and b are an integer of 1 to 3; D.sup.1 and D.sup.2 are independently a hydrogen atom or a 1,2-quinonediazidosulfonyl group, provided that at least one of D.sup.1 is a 1,2-quinonediazidosulfonyl group; A is a bonding such as single bond; and x and y are an integer of 0 to 2. The composition is suitable as a positive resist, which effectively restrains the occurrence of scum, and excellent in developability, pattern shape, sensitivity, resolution and focus latitude.
摘要:
A crawler-belt vehicle is a half crawler vehicle having front wheels furnished with tires, and crawlers on a rear wheel side composed of crawler belts extending between intermediate wheels and rear wheels. The front wheels are larger in diameter than the intermediate wheels and the rear wheels and, hence, have a large ground-contact surface area. Thus, while the vehicle is running on snow, the front wheels are not apt to sink in the snow to a greater extent with the result that the turning characteristic and breakthrough characteristic of the vehicle can be improved. The intermediate wheels may be set to toe in so as to prevent detachment of the crawler belts which would otherwise occur when the sub-beams are slightly flexed or deformed in a lateral outward direction under loads applied thereto while the vehicle is traveling at high speeds on the snow. In order to reduce side slips of the crawler belts, an intermediate line extending parallel to, and passing substantially intermediately between, an axle centerline of the intermediate wheels and an axle centerline of the rear wheels is arranged to meet with a turning center of the right front wheel, and a turning center of the left front wheel at the same point.
摘要:
A hybrid integrated circuit for high output power having a conductive pattern on a ceramic substrate, a lead frame connected to said pattern, and electronic components mounted on said pattern wired with one another, has been found. When said conductive pattern has an inductor in a spiral shape, the same spiral pattern is conformed on the lead frame, and those two spiral patterns are overlapped. Thus, the resistance of the inductor is reduced since the conductive pattern and the lead frame pattern are connected parallel to each other. Then, a large current can be loaded to said inductance with only a small loss. As the material of the lead frame is cheap, the resultant hybrid integrated circuit can be manufactured at a lower cost.