摘要:
Disclosed is a photothermographic material containing a non-photosensitive silver salt, a photosensitive silver halide and a binder on a support, which comprises a nucleating agent and a surfactant represented by the following formula (F): [Rf-(Rc)n]m-Z Formula (F): wherein Rf represents a perfluoroalkyl group, Rc represents an alkylene group, and Z represents a group having an anionic group, cationic group, betaine group or nonionic group required for imparting surface activity, n is 0 or 1 and m is 1, 2 or 3. According to the present invention, there is provided a photothermographic material, in particular, for photomechanical processes, more specifically, for scanners and image setters, which shows low fog and high Dmax (maximum density), and exhibits little increase of fog even after the photosensitive material after development is stored for a long period of time.
摘要:
A golf club head provided with a head main body, and a face body fitted to a concave portion of the head main body. A caulking member is press-fitted into an aperture between an inner peripheral surface of the concave portion of the head main body and a peripheral surface of the face body, and the head main body and the face body are connected and fixed by plastic deformation of the caulking member. A contact area for positioning the face body, where the peripheral surface of the face body and the inner peripheral surface of the concave portion of the head main body directly contact, is arranged on at least a part of the concave portion.
摘要:
Disclosed are 13.alpha.-(3-substituted-2-hydroxypropionyloxy)baccatin compounds represented by the formula: ##STR1## wherein R.sup.1 represents a lower alkanoyl group or a protective group for hydroxy group; R.sup.2 represents a protective group for hydroxy group; R.sup.3 represents a lower alkanoyl group; R.sup.4 represents a substituted or unsubstituted benzoyl group; X represents a substituted or unsubstituted aryl group, a substituted or unsubstituted lower alkenyl group, or a substituted or unsubstituted lower alkynyl group; and A' represents a halogen atom, azido group or amino group, and processes for preparing the same.
摘要:
The present invention provides a thermoplastic resin composition improved in stability at the time of processing which comprises (a) 100 parts by weight of a polyphenylene ether resin and (b) 0.001-15 parts by weight of at least one 4-amino-2,2,6,6-tetramethylpiperidyl compound represented by the following formula (I) or (II): ##STR1## wherein R.sub.1 represents a hydrogen atom, an oxygen atom (oxy radical), a hydroxyl group, an alkyl group, a cycloalkyl group, an allyl group, a benzyl group, an aryl group, an alkanoyl group, an alkenoyl group, an alkyloxy group or a cycloalkyloxy group;R.sub.2 represents a hydrogen atom, an alkyl group or ##STR2## where X represents a direct bond, --O-- or --NH--, R.sub.4 represents a direct bond, a straight or branched alkylene group, an alkylidene group or an arylene group, R.sub.5 represents a hydrogen atom, an alkyl group, an aryl group, ##STR3## n represents an integer of 1 to 4, p represents an integer of 2 to 6, andR.sub.3 represents a hydrogen atom or an n valent organic group.
摘要翻译:本发明提供了加工时稳定性提高的热塑性树脂组合物,其包含(a)100重量份的聚苯醚树脂和(b)0.001-15重量份的至少一种4-氨基-2, 由下式(I)或(II)表示的2,6-六甲基哌啶化合物:其中R 1表示氢原子,氧原子(氧基),羟基 烷基,环烷基,烯丙基,苄基,芳基,烷酰基,烯酰基,烷氧基或环烷氧基; R 2表示氢原子,烷基或X,其中X表示直接键,-O-或-NH-,R 4表示直接键,直链或支链亚烷基,亚烷基或亚芳基,R 5 表示氢原子,烷基,芳基,n表示1〜4的整数,p表示2〜6的整数,R 3表示氢原子或n价的有机基团。
摘要:
Dynamic properties of vulcanized rubber are improved, without accelerating scorching property remarkably nor deteriorating flex-cracking resistance, by incorporating in a filler-containing natural or synthetic rubber composition, a dinitrodiamine derivative represented by the general formula ##STR1## wherein A represents a divalent aliphatic group, a divalent cycloaliphatic group, a divalent aromatic group or a group represented by the formula --CH.sub.2 --X--CH.sub.2 --, wherein X represents a cycloalkylene group or a phenylene group, provided that if A represents a cycloaliphatic group or an aromatic group, the two carbon atoms in A which are bonding to the nitrogen atom are not vicinal to each other; R and R' independently represent hydrogen atom or an alkyl group having 1-12 carbon atoms and may conjointly form a ring; and R" represents hydrogen atom, an aliphatic group, a cycloaliphatic group or an aromatic group. A process for producing the dinitrodiamine derivatives is also disclosed.
摘要:
Disclosed are a speaker diaphragm formed from a polyamide resin reinforced with continuous fiber reinforcements and/or long fiber reinforcements, and a production method therefor. The speaker diaphragm has high internal loss and excellent specific modulus so as to produce a large sound volume, and has reduced high frequency distortion, flat frequency characteristics and reduced sound distortion for the capability of faithfully reproducing low volume sound.
摘要:
A golf club comprising a club head having a mechanical impedance with a primary minimum value in a region of frequency in which the mechanical impedance of a ball to be struck takes a primary minimum value. Mechanical impedance is defined as the ratio of an external force applied to one point of the ball (or the club head) over the response speed of another point of the ball (or the head) when the force is applied.
摘要:
There are provided a frequency divider for dividing the frequency of the frequency signal produced by an oscillator, a counter for counting the number of the frequency divided fundamental signal, an input circuit for prestoring a time to be announced in a memory device so as to operate an alarm device, a comparator for comparing the time counted by the counter with a preset time, an input circuit supplied with a message so as to display the message concurrently with the operation of the alarm device, a character memory device for storing the applied message, and a display device for displaying the stored message. The content of the counter is compared with the time to be announced preset in the memory device. When a coincidence holds a buzzer is operated and at the same time a predetermined message preset in the character memory device is displayed on the display device.
摘要:
An arc welding method for manufacture of a welded steel pipe wherein the edges of a steel plate bent into a pipe shape are welded together on one side for forming a pipe and then the seam line of the thus formed pipe is welded by a second welding operation at the side opposite to the side where the first welding was performed. During such second welding, the weld is cooled forcedly from the side where the first welding was performed. Such forced cooling compensates for any physical effects accompanying the welding and imparts elevated toughness to both the weld metal and the heat affected zone.