摘要:
In a sheet discharger with a simple structure, the subsequently discharged sheet can be stored under such a condition that this subsequently discharged sheet is overlapped on the rear surface of the previously discharged sheets. The sheet discharger includes a vertical type sheet discharge tray inclined backwardly along an upper direction; an discharge roller apparatus having a front side discharge roller and a rear side discharge roller, which are arranged at a lower end portion of the vertical type sheet discharge tray. The vertical type sheet discharging tray includes a rear surface supporting member for supporting a rear surface of an discharged sheet, a bottom member for supporting a lower end of the discharged sheet, and a front surface supporting member for defining a forward position of the lower end of the discharged sheet. The bottom member is arranged in front of said discharge roller apparatus, further includes sheet rear end position control means for positioning a rear end of a sheet discharged to the vertical type sheet discharge tray over said bottom member.
摘要:
The silicone rubber composition of the present invention comprises (A) an organopolysiloxane obtained by mixing and heating an organopolysiloxane having a silanol group at both ends of the molecular chain and a silane or a siloxane having two hydrolyzable groups in the molecule, (B) a finely divided silica, and (C) a curing agent. The composition, wherein the content of low-molecule siloxanes is remarkably constrained, is quite useful in the application wherein low-molecular siloxanes are obnoxious, for example, in the application of electrical contacts and parts used adjacent thereto, roll materials of copying machines, gaskets for construction, etc.
摘要:
A manufacturing method of organosilanes having silanol groups which is characterized by mixing organoalkoxy silanes, having at most a 20 ppm content of chlorine, expressed by the general chemical formula (1) below:Si(R.sup.1).sub.m (R.sup.2).sub.n (OR.sup.3).sub.k (1)wherein each of R.sup.1 and R.sup.2 is either a substituted or unsubstituted monovalent hydrocarbon group; R.sup.3 is an alkyl group of 1 to 4 carbon atoms; subscripts m and n are 0, 1, 2, or 3; k is either 1 or 2; and the sum of subscripts m+n+k=4, with ion-exchanged water having an electroconductivity of at least 10.sup.10 M.OMEGA., then further adding a macro-porous cation-exchange resin with a pore volume measured by the mercury injection method of at least 0.1 ml/g to the said mixture, followed by stirring of the mixture and removal of the cation-exchange resin. According to the present invention, organosilanes having silanol groups which are useful as a dispersing agent in silicone rubbers may be obtained by a simple process from organoalkoxy silanes, such as relatively inexpensive dimethoxy dimethyl silane.
摘要翻译:具有硅烷醇基的有机硅烷的制造方法,其特征在于混合由通式(1)表示的含有至多20ppm含量的有机烷氧基硅烷:Si(R 1)m(R 2)n(OR 3)k (1)其中R1和R2各自为取代或未取代的单价烃基; R3是1-4个碳原子的烷基; 下标m和n分别为0,1,2或3; k是1或2; 和下标m + n + k = 4的总和,其中离子交换水的电导率至少为1010M欧米茄,然后进一步加入具有通过汞注入法测量的孔体积的大孔阳离子交换树脂 至少0.1ml / g,然后搅拌混合物并除去阳离子交换树脂。 根据本发明,可以通过有机烷氧基硅烷如相对廉价的二甲氧基二甲基硅烷的简单方法获得在硅橡胶中用作分散剂的具有硅烷醇基的有机硅烷。
摘要:
A silicone rubber composition comprising (A) an organopolysiloxane, (B) an organic peroxide and (C) carbon black cures under anaerobic conditions into silicone rubber having improved physical properties. A composition further comprising (D) an organopolysiloxane copolymer consisting essentially of M and Q units in a molar M/Q ratio of 6/10 to 9/10 forms an anaerobic adhesive composition which is a useful sealant.
摘要:
A room temperature vulcanizable silicone rubber composition is provided, comprising (A) an organopolysiloxane containing at least one amino group represented by --R.sup.1 NH.sub.2 in a molecule and having a viscosity of from 25 to 500,000 cst at 25.degree. C. wherein R.sup.1 is a divalent C.sub.1-20 hydrocarbon group or a divalent C.sub.1-20 organic group containing an ether bond or --NH-- bond, (B) an organic silicon compound of the formula: OCNR.sup.2 SiR.sub.a.sup.3 X.sub.3-a wherein R.sup.2 has the same meaning as R.sup.1, R.sup.3 is a monovalent C.sub.1-10 hydrocarbon group, X is an alkoxy, ketoxime, alkenyloxy or acyloxy group, and a is 0 or 1, and (C) a curing catalyst. The composition cures at room temperature, providing a product having improved heat resistance, weather resistance and adhesion.
摘要:
A curable composition comprises an organopolysiloxane-polyoxyalkylene block copolymer terminated at both ends of a molecular chain with a lower aliphatic unsaturated group and consists essentially of organopolysiloxane units having a main chain of the formula, (R.sup.1 R.sup.2 SiO)m, and polyoxyalkylene units of the formula, (R.sup.3 O)n. The organopolysiloxane units and the polyoxyalkylene units are bonded through R.sup.1 R.sup.2 SiR.sup.4 groups, wherein R.sup.1 and R.sup.2 independently represent an unsubstituted or substituted monovalent hydrocarbon group except for an aliphatic unsaturated group, R.sup.3 and R.sup.4 independently represent a divalent hydrocarbon group, and m and n are, respectively, defined integers. The composition further comprises an organohydrogenpolysiloxane having at least two .tbd.SiH groups in one molecule and a curing agent therefor. A cured product obtained from the composition is a silicone rubber elastomer having properties inherent to the silicone rubber but is hydrophilic in nature.
摘要翻译:可固化组合物包含在具有低级脂族不饱和基团的分子链的两端封端的有机聚硅氧烷 - 聚氧化烯嵌段共聚物,并且基本上由具有下式主链(R1R2SiO)m的有机聚硅氧烷单元和下式的聚氧化烯单元组成: (R3O)n。 有机聚硅氧烷单元和聚氧化烯单元通过R 1 R 2 SiR 4基团键合,其中R 1和R 2分别独立地表示除脂族不饱和基团之外的未取代或取代的单价烃基,R 3和R 4分别表示二价烃基,m和n分别表示 ,定义整数。 组合物还包含在一个分子中具有至少两个3BOND SiH基团的有机氢聚硅氧烷和其固化剂。 由该组合物获得的固化产物是具有硅橡胶固有性质但是具有亲水性的硅橡胶弹性体。
摘要:
This invention relates to a process of producing sarcosine oxidase by cultivating microorganisms belonging to genus Streptomyces and possessing an ability to produce sarcosine oxidase, and collecting sarcosine oxidase from the obtained culture. As an example of said microorganisms used in this invention, Streptomyces sp. KB210-8SY discovered by the prevent inventor is known.Said microorganisms are cultivated usually by using a culture medium, and from the obtained culture, sarcosine oxidase is isolated and purified.
摘要:
A foaming polysiloxane composition providing excellent expansion ratio and expansion control comprising: (A) 100 parts by weight of an .alpha., .omega.-dihydroxyorganopolysiloxane, (B) 0.01-50 parts by weight of an organopolyhydroxypolysiloxane, (C) an organopolyhydrogensiloxane wherein 1 molecule contains at least 2 units represented by the general formula: ##EQU1## and in such quantity that SiH lies within the range of 0.5-30 mole per mole of total silanol groups in components A and B, (D) platinum or platinum compounds in a quantity of 0.1-200 ppm calculated as platinum metal per total weight of said components A, B and C, and (E) an organosilicon compound with acetylenic unsaturated groups in a quantity of 0.001-10 parts by weight per 100 parts by weight of components A,B,C and B; and a cured product thereof were disclosed.
摘要:
Disclosed herein is a foamable organopolysiloxane composition which comprises an organopolysiloxane base polymer containing a vinyl group-containing organopolysiloxane, organohydroxypolysiloxane, and organohydrogenpolysiloxane, and a specific siloxane copolymer containing an alkenyloxysilyl group. The composition readily foams and cures at room temperature to give a silicone rubber foam of high strength, which is useful as a filler and sealant for buildings.
摘要:
A room temperature-curable silicone rubber composition having improved heat-resistance is disclosed. The composition is formulated without any siliceous fillers as a reinforcing inorganic filler conventionally used in silicone compositions and, instead, comprises carbon black as a reinforcing filler. Namely, the composition comrises a major amount of a hydroxy-containing organopolysiloxane admixed with a minor amount of an organosilicon compound having at least two hydrolyzable groups per molecule, a curing catalyst, carbon black and iron oxide.