摘要:
A moisture and temperature resistant electrical connector has a body (110) containing a terminal (116), for sealingly connecting transmission means (122) and containing a gel-like sealant composition disposed along or adjacent to the terminal within the connector body. The gel-like sealant composition includes an elastomeric thermoplastic polymer and an extender for the polymer. The extender comprises a major portion by weight of the composition and the polymer comprises a minor proportion by weight of the composition. The elastomeric thermoplastic polymer comprises a first elastomeric thermoplastic polymer and a second elastomeric thermoplastic polymer. The melt viscosity of the second polymer is at least about 50 times greater than the melt viscosity of the first polymer. The weight ratio of the second polymer to the first polymer is from about 1:20 to about 1:5.
摘要:
Matériaux pour garnitures de joints susceptibles d'être exposés prématurément à l'eau de pluie et résistant à celle-ci, contenant: des dispersions polymère aqueuses (I), des éthers cellulosiques non ioniques (II) appartenant au groupe comprenant l'hydroxyéthylcellulose, l'hydroxyéthylméthylcellulose, l'hydroxypropylméthylcellulose et l'hydroxypropylcellulose, et, le cas échéant, des adjuvants courants, tels que charges, pigments, agents de ramollissement, diluants, épaississants, agents anti-mousse, auxiliaires dispersants, régulateurs de pH et agents de conservation et d'anti-vieillissement, préparées par mélange intime de (I) avec les autres constituants. Afin de pouvoir incorporer (II) en des quantités se situant au-dessus de la limite de solubilité, les matériaux pour garnitures de joints sont caractérisés en ce que (II) sous forme retardée est mis en suspension dans de petites quantités d'eau et ajouté et incorporé après mise en suspension.
摘要:
A sealing material is provided, which maintains excellent sealing property for a long period of time. The sealing material of the invention is characterized by being prepared by vulcanizing and foaming a mixture containing a rubber component containing a copolymer rubber of ethylene, an ±-olefin having 3 or more carbon atoms, and a conjugated diene, a vulcanizing agent, and a blowing agent, wherein the mixture contains a thermoplastic resin having a melting point of 80°C or less.
摘要:
A sealing material is provided, which maintains excellent sealing property for a long period of time. The sealing material of the invention is characterized by being prepared by vulcanizing and foaming a mixture containing a rubber component containing a copolymer rubber of ethylene, an α-olefin having 3 or more carbon atoms, and a conjugated diene, a vulcanizing agent, and a blowing agent, wherein the mixture contains a thermoplastic resin having a melting point of 80°C or less.
摘要:
A moisture and temperature resistant electrical connector has a body (110) containing a terminal (116), for sealingly connecting transmission means (122) and containing a gel-like sealant composition disposed along or adjacent to the terminal within the connector body. The gel-like sealant composition includes an elastomeric thermoplastic polymer and an extender for the polymer. The extender comprises a major portion by weight of the composition and the polymer comprises a minor proportion by weight of the composition. The elastomeric thermoplastic polymer comprises a first elastomeric thermoplastic polymer and a second elastomeric thermoplastic polymer. The melt viscosity of the second polymer is at least about 50 times greater than the melt viscosity of the first polymer. The weight ratio of the second polymer to the first polymer is from about 1:20 to about 1:5.
摘要:
Beschrieben werden frühregenfeste Fugendichtungsmassen enthaltend - wäßrige Polymerdispersionen (I) - nicht-ionische Celluloseether (II) aus der von Hydroxyethyl-, Hydroxyethylmethyl-, Hydroxypropylmethyl und Hydroxypropylcellulose gebildeten Gruppe - Füllstoffe sowie - gegebenenfalls übliche Zusätze wie Pigmente, Weichmacher, Extender, Verdickungsmittel, Entschäumer, Dispergierhilfsmittel, pH-Regulatoren sowie Konservierungs- und Alterungsschutzmittel und herstellbar durch inniges Vermengen von (I) mit den übrigen Bestandteilen. Um (II) in Mengen einbringen zu können, die über der Löslichkeitsgrenze liegen, sind die Fugendichtungsmassen dadurch gekennzeichnet, daß (II) in retardierter Form abgemischt mit den Füllstoffen zugegeben und untergemischt wird.
摘要:
The invention relates to sealant compositions containing vegetable or animal oil, a mineral oil, a filler and a substance which is able to reduce the specific weight, as ingredients. The sealant compositions according to the invention are characterized in that they contain silicas and a surfactant. Furthermore the invention relates to a process for the preparation of the above disclosed sealant compositions, characterized in that a vegetable or animal oil, a mineral oil, silicas and a surfactant are throughly blended under obtaining a homogeneous blend, whereupon to the obtained blend under vigorous stirring there are added a substance for reducing the specific weight, filler and optionally a dye, wherein the stirring is continued until a homogeneous sealant composition is obtained.
摘要:
Materials not releasing gaseous organic materials during use are used as a dry-type sealing material such as a gasket disposed upon mounting an air filter to an opening of a ceiling or the like, a wet-type sealing material filled and used in a gap for connecting wall materials or partitionings, a vinyl chloride sheet or a vinyl chloride cloth as a facing material for walls and floors. Specifically, a carboxylic acid ester having a molecular weight of not less than 400 is used as a plasticizer, a phenolic compound having a molecular weight of not less 300 is used as an antioxidant, an aliphatic hydrocarbon having not less than 19 carbon atoms (for example, microcrystalline wax) is used as a lubricant, and an alkylamine ethylene oxide adduct having a molecular weight of not less than 350 is used as an antistatic agent.
摘要:
Materials not releasing gaseous organic materials during use are used as a dry-type sealing material such as a gasket disposed upon mounting an air filter to an opening of a ceiling or the like, a wet-type sealing material filled and used in a gap for connecting wall materials or partitionings, a vinyl chloride sheet or a vinyl chloride cloth as a facing material for walls and floors. Specifically, a carboxylic acid ester having a molecular weight of not less than 400 is used as a plasticizer, a phenolic compound having a molecular weight of not less 300 is used as an antioxidant, an aliphatic hydrocarbon having not less than 19 carbon atoms (for example, microcrystalline wax) is used as a lubricant, and an alkylamine ethylene oxide adduct having a molecular weight of not less than 350 is used as an antistatic agent.