HEAT SENSITIVE HIGH MOLECULAR WEIGHT RESISTOR

专利名称：HEAT SENSITIVE HIGH MOLECULAR WEIGHT

RESISTOR

发明人：WATARU SHIMOTSUMA,AKIRA

MIZOGUCHI,TOSHIO SHIMIZU

申请号：US3553108D申请日：19670320公开号：US3553108A公开日：19710105

摘要：1,188,852. P.V.C. compositions. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 13March, 1967 [23 March, 1966; 16 May, 1966], No. 11699/67. Heading C3P. [Also in DivisionH1] In the preparation of a plastic N.T.C. resistor an insulating thermoplastic resin hasadded thereto 6 to 50 wt. per cent of a conductive plasticizer which is an aromatic orheterocyclic quaternary ammonium perchlorate including a plasticizing radical. Preferrednuclei containing the quaternary nitrogen atom are pyridine, quinoline, imidazoline, orimidazole nuclei. It is stated that the following are suitable thermoplastic resins: polyvinylchloride, polyvinyl acetate, polyvinylidene chloride, polyamides, cellulose esters, acrylateesters, acrylonitrilebutadiene copolymers, polyurethanes, acrylate ester-acrylonitrilecopolymers, flexible cured epoxy resins, polyethylene, polypropylene, and ethylene-propylene copolymers. In each specific example the resin is polyvinylchloride and is mixedwith dioctyl phthalate or pentaerythritol, an alkaline earth metal stearate, stearic acidand the quaternary ammonium perchlorate. Specific perchlorates are: (a) 1-[1-hydroxy-2-(4 : 6 - dinonanoyloxy - 1 : 3 : 5 - triazin - 2 - yloxy) ethyl]-2-methyl-3-benzyl-imidazoliumperchlorate; (b) 1-[3-(2 : 4 - didecylcarboxyphenylamido) propyl] - 2 - ethyl - 3 - benzyl -

imidazolium perchlorate; (c) (2-n-octylcarboxyphenyl) - amidoethyl - di - # - hydroxyethyl- ammonium perchlorate; (d) 1-[2-tris- (decylcarboxymethyl) ethylcarboxymethyl] - 2 -ethyl - 3 - # - hydroxyethyl - imidazolium perchlorate. In electrical tests the N.T.C.material is formed into 50 x 50 x 1 mm. sheets. To measure the impedance againsttemperature characteristic silver paint electrodes are formed at the centre of the majorfaces of a sheet. To measure the thermal stability of the impedance a compositestructure is moulded in which the sheet of N.T.C. material is sandwiched between 30 x 30mm. electrodes of 20 mesh copper net and 50 x 50 x 1 sheets of insulating polyvinylchloride.

申请人：MATSUSHITA ELECTRIC INDUSTRIAL CO. LTD.

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