Abstract: An insulating material comprised of a benzimidazole-based polymer layer and a fluorine-containing rubber layer. This material is heat-resistant and is especially useful for use in electric wires. To manufacture such wires, a varnish solution is prepared by dissolving partially polymerized benzimidazole-based polymers in a solvent, then adding a polymerization initiator thereto. Subsequently, an electric wire is soaked in the solution and heated to cross-link the benzimidazole-based polymers. By repeating this procedure, the electric wire is coated with any desired thickness of a benzimidazole-based polymer layer. This coated wire is further coated with a fluorine-containing rubber layer to obtain a heat-resistant electric wire that is also resistant to dielectric breakdown.

Abstract: A varnish-coated electric wire includes cured coatings of polybenzimidazole. The polybenzimidazole coatings are cured utilizing a polymerization initiator. The varnish-coated electric wire has a high heat-resistance.

Abstract: Disclosed herein is a method of manufacturing a wire harness protector (2), which can reduce the manufacturing cost with excellent productivity. A resin material having a black or gray tone, or a resin material containing an additive absorbing a laser beam is employed as a molding resin material. A hollow compact (1) is molded by NC blow molding. Then, the as-formed hollow compact (1) is cut with a laser beam, to manufacture a solid wire harness protector (2).

Abstract: A method of attaching a clip to a tubular blow molded article and the clip, the method comprising the steps of: preparing a clip including a clip body and a clip base which is provided at a base portion of the clip body and has a hollow and a number of through-holes communicating with the hollow; inserting the clip body of the clip into a cavity formed on a molding surface of the mold such that the clip base projects from the molding surface; setting softened synthetic resin to the mold; and bringing the synthetic resin into close contact with the molding surface of the mold at a blow pressure so as to deliver the synthetic resin to the hollow and the through-holes of the clip base such that the synthetic resin is filled into the hollow and the through-holes of the clip base, whereby the synthetic resin is molded to the blow molded article having the clip projecting from its outer peripheral surface.

Abstract: A heat-resistant roll for copying machine use which comprises a metallic roll having a surface which has been coated with a varnish containing polybenzimidazole as a major resin component, followed by curing, wherein the coating is conducted by means of rotational coating with application of pressure.

Abstract: A method of manufacturing a wire harness protector (2), which can reduce the manufacturing cost with excellent productivity. A resin material is employed to form a hollow compact (1) by numerically controlled (NC) blow molding. Then, the as-formed hollow compact (1) is cut with a laser beam to remove unnecessary portions, thereby manufacturing a solid wire harness protector (2).

Abstract: This invention relates to a filling grease composition for automobile wire harness connector which comprises a petroleum oil having an initial boiling point of 400.degree. C. or more and a gelling agent having the general formula: ##STR1## wherein R is a divalent aromatic group represented by a member: ##STR2## as essential components, and the content of said gelling agent ranging from 5 to 50% by weight on the basis of the whole composition.

Abstract: A card type fuse aimed at reducing production costs and improving a forming precision of an exothermic fusing portion 2a. The card type fuse comprises an insulation substratum 1, fuse circuits 2 arranged on the insulation substratum 1 and having a narrow exothermic fusing portion 2a, and a cover layer 3 covering fuse circuits 2. The cover layer 3 is made of a heat resisting film. The fuse circuits 2 are printed on the heat resisting film by means of a conductive paste. The insulation substratum 1 is made of a heat resisting thermoplastic resin suitable for an SMT. The insulation substratum 1 is integrally formed on the side having the fuse circuits on the heat resisting film.

Abstract: The injection molding machine is designed to produce molded pieces in a predetermined shape by moving back and forth a screw inside a cylinder so as to inject a molten molding material in the cylinder into a metal mold. The evaluation of molding stability of this injection molding machine is carried out in the following steps. First, an injection pressure imparted to the molten molding material by the screw at each screw position is detected, every time a molded piece is produced, and the injection pressure so detected is then integrated so as to obtain the work done of the injection molding machine. Following this, a molded piece so produced is weighed. Thus, a correlation between work done and the weights of molded pieces is statistically obtained on the basis of a plurality of corresponding data in relation to work done and the weights of molded pieces so obtained. Molding stability is then evaluated from the correlation so obtained.

Abstract: Thermoplastic polyester compositions comprising at least two groups of polybutylene terephthalate with substantially different intrinsic viscosity values and conventional additives for molding having an improved thermal flow capability under molding conditions expressed in such indices as heat flow (m cal/sec), enthalphy change .DELTA.Hm(Joule/gr) at the solidification of fused polymer, crystalline fraction (Xc), and the time of growth to (sec) of the primary nuclei of embryonic crystalline. The polymer compositions of the present invention result in a larger size of crystalline than the case of independent, single polymer and this enables to carry out injection moulding at about 20 degrees lower cylinder temperature than usual molding practice without sacrificing mechanical and thermal properties of the product.

Abstract: A cationic graft-copolymer comprising a unit derived from a cationic derivative of a water-soluble linear polymers having a hydroxyl groups, namely, a cationic polysaccharide of the following formula (1)[C.sub.6 H.sub.7 O.sub.2 (OH).sub.3-a (OX).sub.a ].sub.x H.sub.2 O (1)and the cationic derivative of polyvinylalcohol of the following formula (2) or the cationic derivative of the partial hydrolyzed polyvinylalcohol of the following formula (3)[CH.sub.2 CH(OH).sub.1-b (OX).sub.b ].sub.n (2)[CH.sub.2 CH(OH).sub.1-b-c (OX).sub.b (OAc).sub.c ].sub.n (3)and a unit derived from a polymerizable olefin compound of the following formula (4) ##STR1## (a, x, b, n, c, Ac, X, R.sub.4, R.sub.5, R.sub.6, and R.sub.7 are defined in claim 1-4); a process for preparing the same and a latex reagent made therefrom.

Abstract: A cationic dextran compound matrix-copolymer obtained by reacting with a polymerizable unsaturated acid or a polymerizable unsaturated acid and olefin compound a dextran derivative which is introduced cationic radicals thereinto. It is highly hydrophilic and a material having a high affinity for a living body and which is, therefore, useful for making contact lenses, intraocular lenses, artificial bones and blood vessels, etc.

Abstract: A dextran ester-olefin compound copolymer comprising a unit derived from a dextran ester of the following formula (1) ##STR1## and a unit derived from a polymerizable olefin compound of the following formula (2) ##STR2## (R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are defined in claim 1);A process for preparing the same and a shaped article made therefrom.

Abstract: A dextran-alkyl methacrylate graft composition consisting essentially of a dextran unit of the formula (1) ##SPC1##Wherein n is an integer of 5 to 150,000, and a poly(alkyl methacrylate) unit of the formula (2) ##EQU1## WHEREIN M IS AN INTEGER OF 50 TO 200,000 AND R is an alkyl group having 1 to 4 carbon atoms,And a process for producing the same.