110 results about "Nylon 11" patented technology

A multi-layer structure excellent in the barrier properties against alcohol gasoline, particularly hydrocarbon components, and also excellent in the interlayer adhesion, low-temperature impact resistance, heat resistance and chemical resistance is provided. The stractive is a multi-layer structure comprising two or more layers including at least a layer (a) comprising (A) nylon 11 and/or nylon 12 and a layer (b) comprising (B) a polyamide resin (nylon 9T) consisting of a dicarboxylic acid component and a-diamine component, with 60 to 100 mol % of the dicarboxylic acid component being a terephthalic acid and 60 to 100 mol % of the diamine component being a diamine component selected from 1,9-nonanediamine and 2-methyl-1,8-octanediamine, and preferably further including a layer (c) comprising (A) nylon 11 and/or nylon 12 or (C) nylon 6.

A copolymer of nylon 6 (caprolactam mer units) and nylon 12 (dodecanolactam mer units) and/or nylon 11 (undecanolactam mer units), which has been modified to provide improved physical properties, such as flex modulus, elastic modulus, and yield strength, serves as a layer of a hose suited to use in airbrake applications. The modified copolymer is resistant to degradation by zinc chloride and moisture and thus may be used as a peripheral layer of the hose in place of a conventional protective layer comprising a pure polyamide, such as nylon 11 or 12. Alternatively, the modified copolymer may be used as a tie layer for rendering a peripheral layer comprising nylon 12 or 11 compatible with a layer of nylon 6, allowing the less expensive nylon 6 material to comprise the bulk of the hose thickness. The layer includes a compatibilizer, such as a maleic anhydride grafted polyethylene, and may also include plasticizers and impact modifiers.

The invention provides a special nylon 66 composition for an automobile engine hood. The composition contains the following components by weight percent: 18-79% of nylon 66, 5-20% of copolymer nylon or long-chain nylon, 15-35% of alkali-free short glass fiber, 0-20% of mineral filler and 1.0-7% of auxiliaries, wherein the copolymer nylon is a polymer which is prepared through reaction, dehydration and polymerization of two or more monomer units, contains an amide group and is selected from one of or the mixture of more of a nylon6/66 copolymer, a nylon 6/12 copolymer and a nylon 6/10 copolymer; and the long-chain nylon is a polymer which is prepared through polymerization of monomers with carbon contents greater than or equal to 10 in polymer monomer units and other monomer units, contains an amide group and is selected from one of or the mixture of more of a nylon 11, a nylon 12 and a nylon 1010. The invention provides the special nylon 66 composition for the automobile engine hood and a preparation method thereof. The composition has the beneficial effects that the composition has quite high impact resistance and super strength and excellent chemical properties and dimensional stability; and products have smooth and clean surfaces and are cheap.

The present invention relates to a polymeric adhesive matrix and to a process for producing such a polymeric adhesive matrix, wherein the matrix comprises either: 1) a substantially uniform thickness nonwoven web comprising Nylon 12 or Nylon 11 polymer, or blends thereof, with up to 40 weight percent of another compatible thermoplastic polymeric material; or 2) a substantially uniform thickness fibrous or non-fibrous matrix comprising an amine-terminated low moisture absorbing polyamide, preferably an amine-terminated Nylon 12 or amine-terminated Nylon 11 polymer, or blends thereof, with up to 40 weight percent of another compatible thermoplastic polymeric material. The subject invention also relates to a multi-layer composite laminate comprising at least one layer of the polymeric adhesive matrix of the present invention positioned between a plurality of reinforcing fibrous layers impregnated with a binder resin and to a process for producing such a multi-layer composite laminate.

Disclosed is a composition comprising polyamide comprising nylon-6 and optionally nylon-6,66, nylon-66, nylon-610, nylon-612, nylon-11, nylon-12 and an ionomer comprising an ethylene carboxylic acid copolymer, wherein 30 to 90% of the total carboxylic acid functionalities are neutralized to salts with a mixture of zinc cations and cations of a second metal selected from Group 1 of the Periodic Table of the Elements wherein the salts comprise from 20 to 90% equivalents of zinc. Articles prepared from the composition have improved salt stress crack resistance when exposed to zinc chloride solutions.

The invention discloses an anti-attrition spacer capable of reducing frictional abnormal sound and an application of the anti-attrition spacer and belongs to the field of mechanical parts. The anti-attrition spacer takes a low-carbon alloy cold-rolled sheet as a base body, and carbonitriding thermal treatment and surface coating treatment of a polyfluorocomplex and/or a nylon 11 coating are successively performed on the low-carbon alloy cold-rolled sheet. The adhesive force between the coating and the base body in the anti-attrition spacer provided by the invention is large, and the coating has excellent anti-attrition effect and wear-resistant effect. The anti-attrition spacer is used between contact surfaces which rub with each other. With prolonging of frictional time, the coating on the anti-attrition spacer does not fall off, so that the durability of the anti-attrition spacer is ensured, the frictional coefficient between the anti-attrition spacer and the contact surfaces is effectively reduced, and the adhesive wear is reduced, and therefore, the frictional abnormal sound is further reduced. In particular, the anti-attrition spacer used in the field of automobiles can effectively relieve the frictional abnormal sound generated between the end face of a universal joint at the fixed end of a driving shaft and a contact surface of a hub bearing of an automobile.

The present invention relates to a multilayer tube comprising, in its radial direction from the outside inwards: an optional layer (1) made of nylon-11 or nylon-12 polyamide; an intermediate layer (2) comprising by weight, the total being 100%: 50 to 100% of at least one polyamide A1 of formula X,Y/Z or 6,Y2/Z, in which X denotes residues of an aliphatic diamine having from 6 to 10 carbon atoms, Y denotes residues of an aliphatic dicarboxylic acid having from 10 to 14 carbon atoms, Y2 denotes residues of an aliphatic dicarboxylic acid having from 15 to 20 carbon atoms, Z denotes at least one unit chosen from residues of a lactam, residues of an α,Ω-aminocarboxylic acid, the unit X1,Y1, in which X1 denotes residues of a diamine and Y1 denotes residues of a diacid, the weight ratios Z/(X+Y+Z) and Z/(6+Y2+Z) being between 0 and 15%, and 0 to 50% of nylon-11 or nylon-12 polyamide; an optional layer (3) made of nylon-11 or nylon-12 polyamide, with the condition that at least one of the layers (1) and (3) is present; the layers being successive and adhering to one another, the inner layer being the layer in contact with the fluid transported.

The invention discloses an optical fiber cable-used insulated cable material and a preparation method thereof. The material is prepared by the following raw materials by weight: 70 to 90 of XS-3-type resin, 20 to 30 of PTFE, 15 to 25 of nylon-11, 10 to 15 of polycarbonate, 12 to 18 of C5 petroleum resin, 20 to 30 of precipitated white carbon black, 10 to 15 of nano sepiolite, 1 to 2 of zinc oxide, 2 to 3 of magnesium oxide, 1 to 2 of zinc stearate, 1 to 2 of barium stearate, 8 to 12 of di(2-Ethylhexyl)-4,5-epoxytetrahydrophthalate, 5 to 10 of tributyl phosphate, 2 to 3 of monostearin, 4 to 8 of hydrated zinc borate, 5 to 10 of composite filler, and 0.5 to 1 of an antioxidant 1076. The cable material is good in flexibility at high and low temperature and has excellent physical and mechanical performance of creeping resistance, wear resistance, oil resistance, tearing resistance, aging resistance and the like; the flame-retardant effects are good, and the fire tongue can be quickly extinguished after the flame disappears, other material is not burnt, the smoke amount generated in the case of burning is small, and the use demands of the insulated material of an optical fiber cable protection layer can be met.

A laminated body having a thermoplastic resin layer (I) and a polyamide resin layer (II) which is made of nylon 11 and/or nylon 12. The thermoplastic resin layer (I) includes 100 parts by weight of a polyamide resin composition (A) and 0.1 to 10 parts by weight of a carbodiimide compound (B) having two or more carbodiimide groups. The polyamide resin composition (A) contains a polyamide resin (a-1) having diamine units 70 mol % or more of which are derived from m-xylylenediamine and dicarboxylic acid units 70 mol % or more of which are derived from a C₄ to C₂₀ α,ω-linear aliphatic dicarboxylic acid and a nylon 12 and/or nylon 11 component (a-2) in an amount of 5 to 95% by weight of the component (a-1) and 95 to 5% by weight of the component (a-2) each based on a total weight of the components (a-1) and (a-2). The laminated body is excellent in the barrier property, peeling resistance and mechanical properties such as strength, impact resistance and elongation, particularly in the barrier property to alcohol-containing fuels.

The invention discloses a modified nylon powder coating and a preparation method thereof. The preparation method comprises the following steps of: firstly preparing a polymerization product by performing polymerization reaction on the following main synthetic materials in parts by mass: 50 to 80 parts of caprolactam or nylon 6 resin, 20 to 50 parts of nylon 66 salt, nylon 66 resin or equal mole ratio of hexamethylene diamine and hexanedioic acid, and 0.02 to 1.7 parts of an auxiliary agent; and then preparing the modified nylon powder coating through the processes of extrusion modification, deep cooling crushing and treatment with a powder surface treatment agent. The auxiliary agent comprises an antioxidant, a nucleating agent and a molecular weight adjusting agent. The modified nylon powder coating prepared by the method is lower in melting point, simple in process control and stable in product quality, can partially substitute nylon 11 and nylon 12 powder products, can effectively reduce the using cost of nylon powder, is favorable for application popularization of the nylon powder, and has a great market potential.

The invention belongs to the technical field of materials and discloses a semi-conductive nylon strap for cable shielding. The semi-conductive nylon strap is prepared from the following raw materials in parts by weight: 40-80 parts of nylon 11 resin, 10-20 parts of nylon 1010 resin, 5-10 parts of nylon 6 resin, 10-20 parts of linear low density polyethylene, 8-16 parts of maleic anhydride grafted polyethylene, 0.6-0.8 part of a coupling agent, 18-25 parts of a filler, 0.4-0.6 parts of an antioxidant, 2-6 parts of a flame retardant, 10-15 parts of a conducting matter, 20-25 parts of reinforcing fibers and 10-18 parts of a surface modifier, wherein the ratio of the nylon 11 resin to the nylon 1010 resin to the nylon 6 resin to the linear low density polyethylene to the maleic anhydride grafted polyethylene is 8:2:1:2:1.6. The semi-conductive nylon strap disclosed by the invention has the beneficial technical effects of high tensile/bending/cantilever notch impact strength, small electric resistance, good high temperature stability, easy processing and the like, and is capable of eliminating static electricity.

The invention provides a special nylon 6 composition for an automobile engine hood. The composition contains the following components by weight percent: 19-79% of nylon 6, 5-20% of copolymer nylon or long-chain nylon, 15-35% of alkali-free short glass fiber, 0-20% of mineral filler and 1.0-6% of auxiliaries, wherein the copolymer nylon is a polymer which is prepared through reaction, dehydration and polymerization of two or more monomer units, contains an amide group and is selected from one of or the mixture of more of a nylon6/66 copolymer, a nylon 6/12 copolymer and a nylon 6/10 copolymer; and the long-chain nylon is a polymer which is prepared through polymerization of monomers with carbon contents greater than or equal to 10 in polymer monomer units and other monomer units, contains an amide group and is selected from one of or the mixture of more of a nylon 11, a nylon 12 and a nylon 1010. The invention provides the special nylon 6 composition for the automobile engine hood and a preparation method thereof. The composition has the beneficial effects that the composition has quite high impact resistance and super strength and excellent chemical properties and dimensional stability; and products have smooth and clean surfaces and are cheap.

The purpose of the present invention is to provide a thermoplastic resin composition having excellent rigidity and impact strength and a method for producing the same. The thermoplastic resin composition is obtained by mixing a polyolefin resin (such as a polypropylene resin), a polyamide resin (such as nylon 11 resin), and a compatibilizer (such as maleic anhydride-modified EPR, maleic anhydride-modified EBR). The thermoplastic resin composition is characterized in having a resin phase separate structure as observed under an electron microscope, wherein the resin phase separate structure consists of a continuous phase and a disperse phase which is dispersed in the continuous phase, there is a microdisperse phase in the disperse phase, and the average diameter of the microdisperse phase is 5 to 1,200 nm.

The invention discloses a preparation method and a test method of a composite material modified by nylon 11-based hollow glass bead. The preparation method comprises the steps of firstly putting nylon 11 and hollow glass beads into an oven at 80 DEG C and 0.09 MPa of the pressure of a vacuum pump to be dried for 12 hours in vacuum; respectively proportioning the nylon 11 and the hollow glass beads according to the required volume required in the formula; preparing materials by an extruder; drying the extruded materials; and injecting the materials to be formed. The test method comprises the steps of filling the nylon 11 with the hollow glass beads to be modified, extruding, pelletizing and preparing the composite material into a standard sample in a molten state by a double-screw extruder, and then testing various kinds of mechanical properties and the crystallization behavior of the sample. By analyzing the results, the influence of the glass beads of different content on the mechanical property and the crystallization behavior of the sample can be achieved, and the nylon 11-based modified composite material with better performance can be prepared.

A process for preparing copolymer nylon "613" or "1013" includes such steps as dissolving hexadiamine or decanediamine and brazilic acid in alcohol, neutralizing reaction at 40-120 deg.C while stirring for 2-6 hr, educing out salt, filtering, washing with alcohol, drying to obtain their salts, loading them along with molecular weight regulator, trigger and antiageing agent into a polymerizing reactor, reaction at 210-290 deg.C and 0.4-2.5 MPa for 2-10 hr, and vacuum reaction at 0--0.05 MPa for 0.5-2 hr. The resultant products features higher flexibility and dissolving resistance, and low cost.

The invention discloses a super-tough green nylon 11 alloy prepared by using an in-situ process and a preparation method thereof. According to the invention, the prepared nylon 11 alloy has high toughness, low temperature resistance, low water absorption and low oil absorption, cost for the alloy can be reduced by about 26%, and the nylon 11 alloy has a great industrial application value. Raw materials for the super-tough nylon 11 alloy provided by the invention comprise, by weight, 55 to 95 parts of nylon 11, 5 to 45 parts of a copolymer of ethene and octene, 0.01 to 1 part of an initiator, 0.1 to 6 parts of glycidyl methacrylate and 0.1 to 4 parts of high density polyethylene-grafted maleic anhydride, wherein the sum of the weight parts of nylon 11 and the copolymer of ethene and octene is 100. Nylon 11 used in the invention is long-carbon-chain soft nylon synthesized with castor oil as a raw material and is a bio-based material. The prepared super-tough nylon 11 alloy in the invention has the characteristics of greenness and environment friendliness and has excellent comprehensive properties.