Abstract:
The present invention provides a method for reducing dust deposits on polyolefin films. Further subjects of the invention are the use of a polyetheresteramide for reducing dust deposits on polyolefin films and coextruded multilayer polyolefin films containing a polyetheresteramide at least in one outer layer.
Abstract:
An anionic surfactant having a thermal weight loss initiation temperature of at least 250 °C is incorporated with a thermoplastic resin comprising a graft copolymer formed by graft-polymerizing an ethylenically unsaturated monomer onto a rubber trunk polymer obtained by emulsion polymerization using a carboxylic acid-type surfactant. As a result, it is possible to obtain an antistatic resin composition which can be effectively produced on an industrial scale and can provide a shaped product excellent in permanent antistatic property and free from haze or discoloration even when processed under severe processing conditions.
Abstract:
La présente invention concerne une composition de polymères antistatiques et plus précisément une composition comprenant un polymère thermoplastique (A) et un copolymère (B) à blocs polyamides et blocs polyéthers comprenant essentiellement des motifs oxyde d'éthylène -(C2H4-O)- le copolymère (B) ayant une température de fusion comprise entre 80 et 150°C. Elle est utile pour les polymères (A) qui sont thermosensibles ou qui se transforment à basse température.
Abstract:
A cross-linkable conductive composition containing a soluble conductive polymer (a) having sulfo and/or carboxyl groups and a compound (b) having at least two functional groups capable of reacting with the sulfo and/or carboxyl groups of the polymer (a).
Abstract:
A polyetheresteramide having good heat resistance, permanently antistatic property and superior compatibility with thermoplastic resins and a resin composition containing the polyetheresteramide are disclosed. The polyetherester-amide consists essentially of a polyamide oligomer with carboxylic chain ends having a number average molecular weight between 200 to 5,000 and a bisphenol compound with oxyalkylene units having a number average molecular weight between 300 to 3,000. Antistatic resin compositions with good antistatic property and heat resistance are obtained from compositions comprising 3 to 40 % by weight of the polyetheresteramide and 60 to 97 % by weight of thermoplastic resins. The antistatic resin compositions can contain as compatibilizers vinyl polymers having functional groups such as carboxyl and epoxy groups or block polymers containing polyolefin blocks and aromatic vinyl polymer blocks. To further improve the antistatic property of the resin composition a composition comprising at least 97 % by weight of the polyetheresteramide and at least 0.01 % by weight of an alkali metal or alkaline earth metal halide can be used in the same way as the polyethersteramide.
Abstract:
A modifier for resin and rubber of which an active ingredient is a reaction product of a styrene-maleic anhydride copolymer (A) with a poly(alkylene oxide) monoalkyl ether (B), and/or a metal salt thereof, which modifier improves processability and properties of resins or rubbers. For example, it provides resins or rubbers with antistatic properties. It also enhances dispersibility of additives, e.g., a flame retardant or fillers incorporated in the resin or the rubber, provides resins or rubbers with, for example, excellent flame retardancy and prevents the additive or the filler from blooming.
Abstract:
The subject invention relates to an electrostatic dissipative polymeric composition. It has been found that the incorporation of a polyimide into a base polymer will enhance the electrostatic dissipative properties (ESD) of the composition comprising a base polymer and an ESD additive. This enhancement of the ESD properties is illustrated by the decrease in both the surface resistivity and volume resistivity. In compositions employing the same ESD additive this enhancement provided by the incorporation of the polyimide could allow a reduction of electrostatic dissipative additive required to achieve acceptable results. Further, the improved properties could allow the material to be adopted for specific applications that cannot be normally achieved without the enhanced properties.
Abstract:
The invention provides a resin composition capable of insuring sufficient antistaticity and ionic conductivity through incorporation of a specific high-molecular compound and an electrically conductive filler each in a small proportion. The antistatic and ionically conductive resin composition of the invention comprises:
(A) 100 parts by weight of a resin, (B) 0.1 to 70 parts by weight of a high-molecular compound having an average molecular weight of not less than 10,000 as prepared by reacting a polyoxyalkylene glycol with at least one member of the class consisting of polycarboxylic acids, polycarboxylic acid lower alkyl esters, polycarboxylic acid anhydrides and organic polyisocyanates and (C) 0.1 to 30 parts by weight of an electrically conductive filler.
Abstract:
A transparent polyether-ester amide having a permanently antistatic property is obtained by copolymerizing (a) an aminocarboxylic acid, a lactam, or a salt derived from a diamine and a dicarboxylic acid; (b) a dial of the formula: and wherein R 1 and R 2 are an ethylene oxide or propylene oxide group, Y is covalent bond, alkylene, alkylidene, cycloalkylidene, arylalkylidene, 0, SO, SO 2 , CO, S, CFz , C(CF 3 ) 2 or NH, X is H, alkyl, halogen, sulfonic acid or salt thereof, ℓ is 0 or an integer of 1 -4, and m and n an integer of 1 - 15; (c) a poly(alkylene oxide)glycol or a diol of the formula: wherein R 3 is alkylene, alkylidene, cycloalkylidene or arylalkylidene; and (d) a dicarboxylic acid; wherein the content of the polyether-ester units is 10 to 90 wt.%. The polyether-ester amide is used preferably as a blend thereof with a graft copolymerization product formed by graft-polymerizing (a) a rubbery polymer with (b) a monomer mixture of a methacrylic or acrylic acid ester, an aromatic vinyl monomer and an optional vinyl cyanide monomer, this product having a refractive index approximately similar to that of the polyether-ester amide.
Abstract:
A transparent polyether-ester amide having a permanently antistatic property is obtained by copolymerizing (a) an aminocarboxylic acid, a lactam, or a salt derived from a diamine and a dicarboxylic acid; (b) a dial of the formula:
and wherein R 1 and R 2 are an ethylene oxide or propylene oxide group, Y is covalent bond, alkylene, alkylidene, cycloalkylidene, arylalkylidene, 0, SO, SO 2 , CO, S, CFz , C(CF 3 ) 2 or NH, X is H, alkyl, halogen, sulfonic acid or salt thereof, ℓ is 0 or an integer of 1 -4, and m and n an integer of 1 - 15; (c) a poly(alkylene oxide)glycol or a diol of the formula: wherein R 3 is alkylene, alkylidene, cycloalkylidene or arylalkylidene; and (d) a dicarboxylic acid; wherein the content of the polyether-ester units is 10 to 90 wt.%. The polyether-ester amide is used preferably as a blend thereof with a graft copolymerization product formed by graft-polymerizing (a) a rubbery polymer with (b) a monomer mixture of a methacrylic or acrylic acid ester, an aromatic vinyl monomer and an optional vinyl cyanide monomer, this product having a refractive index approximately similar to that of the polyether-ester amide.