Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Antistatic polymers, blends and articles

A technology of polymers and blends, used in coatings, gloves, clothing, etc., to solve problems such as unsuitability for gloves

Inactive Publication Date: 2003-09-03
NOVEON IP HLDG CORP
View PDF7 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as shown in the examples below, this graft copolymer is not suitable for making gloves by coagulant dipping

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0057] In order to illustrate the invention disclosed herein in more detail, the following examples are given. However, the examples should not be construed as limiting the invention in any way, which is defined by the appended claims.

[0058] the scope of the invention.

[0059] experiment method

[0060] 1. Equipment for measuring surface resistivity of antistatic films and coatings:

[0061] Monroe Electronics Model 272 with Monroe 96101A-1 Concentric Loop Probe (Complies with ASTM D257 and ESD 11.11 for 5Ib. Concentric Loop Probe).

[0062] experiment method:

[0063] Place gloves on insulating board.

[0064] Adjust the meter to "ohms / square @100v"

[0065] Place concentric rings on smooth glove surface; wait 30-60 seconds for reading.

[0066] Record ohms / square @100v.

[0067] 2. Measuring Static Decay

[0068] Equipment: Monroe 268A+ charged plate monitor and plug-in "banana plug" connected to AC ground.

[0069] experiment method:

[0070] Place the glove on ...

Embodiment 1-10

[0094] Example 1 - Step (1) Amine Emulsion Copolymer of 10 wt% MePEGMA, Acrylonitrile, Butadiene and Methacrylic Acid

[0095] 563 grams of demineralized water, 3.5 grams of n-dodecylmercaptan, 4.5 grams of 20% by weight of sodium n-dodecylbenzenesulfonate (as a surfactant) in water, and 0.3 grams of the sodium salt of polymerized alkylnaphthalenesulfonic acid such as Daxad TM 17 (as surfactant) was charged to a 3 liter rated pressure glass stirred reactor. Use 1.6 grams of n-dodecyl mercaptan, 167 grams of acrylonitrile, 120 grams of 50% by weight of an average DP~20 MePEGMA aqueous solution ("DP~20" means that the average number of ethylene glycol units is about 20), 346 grams of butadiene and 28 grams of methacrylic acid to make a monomer premix. By adding 0.8 g EDTA Na 3 (as a chelating agent), 0.5 grams of sodium iron edetate (as a reducing agent) and 2.3 grams of sodium formaldehyde sulfoxylate (as a reducing agent) were dissolved in 72 grams of water to make a reduci...

Embodiment 2-10

[0098] Example 2 - Latex Copolymer of Step (1) of 10 wt% MePEGMA, Styrene, n-Butyl Acrylate, Methyl Methacrylate and Methacrylic Acid

[0099] By mixing 150 grams of water, 0.6 grams of lithium hydroxide monohydrate, 11 grams of the disodium salt of dodecyl(sulfophenoxy)benzenesulfonic acid, 120 grams of styrene, 288 grams of n-butyl acrylate, 144 grams of methyl A monomer premix was prepared using methyl acrylate, 50 g of a 50% aqueous solution of MePEGMA having an average number of ethylene glycol units of about 20 (or in other words DP 20), 3 g of n-dodecyl mercaptan and 18 g of methacrylic acid . Initiator Solution-A was prepared by dissolving 1.2 grams of sodium persulfate in 18 grams of water. Initiator Solution-B was prepared by dissolving 1.5 grams of sodium persulfate in 60 grams of water. 480 grams of water, 0.12 grams of lithium hydroxide monohydrate and 1.33 grams of disodium salt of dodecyl(sulfophenoxy)benzenesulfonic acid were charged to a 3 liter reaction ves...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
surface tensionaaaaaaaaaa
particle diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

This invention relates to latex polymers and blends of such latex polymers used to produce gloves, coatings, binders for papers and nonwovens, and other articles having superior electrostatic dissipative properties. Such articles have a surface resistivity value below 1 x 10 <11> ohms / square per square, a static decay time of less than 1 second, or both. The blends comprise one or more (1) polymers (in latex, solution or dispersion form) of (a) at least one reactive macromer of at least one alkylene oxide having at least one functional group capable of free-radical transformation, (b) optionally at least one ethylenically unsaturated monomer having at least one carboxylic acid group, and (c) optionally one or more free radically polymerizable conomers, and (2) one or more other polymer latexes or dispersion of such polymers as natural rubber, conjugated-diene-containing polymers, hydrogenated styrene-butadiene triblock copolymers, cholorosulfonated polythylenes, ethylene copolymers, acrylic and / or methacrylic ester copolymers, vinyl chloride copolymers, vinylidene chloride copolymers, polysiobutylenes, polyurethanes, polyureas, and poly(urethaneurea)s. Also suitable for making antistatic articles such as gloves by coagulant dipping processes, even in the absence of said (2) other polymer latexes or dispersions, are (1) polymers (in latex, solution or dispersion form) of (a) at least one reactive macromer of at least one alkylene oxide having at least one functional group capable of free-radical transformation, wherein said macromer comprises less than about 10 % by weight of total polymer weight in the (1) latex, solution or dispersion polymers, (b) optionally at least one ethylenically unsaturated monomer having at least one carboxylic acid group, and (c) one or more free radically polymerizable comonomers.

Description

field of invention [0001] This invention relates to polymers and their emulsions, solutions, dispersions and blends for use in making gloves and other articles with superior static dissipating properties. Background of the invention [0002] Polymeric materials used in electrostatic discharge ("ESD," "static dissipative," or "antistatic") applications fall into two categories: rubber or thermoplastic. Typically, rubber and thermoplastic materials are used for different purposes and are manufactured using different production methods. ESD performance is achieved by incorporating hydrophilic moieties, such as various ethoxylates, or conductive fillers such as carbon black, metals or salts. Many of these systems have disadvantages. Additives that are essentially the same can have very variable results due to uneven dispersion in the matrix. They also have the potential to fail over time if they escape from the matrix and / or deteriorate. [0003] Achievin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/00C08F290/06C08L101/00C09D155/00
CPCC09D155/005C08F290/062C08F20/00
Inventor J·瓦赫恩J·B·卡纳狄S-J·R·苏A·V·鲁宾W·F·玛斯勒三世B·A·瓦伦逖诺
Owner NOVEON IP HLDG CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com