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Latex composition for dip-molding and dip-molded article prepared therefrom

A technology of dipping molding and composition, applied in the direction of carboxyl rubber coating, coating, etc., can solve the problems of water loss, increased glove defect rate, glove stickiness, etc., and achieve low viscosity, increase syneresis time, and excellent tensile strength Effect

Active Publication Date: 2021-02-26
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a low concentration of latex is used for the dip molding process, the syneresis phenomenon in which water is lost rapidly occurs severely in the formation of the glove film, and the prepared gloves also exhibit stickiness problems
This causes coagulation of the latex composition which in turn creates many pinholes which increases the defect rate of the glove

Method used

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  • Latex composition for dip-molding and dip-molded article prepared therefrom
  • Latex composition for dip-molding and dip-molded article prepared therefrom
  • Latex composition for dip-molding and dip-molded article prepared therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] Embodiment 1: The latex composition that is used for dip molding and the preparation of dip molding article

[0114] (Preparation of Carboxylic Acid Modified Nitrile Copolymer Latex)

[0115] A 10L high-pressure reactor equipped with a stirrer, a thermometer, a cooler and a nitrogen inlet and suitable for continuous addition of monomers, emulsifiers and polymerization initiators was replaced with nitrogen, and 3 parts by weight of sodium alkylbenzenesulfonate, 0.1 parts by weight of Parts (solid content) of potassium alkenyl succinate (Latemul ASK, dipotassium C16-18 alkenyl succinate, prepared by KAO, Japan), 0.5 parts by weight of tert-dodecyl mercaptan and 140 parts by weight of ion exchange Water was added to 100 parts by weight of a monomer mixture containing 30% by weight of acrylonitrile, 65% by weight of 1,3-butadiene, and 5% by weight of methacrylic acid, and the temperature was raised to 38°C.

[0116] Thereto was added 0.3 parts by weight of potassium persul...

Embodiment 2

[0123] Embodiment 2: The latex composition that is used for dip molding and the preparation of dip molding article

[0124] Except that 0.1 part by weight of potassium alkenyl succinate (AS200, potassium salt of alkenyl C16-18 succinate, manufactured by LG Household & Health Care Ltd., Korea) was used instead of 0.1 part by weight of potassium alkenyl succinate (LatemulASK) during polymerization. , prepared by KAO, Japan), a glove-shaped dip-molded article was prepared in the same manner as in Example 1 above.

Embodiment 3

[0125] Embodiment 3: The latex composition that is used for dip molding and the preparation of dip molding article

[0126] A glove-shaped dip-molded article was prepared in the same manner as in Example 1 above, except that 0.01 part by weight of potassium alkenyl succinate (Latemul ASK, manufactured by KAO, Japan) was used at the time of polymerization.

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Abstract

The invention relates to a latex composition for dip molding and a dip molding product prepared therefrom. More specifically, a dip-molded article having low syneresis, low viscosity and excellent tensile strength is prepared by dip-molding a carboxylic acid-modified nitrile copolymer latex which There is increased molecular stability due to the combined use of alkenyl succinates, which are emulsifiers which are crosslinkable with the latex and have a flexible molecular structure.

Description

technical field [0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2015-0164395 filed on November 24, 2015, the entire contents of which are incorporated by reference into this application. [0002] The present invention relates to a latex composition for dip molding and a dip molding product prepared therefrom, wherein the latex composition is capable of preparing a dip molding product having low syneresis, low viscosity and excellent tensile strength. Background technique [0003] Disposable rubber gloves used in daily life such as household labor, food industry, electronic industry, medical field, etc. are prepared by dip-molding natural rubber or carboxylic acid-modified nitrile copolymer latex. In recent years, carboxylic acid-modified nitrile gloves have attracted much attention in the disposable gloves market due to the allergy issues of natural rubber and unstable supply and demand issues. [0004] On the other hand, as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/04C08J5/00C08K5/09B29C41/14B29C41/00
CPCB29C41/00B29C41/14C08J5/02C08J2309/04C08F236/12C09D113/02B29C41/003B29K2007/00C08K5/098C08F236/06C08F220/44C08F220/06C08F2/26C08F2/38C08F4/30C08K3/22C08L13/02C08K5/09C08C19/34
Inventor 梁承勋余承旭韩政洙金廷垠
Owner LG CHEM LTD
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