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A kind of PPU glue and the production technology that utilizes this Ppu glue to prepare dipped gloves

A preparation process and water-based technology are applied in the field of PPU glue and the production technology field of using the PPU glue to prepare dipped gloves, which can solve the problems of user allergies, human injury, insufficient use time, etc., and achieve the improvement of production flexibility and production. Efficient effect

Active Publication Date: 2019-07-19
ZHANGJIAGANG SIQI SCI & TECH LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing water-based coatings for dipping gloves use water-based polyurethane PU emulsion, nitrile emulsion or natural latex as the raw material for dipping, but the residues of butadiene and acrylonitrile monomers in the nitrile emulsion have a great impact on the human body. The harmful effects of natural latex, water-soluble protein residues in natural latex can easily cause allergies to users, and the vulcanization process is inevitable in the production of nitrile emulsion and natural latex gloves, and the nitrosamines produced in the vulcanization process will remain in the product , and nitrosamines are internationally recognized as one of the substances that are extremely harmful to the human body
Water-based polyurethane-dipped gloves are superior to nitrile latex and natural latex in terms of environmental protection and human adaptability, and the gloves are more comfortable to wear, moisture-wicking, breathable and heat-dissipating, and have better grip than oily-dipped gloves. However, their durability is lower. It is not as good as nitrile latex and oily polyurethane dipped gloves. In order to further improve the level of water-based polyurethane dipped gloves on the basis of ensuring environmental protection, people hope to further improve the abrasion resistance of water-based polyurethane dipped gloves and the rubber surface layer and glove fiber. In order to avoid the problem of insufficient use time due to poor wear resistance and the poor adhesion of the PU adhesive layer to the glove core, the coating is easy to fall off from the glove core, which will affect the normal operation of workers. Adverse effects such as use and formation of pollution on the surface of the workpiece

Method used

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  • A kind of PPU glue and the production technology that utilizes this Ppu glue to prepare dipped gloves
  • A kind of PPU glue and the production technology that utilizes this Ppu glue to prepare dipped gloves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] By weight, PPU glue components:

[0084] 40 parts of water-based PU emulsion, 30 parts of water-based polyurea emulsion, 30 parts of water-based PU adhesive, 1 part of black slurry, 2 parts of foaming agent, 1 part of thickener, and 0.5 part of leveling agent.

[0085] The preparation process of water-based PU emulsion is as follows: 100 parts of polyethylene adipate with a molecular weight of 2000, 6 parts of dimethylol propionic acid, 3 parts of 1,4 butanediol, after vacuum dehydration, add 0.3 parts of stannous octoate After stirring evenly, add 25 parts of toluene diisocyanate, heat to 80°C under stirring, and keep it warm for 1-2 hours, then add 50 parts of acetone, continue the reaction for 2-4 hours, and analyze the NCO% content by di-n-butylamine back titration method to reach After the theoretical value, cool down to 50-60°C, add 4.6 parts of triethylamine for neutralization for 15 minutes, then add 205 parts of deionized water while stirring, add 1.2 parts of ...

Embodiment 2

[0096] By weight, PPU glue components:

[0097] 60 parts of water-based PU emulsion, 20 parts of water-based polyurea emulsion, 20 parts of water-based PU adhesive, 1 part of white pulp, 2 parts of foaming agent, 1 part of thickener, and 0.5 parts of leveling agent.

[0098] The preparation process of water-based PU emulsion is as follows: 100 parts of polyethylene adipate with a molecular weight of 2000, 6 parts of dimethylol propionic acid, 3 parts of 1,4 butanediol, after vacuum dehydration, add 0.3 parts of stannous octoate After stirring evenly, add 25 parts of toluene diisocyanate, heat to 80°C under stirring, and keep it warm for 1-2 hours, then add 50 parts of acetone, continue the reaction for 2-4 hours, and analyze the NCO% content by di-n-butylamine back titration method to reach After the theoretical value, cool down to 50-60°C, add 4.6 parts of triethylamine for neutralization for 15 minutes, then add 205 parts of deionized water while stirring, add 1.2 parts of e...

Embodiment 3

[0110] By weight, PPU glue components:

[0111] 80 parts of water-based PU emulsion, 10 parts of water-based polyurea emulsion, 10 parts of water-based PU adhesive, 1 part of black pulp, 2 parts of foaming agent, 1 part of thickener, and 0.5 parts of leveling agent.

[0112] The preparation process of water-based PU emulsion is as follows: 110 parts of polytetrahydrofuran ether glycol with a molecular weight of 2000, 6 parts of dimethylol propionic acid, 3 parts of 1,4 butanediol, after vacuum dehydration, add 0.3 parts of stannous octoate and stir evenly , add 25 parts of hexamethylene diisocyanate, heat to 90°C under stirring and keep it warm for 1 to 2 hours, then add 50 parts of acetone, continue to react for 2 to 4 hours, and analyze the NCO% content by di-n-butylamine back titration method to reach After the theoretical value, cool down to 50-60°C, add 4.6 parts of triethylamine for neutralization for 15 minutes, then add 220 parts of deionized water while stirring, add ...

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PUM

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Abstract

The invention discloses PPU gum and a production technology for preparing a gum dipping glove by using the PPU gum. The PPU gum is mainly prepared by blending the following components together in parts by mass: 40-99 pars of water-borne PU emulsion, 0-30 parts of water-borne polyurea emulsion and 1-30 parts of a water-borne PU binder. The water-borne PU emulsion, the water-borne polyurea emulsionand the water-borne PU binder are respectively prepared in advance. In the PPU gum, according to the need, the water-borne PU emulsion, the water-borne polyurea emulsion and the water-borne PU binderare mutually matched, and the water-borne PU emulsion is used as a basis. On the basis, the water-borne polyurea emulsion can be used as reinforced particles for addition. A suitable amount of the water-borne PU binder is added, so gum dipping emulsion has strength, viscidity and flexibility, a gum layer of a gum dipping product is soft and bonding with base layer fibers of the product is firm. Through matching of several components, the large strength is ensured, and good adhesion stress is ensured. One original polymer component cannot achieve the effects of wide molecular weight distribution, and consideration of the strength, abrasive resistance, softness and hardness, and viscidity.

Description

technical field [0001] The invention relates to a preparation of PPU glue and a production process of using the PPU glue to prepare dipped gloves. Background technique [0002] The traditional polyurethane dipped gloves are oily polyurethane dipped gloves, but because the glue contains toxic DMF solvent and is not environmentally friendly, it is gradually replaced by water-based coated gloves. Most of the existing water-based coatings for dipping gloves use water-based polyurethane PU emulsion, nitrile emulsion or natural latex as the raw material for dipping, but the residues of butadiene and acrylonitrile monomers in the nitrile emulsion have a great impact on the human body. The harmful effects of natural latex, water-soluble protein residues in natural latex can easily cause allergies to users, and the vulcanization process is inevitable in the production of nitrile emulsion and natural latex gloves, and the nitrosamines produced in the vulcanization process will remain ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08L75/02B29C41/20A41D19/015
CPCA41D19/0055B29C41/20C08L75/04C08L2205/02C08L2205/025C08L2205/03C08L75/02
Inventor 陈峰张晖
Owner ZHANGJIAGANG SIQI SCI & TECH LTD
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