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Emulsion type anti-adhesive slip agent for powder-free PVC glove coating and preparation method thereof

An emulsion type, slip agent technology, applied in the direction of coating, can solve the problems of affecting the quality of gloves, easy precipitation, sticking back, etc., to achieve the effect of industrial utilization value, simple production method and improved economic benefits

Active Publication Date: 2017-05-17
LUOYANG SHENGJIA CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These inorganic hardeners are usually light calcium carbonate, silicon powder, aluminum silicate powder and titanium dioxide, etc., because these inorganic powder hardeners themselves have a larger density, when the coating is highly diluted (paint: water = 1:10~15 dilution) It is very easy to precipitate when diluted and applied, which will seriously affect the quality of gloves, causing a series of problems such as twisting, sticking back, surface pollution, etc.
Waxes or silicone oils are often used as slip agents in glove coatings, but these slip agents often cause serious defects such as surface shrinkage cavities and increased surface tension of diluents
[0004] In the existing technology, the patent CN 103013321 A uses silicon dioxide as a hard agent, because the density of silicon dioxide is high, which will inevitably lead to a large amount of precipitation
Patent CN 104419313 A does not use inorganic hard agents, but only uses wax slurry as a slip agent, which will lead to increased stickiness and defective rate of gloves

Method used

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  • Emulsion type anti-adhesive slip agent for powder-free PVC glove coating and preparation method thereof
  • Emulsion type anti-adhesive slip agent for powder-free PVC glove coating and preparation method thereof
  • Emulsion type anti-adhesive slip agent for powder-free PVC glove coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0047] A. Preparation of pre-emulsion

[0048] Take 5-40 parts of the synthesized water-based silicon-containing polyurethane, add 20-40 parts of deionized water and 1-5 parts of emulsifier, fully stir for 20-30 minutes, and then add 10-60 parts of methacrylates in turn Monomer, 5-20 parts of acrylate monomer, 0.1-3 parts of diacrylate-type crosslinking agent monomer and 0.5-5 parts of hydrophilic monomer are fully stirred and emulsified to prepare a pre-emulsion.

[0049] B. Seed Preparation of Compound Emulsion

[0050] Add 10-20 parts of water-based silicon-containing polyurethane, add 40-60 parts of deionized water and 1-5 parts of emulsifier, add 10-20 parts of pre-emulsion after stirring, and add 1-2 parts of 10% ammonium persulfate , heated to 60 ~ 65 ℃ for 30 ~ 40 minutes, began to drop the remaining pre-emulsion, and began to drop the remaining 8 ~ 10 parts of 10% ammonium persulfate, dripped within 3 ~ 4 hours, and then heated up to 85 The temperature is maintained...

Embodiment 1

[0076] (1) Synthesis of water-based silicon-containing polyurethane

[0077] 33.5 parts of Pol-2356 (hydroxyl value 54~56mg KOH / g, produced by Qingdao Yutian Chemical Industry), 22.4 parts of polysiloxane diol H-Si 2311 (hydroxyl value 40~50mg KOH / g, Degussa Corporation), 1 part of trimethylolpropane (Swedish Pastor Company), 4 parts of dimethylolpropionic acid hydrophilic agent (Swedish Pastor Company), heated to 70 ℃ under full stirring, Add 20 parts of isophorone diisocyanate, heat up to 75~85 ℃ and react for 3~5 hours, then cool down to 50 ℃, add 2 parts of salt-forming agent, form salt for 10 minutes, add 120 parts of deionized water, then immediately Add 3 parts of chain extender, and discharge after 60 minutes of reaction to obtain the desired water-based silicon-containing polyurethane.

[0078] (2) Synthesis of polyacrylate / silicon-containing polyurethane composite emulsion

[0079] A. Preparation of pre-emulsion

[0080] Take 10 parts of the synthesized water-base...

Embodiment 2

[0084] The procedure of Example 1 was repeated, except that 22.4 parts of polysiloxane in Example 1 were replaced with 22.4 parts of POL-2345 (hydroxyl value 54-56 mg KOH / g, produced by Qingdao Yutian Chemical Co., Ltd.) in the synthesis of water-based silicon-containing polyurethane. Alkanediol, others are the same as Example 1.

[0085]The polyacrylate / silicon-containing polyurethane composite emulsion prepared by the method of the present invention is prepared according to the following powder-free PVC glove coating formula: 40 parts of water-based aliphatic polyester polyurethane BAYHYDROL110 (35% solid content, Bayer company), polyacrylate / 10 parts of silicon-containing polyurethane composite emulsion, 2 parts of leveling agent 1120 (Momentive High-tech Materials Group), 1 part of defoamer foamstar 330 (Koning Chemical Company), 4.5 parts of thickener ASE-600, 0.5 parts of ammonia water, to 42 parts of ionized water.

[0086] The preparation method of the control sampl...

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Abstract

The invention relates to an emulsion type antisticking slipping agent for powderless PVC glove coating. The emulsion type antisticking slipping agent is a polyacrylate / silicon-containing polyurethane composite emulsion. The composite emulsion consists of 30-80% of polyacrylate and 20-70% of silicon-containing polyurethane. The composite emulsion can be added into the formula of powderless PVC glove coating to effectively substitute wax and organic silicone oil to play a slip increasing role, also can completely or partly replace an inorganic rigid agent to endow gloves with good molding and antisticking properties, has the advantages of no generation of precipitate, no after-tack of gloves, no edge torsion and more excellent slip grade, and has greater practicability.

Description

technical field [0001] The present invention relates to an emulsion type anti-sticking and slipping agent and its preparation method, in particular to a polyacrylate / silicon-containing polyurethane composite emulsion anti-sticking and slipping agent and its preparation method, especially a powder-free PVC glove The invention relates to an emulsion type anti-adhesive and slip agent for coating to replace slip agents such as inorganic powder hard agents and waxes, and a preparation method thereof. Background technique [0002] PVC gloves are made of PVC paste resin, plasticizer, viscosity reducer and fatty acid salt stabilizer through plasticization. They have the characteristics of chemical corrosion resistance, flame retardancy, high strength and easy processing. However, due to the addition of a large amount of plasticizers, PVC gloves without surface treatment are not easy to release and have poor wearability. The traditional treatment method is to coat dry lubricating ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/12C08F283/00C08G18/66C08G18/61C08G18/42
Inventor 李延科
Owner LUOYANG SHENGJIA CHEM CO LTD
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