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High dilution ratio aqueous coating agent for PVC powder-free gloves and preparation method thereof

A high dilution ratio, water-based coating technology, used in gloves, clothing, applications, etc., can solve the problems of technical difficulty of coating agents, uneven coating, unstable working fluid, etc., to protect product quality, meet production requirements, and improve The effect of production requirements

Inactive Publication Date: 2012-10-17
BEIJING COMENS YANSHAN TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventors have found that the existing coating agents have at least the following problems: if the coating agent based on the above anti-adhesive principle wants to increase the proportion, the filler content in the coating agent must be increased. After the filler content increases, the viscosity of the system It will rise accordingly, which will make it technically difficult to prepare high-dilution-ratio coating agents. Therefore, the dilution ratio of coating agents currently used by glove manufacturers is generally between 1:8 and 1:18, and no higher ratios have been seen. Finishing products
In addition, the prepared working fluid has a viscosity very similar to that of water. Over time, the fillers contained in the working fluid will separate, making the working fluid unstable, and finally causing the coating on the gloves to be unstable. Uniform, affecting glove quality

Method used

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  • High dilution ratio aqueous coating agent for PVC powder-free gloves and preparation method thereof
  • High dilution ratio aqueous coating agent for PVC powder-free gloves and preparation method thereof
  • High dilution ratio aqueous coating agent for PVC powder-free gloves and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032]The finishing agent for PVC gloves of the present embodiment comprises the following components by weight percentage: water-based polyurethane (A resin) 40%~80%, polyacrylic acid emulsion (B resin) 10%~40%, defoamer 0.1% %~1.5%, wetting and leveling agent 0.05%~5%, anti-sticking and slipping agent 2%~8%, water retaining agent 0.1%~2%;

[0033] Wherein, the water-based polyurethane is A resin, the particle size is preferably 0.05-0.15 μm, and the molecular weight is preferably 1-80,000;

[0034] The water-based polyurethane is specifically prepared by forming a prepolymer from polyglycol, cross-linking agent and polyisocyanate under the action of an ionizing agent, then adding a neutralizing agent to synthesize a salt, and finally adding deionized water to emulsify.

[0035] The polyacrylic acid emulsion is B resin, the glass transition temperature is preferably 80-200°C, the particle size is preferably 0.2-2 μm, and the molecular weight is preferably 5-100,000;

[0036]...

Embodiment 2

[0071] The finishing agent in this embodiment is made by mixing water-based polyurethane as resin A, polyacrylic acid emulsion as resin B, defoamer, wetting and leveling agent, anti-adhesive slip agent and water retention agent. First, resin A and resin B are prepared ,details as follows:

[0072] (1) Preparation of waterborne polyurethane (A resin):

[0073] 100g butanone, 110g CMA-1524 (polyester diol, hydroxyl value 71-79mg KOH / g, Yantai Huada Chemical Industry Company), 100g GEP-560G (polyether diol, hydroxyl value 53-59mg KOH / g, Shanghai Gaoqiao Petrochemical), 2g trimethylolpropane and 7.5g dimethylol butyric acid were added to the three-necked flask successively, and the temperature was raised to 40-50°C under constant stirring; then 34.5g hexamethylene diisocyanate was added , heat up to 70-80°C, and keep warm at this temperature for 2-3 hours; then, cool down to 30-50°C, and then add 8.1g of triethylamine to form a salt; after 20 minutes, add 137.9g ​​of deionized w...

Embodiment 3

[0079] The finishing agent in this embodiment is made by mixing water-based polyurethane as resin A, polyacrylic acid emulsion as resin B, defoamer, wetting and leveling agent, anti-sticking and slipping agent, and water retention agent. First, resin A and resin B are prepared. ,details as follows:

[0080] (1) Preparation of A resin waterborne polyurethane:

[0081] 120g butanone, 140g pol-256 (polyester diol, hydroxyl value 53-56mg KOH / g, Qingdao Yutian Chemical Industry), 75g TDiol-1000 (polyether diol, hydroxyl value 109-115mg KOH / g, Tianjin Petrochemical), 2.5g of trimethylolpropane and 8g of dimethylol propionic acid were successively added into the three-necked flask, and the temperature was raised to 40-50°C under uniform stirring; then 42g of toluene diisocyanate was added, and the temperature was raised to 70-80°C, and Keep warm at this temperature for 2-3 hours; then, cool down to 30-50°C, then add 7.5g of triethylamine to form a salt; after 20 minutes, add 113g of...

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Abstract

The invention discloses a high dilution ratio aqueous coating agent for PVC powder-free gloves; the coating agent is prepared by mixing the following materials by mass percentage: 40-80% of waterborne polyurethane, 10-40% of ylate emulsion, 0.1-1.5% of antifoaming agent, 0.05-5% of wetting flatting agent, 2-8% of anti-blocking slipping agent and 0.1-2% of water retention agent. Filling is not used in the coating agent, and high dilution ratio between 1:30-1:40 can be reached under the condition of moderate system viscosity, thus being more economical to use; the extinction effect is realized by applying compatibility limitation instead of filling so that when the coating agent is used to prepare the PVC powder-free gloves, diluted coating agent working solution can be kept stable for a long time without separation, thus being applicable to production.

Description

technical field [0001] The invention relates to a preparation technology of a water-based finishing agent, in particular to a water-based finishing agent with a high dilution ratio for PVC powder-free gloves, a preparation method and application thereof. Background technique [0002] PVC gloves are made by impregnating the glove mold with PVC latex and gelling. Without treatment, the PVC material used to make gloves is self-adhesive, so the gloves will be difficult to remove from the mold during production, and the inner surface of the gloves will stick after packing. , it is inconvenient to wear during use. Nowadays, the surface of PVC gloves is often treated with a coating agent to form a very thin coating on the inner surface of the gloves to prevent the inner surface of PVC gloves from sticking. The gloves prepared in this way are called powder-free gloves. [0003] The finishing agent used to produce powder-free gloves is mainly composed of resin and anti-stick matting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C08J7/04A41D19/00C09D133/02
Inventor 贾海亭沈峰邓煜东
Owner BEIJING COMENS YANSHAN TECH
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