Process for producing knitted and dipped PU (polyurethane) gloves by using dimethyl sulfoxide

A technology of dimethyl sulfoxide and production process, which is applied in textiles and papermaking, fiber treatment, protective clothing, etc., and can solve problems such as unfavorable equipment use

Inactive Publication Date: 2010-10-06
沙晓林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the solidification point of the solution prepared by dimethyl sulfoxide is 18-19°C, and paste will occur below this temperature, which is not conducive to the use of current equipment

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0018] The present invention is a kind of knitting impregnated PU glove production process, comprising:

[0019] Dip the knitted gloves into a solution, wherein the solvent is prepared in proportion by polyurethane resin and DMSO (dimethyl sulfoxide); and

[0020] The dipped knitted gloves are treated in a water bath.

[0021] Specifically, in the solution, the polyurethane resin and DMSO (dimethyl sulfoxide) are preferably prepared in a ratio of 1:1.4 to 1:1.9, and the viscosity of the prepared solution is preferably 500 to 600 perk. Controlling the appropriate viscosity makes it easier for the gloves to be removed from the solvent during the production process, improves the adsorption of the solvent, and reduces the workload of subsequent recovery.

[0022] Specifically, the polyurethane resin is synthesized from dimethyl sulfoxide. The polyurethane resin obtained by synthesis cannot be directly applied in the production process of the knitted impregnated PU gloves, and mu...

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PUM

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Abstract

The invention provides a process for producing knitted and dipped PU (polyurethane) gloves. The process comprises the following steps of: dipping knitted gloves into a solvent, wherein the solvent is prepared from polyurethane resin and DMSO (dimethyl sulfoxide) according to the proportion of 1:1.4-1:1.9, the solvent temperature is maintained to be higher than 20 DEG C, and the polyurethane resin is synthesized by the participation of dimethyl sulfoxide; carrying out water bath treatment on the dipped knitted gloves; drying the knitted gloves subjected to the water bath treatment, wherein the drying time is for 50-60 min, and the drying temperature is 100-110 DEG C; and recycling the DMSO in the solvent from the water in the water bath with a vacuum depressurization method. The invention also provides a solvent for the process for producing the knitted and dipped PU gloves, wherein the solvent is prepared from the polyurethane resin and the DMSO according to the proportion. The invention also provides gloves produced by using the process for producing knitted and dipped PU gloves.

Description

technical field [0001] The invention relates to a production process of knitted impregnated PU gloves, in particular to a process for producing knitted impregnated PU gloves using dimethyl sulfoxide (DMSO) instead of dimethylformamide (DMF) as a solvent. Background technique [0002] The safety protective gloves impregnated with PU resin based on knitted liner gloves have become the most popular safety gloves in the international market because of their thinner rubber layer, comfortable wearing, good oil resistance, wear resistance, and low cost. An important product, the production and sales volume has been rising continuously in recent years. However, the production of such PU impregnated gloves requires the use of dimethylformamide (DMF) as a solvent, and DMF has high toxicity. If there is DMF residue in the gloves, it will irritate the skin after wearing; at the same time, due to the use of DMF in production As a solvent, it will affect the health protection of employee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A41D19/015D06M13/268D06M13/402
Inventor 沙晓林
Owner 沙晓林
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