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Super-elastic wear-resisting waterborne polyurethane resin and composition and application of super-elastic wear-resisting waterborne polyurethane resin and composition

A water-based polyurethane and composition technology, which is applied in the directions of abrasion-resistant fibers, textiles and papermaking, and fiber processing. Good results

Inactive Publication Date: 2015-04-08
ANHUI LINGDA CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, domestic patents have also published several articles about the production method of water-based polyurethane coated labor protection gloves, such as patent publication number CN102113717A, "A kind of environment-friendly water-based polyurethane coated gloves and its preparation method", but they all generally mention the need for water-based polyurethane Resin blending, without detailed analysis and introduction of performance indicators of waterborne polyurethane

Method used

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  • Super-elastic wear-resisting waterborne polyurethane resin and composition and application of super-elastic wear-resisting waterborne polyurethane resin and composition
  • Super-elastic wear-resisting waterborne polyurethane resin and composition and application of super-elastic wear-resisting waterborne polyurethane resin and composition
  • Super-elastic wear-resisting waterborne polyurethane resin and composition and application of super-elastic wear-resisting waterborne polyurethane resin and composition

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A kind of super-elastic wear-resistant water-based polyurethane resin, composition and preparation method applied to knitted glove coating:

[0043] (1) Preparation of polyester diol: under the protection of inert gas, put 500kg of succinic acid, 300kg of glutaric acid, 423kg of ethylene glycol and 0.2kg of antioxidant into the reaction kettle and add it to 150~170℃ for reaction 1~2h, with the evaporation of water, then heat up to 190~210°C, when the measured acid value is lower than 30mgKOH / g, add 0.8kg of catalyst, start vacuuming in stages, and gradually increase the vacuum degree. After reaching -0.09MPa, keep warm for 6-8 hours during this process, the acid value drops to 0.4mgKOH / g and the measured hydroxyl value is 37-38mgKOH / g (Mn=3000), stop the reaction, cool down and discharge the material, and obtain poly Ester diol is light red viscous colloid.

[0044] (2) Preparation of super-elastic and wear-resistant water-based polyurethane resin: in kg by weight, und...

Embodiment 2

[0049] A kind of super-elastic wear-resistant water-based polyurethane resin, composition and preparation method applied to knitted glove coating:

[0050] (1) Preparation of polyester diol: under the protection of inert gas, 647kg adipic acid, 200kg1, 4-butanediol, 300kg1, 6-hexanediol and 0.2kg antioxidant are dropped into the reaction kettle to add, and the liter React at 150-170°C for 1-2 hours, then heat up to 190-210°C as the water evaporates, and when the measured acid value is lower than 30mgKOH / g, add 0.8kg of catalyst, start vacuuming in stages, and gradually increase the vacuum degree , generally requires the vacuum degree to reach -0.09MPa. During this process, keep warm for 6-8 hours, after the acid value drops below 0.4mgKOH / g and the measured hydroxyl value is 28.5-29mgKOH / g (Mn=4000), stop the reaction and cool down Discharging, the polyester diol obtained at normal temperature is light red viscous colloid.

[0051] (2) Preparation of super-elastic and wear-re...

Embodiment 3

[0057] A kind of super-elastic wear-resistant water-based polyurethane resin, composition and preparation method applied to knitted glove coating:

[0058] (1) Preparation of polyester diol: under the protection of inert gas, put metered 300kg adipic acid, 300kg succinic acid, 268.7kg1, 3-propanediol, 1391,6-hexanediol and 0.2kg antioxidant into the reactor Add it in, raise it to 150-170°C and react for 1-2 hours, then heat up to 190-210°C as the water evaporates, and when the measured acid value is lower than 30mgKOH / g, add 0.8kg of catalyst and start vacuuming in stages. Gradually increase the vacuum degree, and generally require the vacuum degree to reach -0.09MPa. During this process, keep warm for 6-8 hours, after the acid value drops below 0.4mgKOH / g and the measured hydroxyl value is 22-23mgKOH / g (Mn=5000) , stop the reaction and cool down to discharge, and obtain the polyester diol as light red viscous colloid at normal temperature.

[0059] (2) Preparation of super-e...

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Abstract

The invention discloses super-elastic wear-resisting waterborne polyurethane resin which is prepared by polymerizing polyester glycol and polyisocyanates. The invention further discloses a preparation method of the resin. By adopting the super-elastic wear-resisting waterborne polyurethane resin disclosed by the invention, slurry can be prepared to coat the surfaces of knitted gloves, so that the problems that in the prior art, knitted gloves made by using a conventional method are hard in hand feeling, poor in resilience, low in wearing resistance, and the like.

Description

technical field [0001] The present invention relates to a new resin material, composition and application thereof, in particular to a super-elastic and wear-resistant water-based polyurethane resin synthesized from polyester diol and polyisocyanate, composition, preparation method and its application to knitted gloves coating. Background technique [0002] At present, the coating of knitted labor protection gloves mainly includes solvent-based and nitrile latex, and there is also a small amount of nitrile latex-waterborne polyurethane hybrid coating. Solvent-based coatings contain a large amount of highly toxic solvent dimethylformamide DMF. No matter what measures are taken in the production process, it is an established fact that DMF remains in the finished gloves, but the amount of residue is a problem. Wearing the gloves for a long time is harmful Harm to human health can cause damage to the respiratory system and lungs in severe cases, and it does not meet the requirem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/10C08G18/75C08G18/32C08L75/06D06M15/572
CPCC08G18/10C08G18/0823C08G18/12C08G18/4238C08G18/6659D06M15/572D06M2200/35
Inventor 蒋国忠
Owner ANHUI LINGDA CHEM TECH
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