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Organosilicon-modified polyurethane finishing agent and production method thereof

A polyurethane finishing agent and silicone technology, which is applied in the field of textile printing and dyeing, can solve the problems of poor hand feeling of cloth samples, and achieve the effects of soft hand feeling, improved wet rubbing fastness and improved hand feeling.

Inactive Publication Date: 2017-11-24
GUANGDONG ZHAN FENG FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is that the cationic groups in the synthetic samples can form electrostatic bonds with water-soluble anionic groups such as sulfonic acid groups or carboxylic acid groups in the molecular structure of the dye, and seal the water-soluble groups so that the dyes are deposited on the fiber; secondly, the water-based After the polyurethane is unblocked, the extremely active isocyanate group (-NCO) is released again, which can react with the active hydrogen on the dye and fiber to improve the binding force between the dye and the fabric, but the fabric feels worse

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] It is a silicone modified polyurethane finishing agent, including 138.54 grams of PPG2000, 3.73 grams of trimethylolpropane, 13.13 grams of 2,2-dimethylolpropionic acid DMPA, 0.1 grams of dibutyltin dilaurate DBTDL, 74.32 grams of IPDI, 7.72 grams of triethylamine, 65 grams of double-ended aminopropyl silicone oil DNN066-01 and 158 grams of deionized water.

[0020] In this embodiment, the production method of silicone modified polyurethane finishing agent is as follows:

[0021] The prepolymerization reaction of step one polyurethane:

[0022] Weigh 138.54 grams of PPG2000, add it to a dry four-necked flask with a stirring device and a thermometer, raise the temperature to 120°C, dehydrate at 120°C for 2.5 hours under a vacuum of 0.1MPA, and then cool down to 55°C , add 3.73 grams of trimethylolpropane, 0.1 grams of dibutyltin dilaurate DBTDL and 13.13 grams of 2,2-dimethylolpropionic acid DMPA, then add 74.32 grams of IPDI dropwise, and the dropping time is 0.3 to 0....

Embodiment 2

[0032] It is a silicone modified polyurethane finishing agent, including 147 grams of PPG2000, 14 grams of trimethylolpropane, 24 grams of 2,2-dimethylolpropionic acid DMPA, 0.3 grams of dilauric acid di Butyltin DBTDL, 99 grams of IPDI, 5 grams of triethylamine, 122 grams of double-ended aminopropyl silicone oil DNN066-01 and 588 grams of deionized water, which are parts by weight.

[0033] In this embodiment, the production method of silicone modified polyurethane finishing agent is as follows:

[0034] The prepolymerization reaction of step one polyurethane:

[0035] Weigh 147 grams of PPG2000 and add it to a dry four-necked flask with a stirring device and a thermometer, raise the temperature to 122°C, dehydrate at 122°C for 2 hours under a vacuum of 0.1MPA, and then cool down to 57°C. Add 14 grams of trimethylolpropane, 0.3 grams of dibutyltin dilaurate DBTDL and 24 grams of 2,2-dimethylolpropionic acid DMPA, then add 99 grams of IPDI dropwise, and the dropping time is 0...

Embodiment 3

[0048] It is a silicone modified polyurethane finishing agent, including 208 grams of PPG2000, 7 grams of trimethylolpropane, 14 grams of 2,2-dimethylol propionate DMPA, 0.3 grams of dibutyltin dilaurate DBTDL, 208 grams of IPDI, 7 grams of triethylamine, 70 grams of double-ended aminopropyl silicone oil DNN066-01 and 485 grams of deionized water, which are parts by weight.

[0049] In this embodiment, the production method of silicone modified polyurethane finishing agent is as follows:

[0050] The prepolymerization reaction of step one polyurethane:

[0051]Weigh 208 grams of PPG2000 and add it to a dry four-necked flask with a stirring device and a thermometer, raise the temperature to 125°C, dehydrate at 125°C for 1.5 hours under a vacuum of 0.1MPA, and then cool down to 60°C. Add 7 grams of trimethylolpropane, 0.3 grams of dibutyltin dilaurate DBTDL and 14 grams of 2,2-dimethylolpropionic acid DMPA, then add 208 grams of IPDI dropwise, and the dropping time is 0.3-0.7 h...

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Abstract

The invention relates to an organosilicon-modified polyurethane finishing agent and a production method thereof. The organosilicon-modified polyurethane finishing agent is characterized by being prepared from the following raw materials in parts by weight: 30-100 parts of PPG2000, 1-3 parts of trimethylolpropane, 3-5 parts of 2,2-dimethylolpropionic acid DMPA, 0.05-0.1 part of dibutyltin dilaurate DBTDL, 20-104 parts of IPDI, 1-3 parts of trimethylamine, 15-25 parts of double-end aminopropyl silicone oil DNN066-01 and 120-160 parts of deionized water. The organosilicon-modified polyurethane finishing agent has the advantages that the hand feeling of a cloth specimen is obviously improved in comparison with that of original cloth after the cloth specimen is finished by using the finishing agent; the organosilicon-modified polyurethane finishing agent can react with a dye, a fiber and reactive hydrogen; the binding force of the dye and the fabric can be improved; the wet rubbing fastness is improved; and the cloth specimen is soft in hand feeling, smooth and fluffy.

Description

technical field [0001] The invention relates to a silicone-modified polyurethane finishing agent and a production method thereof, belonging to the field of textile printing and dyeing. Background technique [0002] The wet rubbing fastness of the finished cotton knitted fabric can be improved by one level compared with the unfinished cotton knitted fabric. The reason is that the cationic groups in the synthetic samples can form electrostatic bonds with water-soluble anionic groups such as sulfonic acid groups or carboxylic acid groups in the molecular structure of the dye, and seal the water-soluble groups so that the dyes are deposited on the fiber; secondly, the water-based After the polyurethane is unblocked, the extremely active isocyanate group (-NCO) is released again, which can react with the active hydrogen on the dye and fiber to improve the binding force between the dye and the fabric, but the fabric feels worse. Contents of the invention [0003] The purpose of...

Claims

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Application Information

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IPC IPC(8): D06M15/568D06P1/44D06P1/52C08G18/08C08G18/12C08G18/32C08G18/34C08G18/40C08G18/48C08G18/66C08G18/61
CPCD06M15/568C08G18/0823C08G18/12C08G18/3206C08G18/348C08G18/4009C08G18/48C08G18/6692D06M2200/50D06P1/445D06P1/5285C08G18/61
Inventor 高银芬
Owner GUANGDONG ZHAN FENG FINE CHEM CO LTD
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