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Organic silicon modified bio-based waterborne polyurethane resin composition and preparation method thereof

A technology of polyurethane resin and water-based polyurethane, which is applied in the field of organosilicon-modified bio-based water-based polyurethane resin composition and its preparation, can solve the problems of folding resistance, wear resistance, heat resistance, mechanical properties, storage performance, biodegradability and Constant temperature and humidity performance and other problems are not high enough, performance defects, limiting the application of water-based polyurethane materials, etc.

Pending Publication Date: 2021-01-15
SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, bio-based waterborne polyurethane resins still have insufficient performance such as folding resistance, wear resistance, heat resistance, mechanical properties, storage performance, biodegradability and constant temperature and humidity performance.
In addition, because waterborne polyurethane uses more hydrophilic groups as emulsifiers in the synthesis process, and there is often a shortcoming of phase separation between polyols and isocyanates commonly used in the synthesis of waterborne polyurethane, the prepared waterborne polyurethane resin has performance defects. , leading to poor wear resistance, solvent resistance and water resistance of water-based polyurethane materials compared with solvent-based polyurethane or other polymer materials, these performance shortcomings seriously limit the application of water-based polyurethane materials

Method used

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  • Organic silicon modified bio-based waterborne polyurethane resin composition and preparation method thereof
  • Organic silicon modified bio-based waterborne polyurethane resin composition and preparation method thereof
  • Organic silicon modified bio-based waterborne polyurethane resin composition and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0065] The composition of organosilicon-modified bio-based water-based polyurethane resin composition is shown in the table below:

[0066] Table 1

[0067] raw material name Weight (unit: gram) Korean SK bio-based polyol H-2000 (number average molecular weight 2000) 140 Polytetrahydrofuran ether glycol (number average molecular weight 2000) 140 DMPA 5 Dicyclohexylmethane diisocyanate 100 1,6-diisocyanate 20 Catalyst BICAT 8118 0.2 acetone 470 Methylpropanediol 6 Polypropylene oxide / ethylene oxide ether modified silicone oil diol (number average molecular weight 6000) 30 ethanolamine 3 Triethylamine 3.76 Sodium ethylenediaminoethanesulfonate 50% aqueous solution (A-95) 18 Deionized water 686 Ethylenediamine 5.23

[0068] The preparation steps of the organosilicon modified bio-based waterborne polyurethane resin of the present embodiment are as follows:

[0069] 1) Put 140g of Ko...

Embodiment 2

[0073] The composition of organosilicon-modified bio-based water-based polyurethane resin composition is shown in the table below:

[0074] Table 2

[0075]

[0076]

[0077] The preparation steps of the organosilicon modified bio-based waterborne polyurethane resin of the present embodiment are as follows:

[0078] 1) Put 280g of Korean SK bio-based polyols, 5g of DMPA, and 0.1g of catalyst BICAT 8118 into the reactor, and stir at 50°C for 20 minutes until evenly stirred;

[0079] 2) Put 100g of dicyclohexylmethane diisocyanate and 20g of 1,6-hexamethylene diisocyanate into the reaction kettle, strictly control the reaction temperature between 85 and 90°C, and after 2.5 hours of normal pressure reaction, take samples to measure the NCO content. When the NCO content is lower than After 6.72%, drop the temperature to 62°C and put in 150 grams of acetone, stir evenly, add 6g of methyl propylene glycol, 3g of ethanolamine, 30g of polypropylene oxide / ethylene oxide ether mo...

Embodiment 3

[0082] The composition of organosilicon-modified bio-based water-based polyurethane resin composition is shown in the table below:

[0083] table 3

[0084]

[0085]

[0086] The preparation steps of the organosilicon modified bio-based waterborne polyurethane resin of the present embodiment are as follows:

[0087] 1) Put 80g of polycarbonate diol, 190g of Korean SK bio-based polyol, 40g of polypropylene oxide / ethylene oxide ether modified silicone oil diol, and 0.1g of catalyst BICAT 8118 into the reactor, and stir at 50°C for 20 minutes , to stir evenly;

[0088] 2) Put 100g of isophorone diisocyanate and 20g of 1,6-hexamethylene diisocyanate into the reactor, strictly control the reaction temperature between 85 and 90°C, and react at normal pressure for 2.5 hours, then take samples to measure the NCO content, when the NCO content is low After 8.11%, cool down to 62°C and put in 150g of acetone, stir evenly, add 5g of DMPA, 17g of 1,6-hexanediol, continue to react a...

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Abstract

The invention relates to the technical field of waterborne synthetic leather, in particular to an organic silicon modified bio-based waterborne polyurethane resin composition and a preparation methodthereof. The composition comprises polymer polyol, a chain extender, micromolecular diamines, polyisocyanates, a diluent and water, wherein the polymer polyol comprises (a) an organosilicon polyol and(b) at least one selected from a polyether polyol, a polyester polyol and a bio-based polyol with a number average molecular weight of 500-8000. By introducing a specific organic silicon raw materialinto the bio-based waterborne polyurethane, the strength and the flexibility of the resin can be improved, and the folding resistance, the wear resistance, the heat resistance, the mechanical property, the biodegradability, the jungle aging resistance and the like of the waterborne polyurethane resin can be remarkably improved.

Description

technical field [0001] The invention relates to the technical field of water-based synthetic leather, in particular to a silicone-modified bio-based water-based polyurethane resin composition and a preparation method thereof. Background technique [0002] With the development of social economy, while consumers are pursuing product quality, their awareness of environmental protection is also increasing. In the current water-based synthetic leather industry, the water-based polyurethane resins generally used are coal and petroleum-based raw materials, which will cause serious environmental pollution. Coal and oil are non-renewable resources, and their non-renewable characteristics have caused their prices to rise continuously, leading to rising prices of raw materials for downstream products. Moreover, fossil resources may also be exhausted. Therefore, from the perspective of sustainable development of polyurethane, it is necessary to find new materials and new processes that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/40C08G18/34C08G18/61C08G18/32C08G18/38C08G18/44C08G18/65C08G18/12D06N3/14
CPCC08G18/6692C08G18/6685C08G18/6674C08G18/6541C08G18/6529C08G18/6511C08G18/4854C08G18/40C08G18/348C08G18/61C08G18/32C08G18/38C08G18/44C08G18/6659C08G18/664C08G18/6651C08G18/12D06N3/146C08G18/3228C08G18/3855C08G18/3231
Inventor 赵波峰蒋红梅阮华伟曹琛唐劲松
Owner SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD
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