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Synthesis method of polyurethane-type macromonomer

A polyurethane-based, synthetic method of technology, applied in the field of fine chemicals, can solve problems such as poor adhesion, poor gloss, unstable storage, etc., and achieve the effect of fewer steps, simple operation, and less investment in equipment

Active Publication Date: 2010-07-14
SUZHOU BONA CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many performance differences between water-based products and traditional oil-based products, such as poor adhesion, unstable storage, poor gloss, etc., which requires some special functional macromonomers to improve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Raw material formula: PEG200 (hydroxyl value=212): 400g, IPDI: 838g, lauryl alcohol: 351g, hydroxyethyl acrylate: 217g, T12: 1.8g, hydroquinone: 5g (Note: PEG200, Lauryl Alcohol, Hydroxyethyl Acrylate have been pre-dehydrated)

[0025] Add 400g PEG200 into a 2000ml four-neck flask, heat up, add IPDI while stirring at 23°C, then raise the temperature to 90-95°C while stirring, add 1gT12 at 90-95°C and keep it warm for 3 hours, measure the NCO content to NCO Qualified, then start to cool down to 40-42°C, add hydroquinone, and stir for 5 minutes; add a mixture of dodecyl alcohol and hydroxyethyl acrylate, and heat up while stirring; add 0.8g T12 at a temperature control of 102°C, and keep warm for 2h; measure NCO content until the NCO can not be detected, then lower the temperature to 52°C, and discharge the material to obtain a polyurethane macromonomer.

Embodiment 2

[0026] Example 2: Raw material formula: PEG1000 (hydroxyl value=987): 600g, IPDI: 270g, stearyl alcohol: 164g, hydroxyethyl acrylate: 70g, T12: 1.6g, hydroquinone: 4g (Note: PEG1000, stearyl alcohol, hydroxyethyl acrylate have been dehydrated pretreatment)

[0027] Add 600g PEG1000 into a 2000ml four-neck flask, heat up, add IPDI while stirring at 45°C, then raise the temperature to 90-100°C while stirring, add 0.8g T12 at 90-100°C and keep it warm for 2.5h, measure NCO When the NCO content is qualified, then start to cool down to 38°C, add hydroquinone, and stir for 5 minutes; add a mixture of stearyl alcohol and hydroxyethyl acrylate, and heat up while stirring; add 0.8g T12 at a temperature control of 106°C, and keep warm for 2h; Then measure the NCO content until the NCO cannot be detected, then cool down to 47° C., and discharge the material to obtain a polyurethane macromonomer.

Embodiment 3

[0028] Embodiment 3: Raw material formula: PEG4000 (hydroxyl value=4250): 1000g, IPDI: 104.5g, cetyl alcohol: 56.5g, hydroxypropyl methacrylate: 34g, T12: 1.4g, polymerization inhibitor: 3.5g ( Note: PEG4000, cetyl alcohol, and hydroxypropyl methacrylate have been pretreated by dehydration)

[0029] Add 1000g PEG4000 into a 2000ml four-neck flask, heat up to 80°C until completely melted, then cool down to below 50°C and add IPDI while stirring, then heat up to 90-100°C while stirring, add 0.6g T12 at 90-100°C After the heat preservation reaction for 3 hours, measure the NCO content until the NCO is qualified, then start to cool down to 55°C, add hydroquinone, and stir for 5 minutes; add the mixture of stearyl alcohol and hydroxyethyl acrylate, and raise the temperature while stirring; control the temperature to 110°C Add 0.8g T12 and keep it warm for 4 hours; then measure the NCO content until NCO cannot be detected, then cool down to 55°C, and discharge the material to obtain...

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PUM

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Abstract

The invention discloses a synthesis method of polyurethane-type macromonomer, comprising the steps of: adding polyether into a reactor, and heating; adding IPDI at the temperature below 55 DEG C, and raising the temperature to 90-100 DEG C; adding T12, and carrying out heat preservation for 2.5-3h; measuring the content of NCO until hydroxyl reaction is fully carried out; lowering the temperature to be lower than 55 DEG C, adding polymerization inhibitor, and stirring for 5-7min; adding fatty alcohol and acrylic esters resin at the temperature below 55 DEG C, raising the temperature to 90-120 DEG C, adding T12 and carrying out heat preservation for 2-4h; measuring the content of NCO until the content can not be measured; and lowering the temperature to be lower than 50 DEG C, discharging, and obtaining the polyurethane-type macromonomer, wherein the mass ratio among the polyether, IPDI, T12, fatty alcohol, acrylic esters resin and polymerization inhibitor is 100:10-210:5-90:3-55:0.1-0.5:0.3-1.5. The synthesis method has the advantages of fewer steps, simple operation, easy implementation and less equipment investment, and is economically feasible.

Description

technical field [0001] The invention relates to fine chemical technology, in particular to a method for synthesizing a polyurethane type macromonomer. Background technique [0002] With the increasing shortage of energy and the aggravation of environmental protection issues, the problem of water-based acrylic resins and additives required by all industries such as textiles, leather, packaging, coatings, inks, etc. is becoming increasingly urgent. However, there are many performance differences between water-based products and traditional oil-based products, such as poor adhesion, unstable storage, poor gloss, etc., which require some special functional macromonomers to improve. [0003] At present, there are many varieties of polyester-type and polyether-type functional monomers on the market, but there are not many varieties of functional monomers based on urethane bonds, but the special properties of urethane are irreplaceable by polyether and polyester. . The purpose of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08G18/48
Inventor 李维格
Owner SUZHOU BONA CHEM TECH