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Preparation method of crosslinkable block-grafted type high-molecular polymer

A high-molecular polymer and branch-type technology, applied in the field of macromolecular chemistry, can solve the problem of weak resistance to external interference of the hydration layer, achieve good cross-linking function and particle binding performance, good water resistance, and enhance dispersion stability. Effect

Active Publication Date: 2017-03-29
HANGZHOU TRANSFAR FINE CHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent claims that the dispersant has the advantages of uniform dispersion of pigment particles and good stability, but because its overall structure is a straight chain, the hydration layer formed by the hydrophilic segment has a weak ability to resist external interference

Method used

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  • Preparation method of crosslinkable block-grafted type high-molecular polymer

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Embodiment 1

[0023] Example 1: The mixture of TMPEG with a molecular weight of 1000 and polyethylene glycol with a molecular weight of 1200 was distilled under reduced pressure for 1 hour at a temperature of 120° C. and a vacuum of 0.09 MPa, then cooled and sealed for use. 10.7 g of glyceryl monostearate was added to a four-necked flask equipped with a stirrer and a thermometer, and the temperature was 120° C., and the vacuum was 0.09 MPa and vacuum distillation was carried out for 1 hour. Cool down to 60°C, add 0.02g of dibutyltin dilaurate, then dropwise add 12g of toluene diisocyanate, stir and raise the temperature to 80-85°C, and react for 2 hours. Then add 33.53g of TMPEG with a molecular weight of 1000 and a polyethylene glycol mixture with a molecular weight of 1200 (wherein 15.24g of TMPEG; 18.29g of polyethylene glycol), and add 20g of butanone for dilution, and continue the reaction for 3 hours. Then add 0.2g of 1,4-butanediol, react at 45°C for 45 minutes, add 1.06g of butanone...

Embodiment 2

[0024] Example 2: Distill the mixture of TMPEG and polyethylene glycol with a molecular weight of 1200 under reduced pressure for 1 hour at a temperature of 120° C. and a vacuum of 0.09 MPa, then cool down and seal for use. Add 9.87 g of glyceryl monostearate to a four-neck flask equipped with a stirrer and a thermometer, and distill under reduced pressure for 1 hour at a temperature of 120° C. and a vacuum of 0.09 MPa. Cool down to 60°C, add 0.02g of dibutyltin dilaurate, then dropwise add 11.67g of toluene diisocyanate, stir and raise the temperature to 80-85°C, and react for 2 hours. Then add 29.94g of TMPEG and polyethylene glycol mixture (23.02g of TMPEG; 6.92g of polyethylene glycol) with molecular weight of 1200, and add 20g of ethyl acetate to dilute, and continue to react for 3 hours. Then add 0.2g of 1,4-butanediol, react at 45°C for 45 minutes, then add 2.37g of 3,5-dimethylpyrazole, and continue the reaction for half an hour. Cool to room temperature, add 220 g of...

Embodiment 3

[0025] Example 3: The mixture of TMPEG and polyethylene adipate with a molecular weight of 2000 and polyethylene adipate was distilled under reduced pressure for 1 hour at a temperature of 120° C. and a vacuum of 0.09 MPa, then cooled and sealed for use. Add 14.34 g of glyceryl monostearate to a four-necked flask with a stirrer and a thermometer, and distill under reduced pressure for 1 hour at a temperature of 120° C. and a vacuum of 0.09 MPa. Cool down to 60°C, add 0.02g of dibutyltin dilaurate, then dropwise add 29g of toluene diisocyanate, stir and raise the temperature to 80-85°C, and react for 2 hours. Add the mixture (wherein 10.37g TMPEG; 61.13g polyethylene adipate) of TMPEG and polyethylene adipate that 71.5g molecular weight is 2000 then, and add 20g butanone and dilute, continue reaction 3 Hour. Then add 5.98g of bismethylolpropionic acid, react at 45°C for 45 minutes, add 8.0g of butanone oxime, and continue to react for half an hour. Cool to room temperature, a...

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Abstract

The invention discloses a preparation method of a crosslinkable block-grafted type high-molecular polymer. At present, the wide application of some polyurethane amphiphilic polymers in the fields of emulsion polymerization, pigment dispersion and the like is restricted due to limitation of the spatial topology structures of the hydrophilic chain segment and the oleophylic chain segment of the polyurethane amphiphilic polymer. Glycerin monostearate and polyisocyanate are used as raw materials and react with a mixed polyol of trimethylol propane poly(ethylene glycol) monomethyl ether and other polyols, finally chain extension, end sealing, emulsification, distillation and the like are performed to generate the crosslinkable block-grafted type high-molecular polymer. The special block-grafted structure of the polymer enables the polymer to have good surface activity, and the active groups in their structures are coordinated, so that the crosslinkable block-grafted type high-molecular polymer has a good application prospect in the fields of pigment dispersants, stabilizing agents, emulsion polymerization and the like; meanwhile a large amount of active groups are reserved on the polymer, and can be cross-linked with hydroxyl, amino or themselves during heating, and thus the polymer film has good water resistance, adhesive force and bonding strength.

Description

technical field [0001] The present invention relates to the field of macromolecular chemistry, in particular to a method for preparing a crosslinkable block-graft type polyurethane macromolecular polymer which has good application prospects in the fields of pigment dispersants, stabilizers and emulsion polymerization. . Background technique [0002] Water-based polyurethane (WPU) is a binary colloid system with water as the dispersion medium. Compared with solvent-based polyurethane, it has the advantages of non-combustibility, low odor, no pollution to the environment, energy saving, and convenient operation and processing. Therefore, it has attracted more and more attention. Note that it has gradually been applied in the fields of dispersants and emulsion polymerization. On the one hand, water-based polyurethane contains a large number of active groups such as isocyanate groups and hydroxyl groups, which can combine with hydroxyl groups and amino groups on fabrics or dyes...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/32C08G18/28C09D175/08C09B67/46B01F17/52C09K23/52
CPCC09D175/08C08G18/286C08G18/3206C08G18/4804C08G18/4833C08G18/6674C09B67/009C09K23/16
Inventor 张小伟宋金星王勇陈八斤施洪坤杨欣
Owner HANGZHOU TRANSFAR FINE CHEM CO LTD
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