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Preparation method of organic fluorine modified hyperbranched water-based polyurethane

A water-based polyurethane and organic fluorine technology, applied in the field of water-based polyurethane, can solve the problems of easy gelation, poor flexibility of polyurethane, and inability to achieve water dispersion, and achieve the effects of increasing water dispersibility, simple process, and avoiding product performance degradation.

Active Publication Date: 2015-09-02
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN101440150 (2009) reacts diisocyanates with diols containing hydrophilic groups to generate hydrophilic monomers, and uses hydrophilic monomers and bB 2 Monomer synthesized hyperbranched waterborne polyurethane, but the flexibility of this polyurethane is poor
Chinese patent CN101445697 (2009) synthesizes a linear polyurethane prepolymer with diisocyanate, oligomer diol and diol chain extender containing hydrophilic groups, and the linear polyurethane prepolymer is grafted onto the hydroxyl-terminated hyperbranched polymer Generate hyperbranched polyurethane, since the hyperbranched polymer does not contain hydrophilic groups, it cannot meet the requirements of water dispersion, and this reaction is easy to gel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation of hyperbranched polymers includes the following raw materials:

[0031] IPDI 65.2 copies

[0032] DMPA 6.6 parts

[0033] DEOA 28.2 parts

[0034] DMF 100 parts

[0035] The specific preparation method is as follows:

[0036] Weigh IPDI and DMPA and dissolve in N,N-dimethylformamide (DMF), stir evenly, pass nitrogen gas, remove the air in the system, raise the temperature to 85°C for 1.5h; cool down to -5~0°C, Slowly add the DMF solution of DEOA dropwise, continue to stir for 30 minutes after the dropwise addition, raise the temperature to 60° C., and react for 2.0 hours to obtain hyperbranched polyurethane (HBPU).

[0037] The preparation of hyperbranched waterborne polyurethane comprises the following raw materials:

[0038] TDI 26.2 parts

[0039] N210 60.2 parts

[0040] DMPA 4.8 parts

[0041] BDO 1.6 parts

[0042] HEMA 6.2 parts

[0043]HBPU 11 parts

[0044] 3.4 parts of TEA

[0045] The specific preparation method is as follows:

...

Embodiment 2

[0054] The preparation of hyperbranched polymers includes the following raw materials:

[0055] (with embodiment 1)

[0056] The specific preparation method is as follows:

[0057] (with embodiment 1)

[0058] The preparation of hyperbranched waterborne polyurethane comprises the following raw materials:

[0059] IPDI 33.4 copies

[0060] N210 60.2 parts

[0061] DMBA 5.2 copies

[0062] BDO 1.6 parts

[0063] EtOH 1.1 parts

[0064] HEMA 3.1 parts

[0065] HBPU 11 parts

[0066] 3.4 parts of TEA

[0067] The specific preparation method is as follows:

[0068] Weigh IPDI and N210 (relative molecular mass: 1000), blow in nitrogen, remove the air in the system, react at 85°C for 1.5 hours; add DMBA and BDO, react at 85°C for 2.5 hours; cool down to 50°C, add a small amount of acetone to reduce system viscosity, adding EtOH and HEMA for partial end-capping reaction for 1.5 hours to obtain a linear polyurethane prepolymer; The solvent was removed by rotary evaporation....

Embodiment 3

[0075] The preparation of hyperbranched polymers includes the following raw materials:

[0076] (with embodiment 1)

[0077] The specific preparation method is as follows:

[0078] (with embodiment 1)

[0079] The preparation of hyperbranched waterborne polyurethane comprises the following raw materials:

[0080] TDI 26.2 parts

[0081] PTMEG 60.2 parts

[0082] DMPA 4.8 parts

[0083] BDO 1.6 parts

[0084] HPMA 6.8 parts

[0085] HBPU 13 parts

[0086] 3.4 parts of TEA

[0087] The specific preparation method is as follows:

[0088] Weigh IPDI and PTMEG (relative molecular mass: 1000), feed nitrogen, remove the air in the system, react at 85°C for 1.5 hours; add DMPA and BDO, react at 85°C for 2.5 hours; cool down to 50°C, add a small amount of acetone to reduce system viscosity, add HPMA to carry out partial capping reaction for 1.5 hours, and obtain linear polyurethane prepolymer; Remove by evaporation.

[0089] Preparation of organic fluorine modified hyperbra...

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Abstract

The invention provides a preparation method of organic fluorine modified hyperbranched water-based polyurethane. The method comprises the following steps: (1), synthesizing water-based terminal hydroxyl hyperbranched polyurethane core; (2), synthesizing a double bond end capped linear polyurethane prepolymer through diisocyanate, low polymer divalent alcohol, a chain extendor, an end-capping reagent and the like; (3), grafting linear polyurethane onto terminal hydroxyl hyperbranched polyurethane; (4), leading a fluorine element onto a polymer through an emulsion method, so as to obtain the organic fluorine modified hyperbranched water-based polyurethane. According to the organic fluorine modified hyperbranched water-based polyurethane provided by the invention, raw materials are cheap and readily available, and are wide in sources, the synthesis process is simple, and industrialized production is facilitated. The organic fluorine modified hyperbranched water-based polyurethane is appropriate to be used independently, can be matched with other water-based resins, can be applied to the fields of water-resistant paints, environment-friendly water-based adhesives, water-based paints and the like, and has a broad application prospect.

Description

technical field [0001] The invention relates to the field of water-based polyurethane, in particular to a method for preparing organic fluorine-modified hyperbranched water-based polyurethane. Background technique [0002] As early as 1952, Flory theoretically proposed AB n (n≥2) monomers can form highly branched polymers through self-condensation, but it has only received widespread attention in recent years. Highly branched polymers can be divided into two broad categories: dendrimers and hyperbranched polymers. Dendritic macromolecules have a regular structure. The whole macromolecule is a regular spherical shape. There are only branched structures and terminal structures in the molecule, no linear structure, and the relative molecular mass distribution is relatively narrow. The structure of hyperbranched polymers is irregular, and the entire macromolecular structure is ellipsoidal. The molecule includes branched structure, terminal structure and linear structure, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/10C08G18/66C08G18/48C08G18/32C08G18/34C08G18/64C08G18/83
CPCC08G18/10C08G18/3206C08G18/3275C08G18/34C08G18/348C08G18/4825C08G18/64C08G18/667C08G18/6692C08G18/83
Inventor 杨建军吴庆云张建安吴明元张晓辉
Owner ANHUI UNIVERSITY
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