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Polyurethane/polyacrylate interpenetrating network polymer emulsion and preparation method thereof

A technology of polyacrylate and polymer emulsion, which is applied in the field of polyurethane/polyacrylate interpenetrating network polymer emulsion and its preparation, can solve the problem of compatibility between macromolecules and the physical and chemical properties of film-forming temperature and decorative performance are not satisfactory, to achieve the effect of improving physical and chemical properties and decorative performance, and solving surface drying and storage problems

Inactive Publication Date: 2007-12-12
YANTAI HAOLIJIE WATER BASED COATING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the respective macromolecular chains of this interpenetrating network polymer emulsion have also reached the blending of the molecular size, which has a certain improvement compared with the blending of general macromolecular aggregation, but due to the limited compatibility between different macromolecules The entanglement and penetration of macromolecular chains within a limited concentration between the two layers cannot fundamentally solve the problem of compatibility between macromolecules
A polyurethane / polyacrylate latex interpenetrating network polymer emulsion material and its synthesis method disclosed in Chinese patent CN1597739, in order to change the compatibility problem between the above-mentioned (PU / PA) emulsion macromolecules, the central core is synthesized as polyurethane Polyacrylate graft copolymer, the core outer layer is polyacrylate interpenetrating network polymer, and the outermost layer is polyurethane hydrophilic polymer, specifically expressed as LINEPU / PA[1]PA[2] / PU, although it is relatively The compatibility between the LINEPU / PA macromolecules disclosed in the Chinese patent CN1355267 has been improved, but its film-forming temperature, physical and chemical properties and decorative properties after film-forming are still not satisfactory
At home and abroad, there is no introduction of vinyl ether groups into polyurethane / polyacrylate copolymers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Basic ratio:

[0032] Polycarbonate 28 (kg)

[0033] Isophorone diisocyanate (IPDI) 40 (kg)

[0034] Dimethylolpropionic acid (DMPA) 2.0 (kg)

[0035] Trimethylolpropane monoallyl ether (TMPDE40) 1.2 (kg)

[0036] Triethylamine (TEA) 3.5 (kg)

[0037] Trimethylolpropane diallyl ether (TMPDE80) 2.8 (kg)

[0038] Methyl methacrylate (MMA) 12.1 (kg)

[0039] Isobutyl methacrylate (MBA) 5.0 (kg)

[0040] Methacrylic acid (MAA) 1.0 (kg)

[0041] Chain extender 2.0 (kg)

[0042] Initiator 2.4 (kg)

[0043] The total weight of the above materials 100 (kg)

[0044] Deionized water 200 (kg)

[0045] N-Methylpyrrolidone (NMP) 3.0 (kg)

[0046] The preparation method is as follows:

[0047] (1) First, in the upper tank a, add isobutyl methacrylate MBA and a small amount of methyl methacrylate MMA (accounting for 30% of the total amount of MMA), and cyclohexanone peroxide as the initiator, stir well Standby, called a liquid; add methyl methacrylate MMA (accounting for 95% of the total ...

Embodiment 2

[0054] Use the same preparation method as in Example 1, except that the following basic formula is used:

[0055] Polyester 26 (kg)

[0056] 1,6-Hopped diisocyanate 40(kg)

[0057] Dimethylolpropionic acid (DMPA) 2.0 (kg)

[0058] Trimethylolpropane monoallyl ether (TMPDE40) 1.1 (kg)

[0059] Trimethylolpropane diallyl ether (TMPDE80) 6.9(kg)

[0060] Triethylamine (TEA) 3.5 (kg)

[0061] Methyl methacrylate (MMA) 10.7 (kg)

[0062] Isobutyl methacrylate (MBA) 4.4 (kg)

[0063] Methacrylic acid (MAA) 1.0 (kg)

[0064] Chain extender 2.0 (kg)

[0065] Initiator 2.4 (kg)

[0066] The total weight of the above materials 100 (kg)

[0067] Deionized water 200 (kg)

[0068] N-Methylpyrrolidone (NMP) 3.0 (kg)

[0069] The polyurethane / polyacrylate interpenetrating network polymer emulsion of the product of the present invention with 8% molecular weight of the alkenyl ether group is prepared.

Embodiment 3

[0071] Use the same preparation method as in Example 1, except that the following basic formula is used:

[0072] Polycarbonate 20 (kg)

[0073] Isophorone diisocyanate (IPDI) 45 (kg)

[0074] Dimethylolpropionic acid (DMPA) 2.0 (kg)

[0075] Trimethylolpropane monoallyl ether (TMPDE40) 0.8 (kg)

[0076] Triethylamine (TEA) 3.5 (kg)

[0077] Trimethylolpropane diallyl ether (TMPDE80) 14.2 (kg)

[0078] Methyl methacrylate (MMA) 6.4 (kg)

[0079] Isobutyl methacrylate (MBA) 2.7 (kg)

[0080] Methacrylic acid (MAA) 1.0 (kg)

[0081] Chain extender 2.0 (kg)

[0082] Initiator 2.4 (kg)

[0083] The total weight of the above materials 100 (kg)

[0084] Deionized water 200 (kg)

[0085] N-Methylpyrrolidone (NMP) 3.0 (kg)

[0086] The polyurethane / polyacrylate interpenetrating network polymer emulsion of the product of the present invention with 15% molecular weight of the alkenyl ether group is prepared.

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Abstract

The invention discloses a polymer emulsion interpenetrated with polyurethane / polyacrylacid ester and the preparation method. Said polymer emulsion is introduced with vinyl ether group, the structural formula is R- (O-R1)n, R is the main body of said polymer emulsion, R1 is vinyl- containing group, n is 1- 4. The invention employs multiple crosslinking technique to introduce vinyl ether group into said polymer emulsion, which reduces filming temperature and increases physical and decoration property for said polymer emulsion. There is no inhibiting action for vinyl ether polymerization by oxygen, so the surface dry and storage problem for general water- brone oxiding system can be solved. The product in this invention is mainly used for wood, metal and plastic coating and protection.

Description

Technical field [0001] The invention relates to a polyurethane / polyacrylate interpenetrating network polymer emulsion and a preparation method thereof. More specifically, the present invention relates to a polyurethane / polyacrylate interpenetrating network polymer emulsion with a certain amount of alkenyl ether groups in the molecular body and a preparation method thereof. Background technique [0002] As we all know, environmentally friendly materials are a new field that has attracted the attention of the world in recent years. Because they can significantly reduce environmental pollution and harm to the health of producers during production and use, they have developed rapidly. In recent years, due to the requirements of safety, sanitation and environmental protection, the coating and adhesive industry has gradually changed from solvent-based to water-dispersed type worldwide. Compared with solvent-based products, polyacrylate (PA) emulsions and polyurethane (PU) emulsions hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/02
Inventor 宫新荣刘毅徐维民
Owner YANTAI HAOLIJIE WATER BASED COATING
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