Preparing for all-fluoroalkyl compound containing active end group and application thereof

A technology of perfluoroalkyl and active end groups, applied in the field of coatings, can solve problems such as difficulty in utilization and insolubility, and achieve the effects of ensuring communication quality, improving navigation speed, and excellent hydrophobic performance

Inactive Publication Date: 2009-12-09
MARINE CHEM RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But when n ≥ 8, some fluorides or fluorine-containing monomers exhibit solid waxy properties, which are difficult to dissolve and difficult to use

Method used

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  • Preparing for all-fluoroalkyl compound containing active end group and application thereof
  • Preparing for all-fluoroalkyl compound containing active end group and application thereof
  • Preparing for all-fluoroalkyl compound containing active end group and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: Preparation of a mixture of perfluoroalkyl compounds containing active end groups

[0037] Dissolve 60 parts of toluene diisocyanate in 140 parts of ethyl acetate, add 0.5 parts of dibutyltin dilaurate, and then add 800 parts of perfluoroalkylethanol. The reaction was stirred at 0-25°C for 4 hours and then at 60-80°C for 8 hours. After the reactant was cooled to room temperature, 1000 parts of a homogeneous liquid were obtained.

Embodiment 2

[0038] Example 2: Preparation of a mixture of perfluoroalkyl compounds containing active end groups

[0039] Dissolve 40 parts of diphenylmethane diisocyanate in 200 parts of ethyl acetate, add 0.5 parts of dibutyltin dilaurate, and then add 700 parts of perfluoroalkylethanol. The reaction was stirred at 0-25°C for 2 hours and then at 60-80°C for 6 hours. After the reactant was cooled to room temperature, 1000 parts of a homogeneous liquid were obtained.

Embodiment 3

[0040] Embodiment 3: the preparation of low surface energy coating

[0041] The product of Example 1 is coordinated with acrylic resin (brand BS2150), prepared according to the following steps:

[0042] Component A: 100 parts of BS2150 acrylic resin, 60 parts of pigments and fillers (30 parts of iron oxide red, 20 parts of zinc oxide and 10 parts of heavy calcium carbonate) and 60 parts of diluent (mixed with 50 parts of xylene and 10 parts of acetone) Add it into the container, disperse at a high speed of 2000rpm for 2 hours, when the fineness is 30-50μm, filter it with a 100-mesh filter, measure and pack;

[0043] B component is the product of embodiment 1;

[0044] After uniformly mixing components A and B at a weight ratio of 5:1, it is applied by spraying process, cured at room temperature, and the curing time is more than 10 hours to obtain a smooth and flat low surface energy coating. The water contact angle measurement of the surface energy of the coating reaches 109...

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PUM

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Abstract

The invention relates to the synthesis of a perfluoroalkyl compound containing an active end group from a hydroxyl group-containing perfluoroalkyl monomer A and a diisocyanate B in the presence of a solvent and a catalyst. And it is combined with hydroxyl-containing acrylic resin to obtain a low surface energy coating composition, which can be used on the shell of ships and submarines to reduce drag and prevent pollution, and to be used on aircraft engines to play the role of waterproof and anti-icing , Applied to the exterior walls of buildings, it has the functions of self-cleaning, anti-pollution and anti-graffiti.

Description

technical field [0001] The present invention relates to fluorine-containing compounds or compositions containing at least one fluorine-containing repeat unit and at least one fluorine-containing end group. The present invention also relates to coatings and the like, and the fluoride-containing composition can be used as a coating component or as other active additives. Articles to which the fluorochemical composition is added or used may have lower surface energies. Background technique [0002] Coatings or active additives mainly act on the surface of various objects for decoration or protection. Due to long-term exposure, it is very easy to be polluted by water, dust, oil, etc. To reduce the retention of dirt on the surface of the object or to make the surface of the object easier to clean, the surface of the coating needs to have a lower surface tension to improve the self-cleaning property of the surface of the object. [0003] Some fluorides or fluorine-containing co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C19/08C07C271/06C07C265/04C09D7/12C09D133/14
Inventor 王贤明杨凯张燕卢伟阎永江
Owner MARINE CHEM RES INST CO LTD
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