Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Rare-earth-based complex marine antifouling agent and preparation method thereof

A technology of marine antifouling agents and complexes, applied in botany equipment and methods, biocides, animal repellents, etc., can solve problems such as damage to facilities and equipment, increased fuel consumption, economic losses and energy waste, and achieve Reduce repellency, increase permeability, long-lasting effect of antibacterial effect

Pending Publication Date: 2022-07-12
XIAMEN INST OF RARE EARTH MATERIALS
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Marine fouling refers to the growth of marine organisms on offshore facilities and equipment, causing damage to facilities and equipment or increasing fuel consumption, resulting in huge economic losses and energy waste

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rare-earth-based complex marine antifouling agent and preparation method thereof
  • Rare-earth-based complex marine antifouling agent and preparation method thereof
  • Rare-earth-based complex marine antifouling agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of rare earth salt solution: Weigh 20g of cerium chloride, add it into 180g of water, stir to dissolve, and set aside.

[0033] (2) Preparation of sodium pyrithione solution: weigh 50 g of sodium pyridinethione, add it to 150 g of absolute ethanol, stir to dissolve, and set aside for later use.

[0034] (3) Preparation of acidic α-amino acid solution: Weigh 25 g of glycine, add 175 g of deionized water, stir to dissolve, and set aside for later use.

[0035] (4) Under stirring conditions, the above-mentioned sodium pyrithione solution was added dropwise to the above-mentioned rare earth salt solution, the dropwise addition time was about 10 minutes, and the stirring was continued for 20 minutes after the dropwise addition was completed.

[0036] (5) Under stirring conditions, the above-mentioned acidic α-amino acid solution was added dropwise to the material obtained in step (4), the dropwise addition time was about 5min, and the stirring was continued f...

Embodiment 2

[0040] (1) Preparation of rare earth salt solution: Weigh 20 g of lanthanum nitrate, add it into 180 g of water, stir to dissolve, and set aside for later use.

[0041] (2) Preparation of sodium pyridinethione solution: weigh 60 g of sodium pyridinethione, add it to 140 g of absolute ethanol, stir to dissolve, and set aside for later use.

[0042] (3) Preparation of acidic α-amino acid solution: Weigh 20 g of serine, add it into 180 g of deionized water, stir to dissolve, and set aside for later use.

[0043] (4) Under stirring conditions, the above-mentioned sodium pyrithione solution was added dropwise to the above-mentioned rare earth salt solution, the dropwise addition time was about 20 minutes, and the stirring was continued for 30 minutes after the dropwise addition was completed.

[0044] (5) Under stirring conditions, the above-mentioned acidic α-amino acid solution was added dropwise to the material obtained in step (4), the dropwise addition time was about 20min, an...

Embodiment 3

[0048] A preparation method of a rare earth-based complex marine antifouling agent:

[0049] (1) Preparation of rare earth salt solution: Weigh 20 g of europium nitrate and add it to 180 g of water, stir to dissolve, and set aside.

[0050] (2) Preparation of sodium pyrithione solution: weigh 70 g of sodium pyridinethione, add it to 130 g of absolute ethanol, stir to dissolve, and set aside for later use.

[0051] (3) Preparation of acidic α-amino acid solution: Weigh 30 g of glutamic acid, add 170 g of deionized water, stir to dissolve, and set aside for later use.

[0052](4) Under stirring conditions, the above-mentioned sodium pyrithione solution was added dropwise to the above-mentioned rare earth salt solution, the dropwise addition time was about 5 minutes, and the stirring was continued for 40 minutes after the dropwise addition was completed.

[0053] (5) Under stirring conditions, the above-mentioned acidic α-amino acid solution is added dropwise to the material obt...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a rare-earth-based complex marine antifouling agent and a preparation method thereof, the structural formula of the effective component of the rare-earth-based complex marine antifouling agent is shown in the specification, R is H, alkyl, heterocyclic group or sulfydryl, and Re is selected from lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, yttrium and scandium rare earth elements. The antifouling agent is formed by coordination of sodium pyrithione, acidic alpha-amino acid and soluble rare earth salt, rejection of marine organisms to the antifouling agent is reduced, antibacterial and antifouling effects are obvious, permeability of the antifouling agent is increased, and the antifouling agent can better permeate into cells and be combined with intracellular structures, so that metabolism of bacteria is effectively inhibited, and the antifouling effect is improved. The antibacterial agent has the advantages of broad antibacterial spectrum, strong antibacterial ability, lasting antibacterial efficacy, low ecological safety risk and the like.

Description

technical field [0001] The invention belongs to the technical field of marine antifouling agents, in particular to a rare earth-based complex marine antifouling agent and a preparation method thereof. Background technique [0002] Marine fouling refers to the growth of marine organisms on offshore facilities and equipment, resulting in damage to facilities and equipment or increased fuel consumption, resulting in huge economic losses and energy waste. Therefore, people use various technical means to prevent the attachment and growth of marine organisms. At present, the most economical and effective prevention and control method is to apply a layer of antifouling paint on the facilities and equipment, and release the toxic antifouling agent through the antifouling paint to achieve the purpose of preventing the growth of marine organisms. At present, antifouling coatings are mainly composed of cuprous oxide, zinc oxide and organic antifouling agents, and self-polishing resins...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07F5/00A01N43/40A01P1/00A01P3/00C09D5/16C09D5/14C08K5/00
CPCC07F5/003A01N43/40C09D5/1625C09D5/14C08K5/0091
Inventor 宋立军王胜龙吴银财林凤龙李金蕾
Owner XIAMEN INST OF RARE EARTH MATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com