52results about How to "Extend the antifouling period" patented technology

The invention discloses a method for preparing a low-toxicity marine antifouling paint by applying Cu2O hollow submicrospheres, and belongs to the fields of preparation and application of inorganic functional materials and marine antifouling paints. The method applies the Cu2O hollow submicrospheres singly or the Cu2O hollow submicrospheres embedded with a nontoxic organic antifouling composition as an antifouling composition to prepare the low-toxicity marine antifouling paint; and the antifouling composition, resin base stock, pigment (filler), and solvent are added to a ball mill for grinding to prepare the marine antifouling paint, wherein the antifouling composition consists of the Cu2O hollow submicrospheres with adjustable grain diameter (150-500nm), hollow structures and porous surfaces or the Cu2O hollow submicrospheres embedded with other antifouling compositions. The method has the characteristics that the Cu2O grain diameter reaches nano/micron grade, and grains in the paint are distributed uniformly; and the special appearance of the hollow structures and the porous surfaces can be used for embedding and slowly releasing other nontoxic organic antifouling compositions, reduces Cu2O dosage and has the function of cooperative antifouling so as to prolong the antifouling term, strengthen the antifouling effect and reduce the emission pollution.

The invention provides copper-free and environment-friendly self-polishing ocean antifouling paint. The copper-free environment-friendly and self-polishing ocean antifouling paint is prepared from matrix resin A with self-polishing property, an organic antifouling agent B without any copper type antifouling agent, pigment filling C, an auxiliary agent D and a solvent E. The matrix resin A is characterized in that a preparation process comprises two steps: step 1: carrying out free radical copolymerization on acrylic acid or methacrylic acid and an ethenyl unsaturated monomer a1 without metal in a certain amount of solvent at certain temperature under the action of an initiator, so as to prepare an acrylic acid or methacrylic acid pre-polymer; step 2: carrying out refluxing reaction on the pre-polymer prepared by the step 1, saturated organic acid and oxide or hydroxide of zinc or a zinc salt at certain temperature; stopping the reaction until obtained effluent reaches a pre-set value, so as to obtain the matrix resin A.

The invention relates to a matrix resin having self-polishing performance and an environmentally-friendly type self-polishing antifouling coating prepared by the same; the matrix resin contains a functional group, so that the matrix resin has good self-polishing performance; according to the antifouling coating prepared by the matrix resin, the functional group-containing matrix resin on the surface of an antifouling coating layer is subjected to a hydrolysis reaction with weak alkaline seawater to generate a hydrophilic resin and is gradually dissolved in the seawater, at the same time, a coated antifouling agent is released, denudation of a surface layer is achieved, a newly-exposed coating layer continues to undergo a hydrolysis reaction with the seawater, and finally, the self-polishing effect of layer-by-layer stripping of the coating layers is achieved. The antifouling coating prepared by the matrix resin has the characteristics of controllable self-polishing performance, long anti-fouling efficiency period, excellent antifouling performance and the like.

The invention discloses ionic liquid marine antifouling paint, which comprises an antifouling paint matrix resin containing ionic liquid groups, an antifouling agent, a pigment filling material, an aiding agent and an organic solvent. The antifouling paint is mainly applied to the antifouling of a ship. In the ocean, based on the characteristic of the low surface energy of the paint, the adhering of marine organisms is effectively inhibited; an acrylic copolymer on the surface of the coating are hydrolyzed to release organic acid zinc or copper and the antifouling agent, so that the self polishing of the surface of the coating is realized; and the main chain of the hydrolyzed acrylic copolymer contains the ionic liquid groups with bactericidal activities, so that the efficient antifouling activity of the coating is maintained continuously, and the adhering of the marine organisms is prevented. Thus, the antifouling paint provided by the invention has the excellent long-term antifouling performance.

The invention discloses an environmental-protection type multi-element collaborative marine anti-fouling coating. The coating is composed of anti-fouling coating matrix resin containing an anti-fouling active group, a wetting and dispersing agent, a mixed organic solvent, a non-toxic anti-fouling agent, a pigment filler, a levelling agent, a defoaming agent and an anti-settling agent. The coating is non-toxic, does not pollute the environment, and is mainly applied in ship fouling resistance.

The invention relates to nontoxic or low toxic anti-fouling paint made by Chinese gall solvent extract which includes resin base metal, dye, anti-fouling agent, and limed rosin, and various auxiliary agents. The anti-fouling agent is formed by Chinese gall extract, or Chinese gall extract and cuprous oxide composite. It is proved that the anti-fouling paint has obvious anti-fouling effect. The new type low toxic anti-fouling paint can effectively prevent marine life defiling, and reduce cuprous oxide use level to realize pollution abatement by properly adjusting the composite proportion of the Chinese solvent extract and cuprous oxide.

The invention relates to a formula (I) compound containing the structural formula (refer to the Specification), in the formula, X1 refers to H and Cl; X2 refers to H, Cl and Br; R refers to CH3, CH2CH3, CH2(CH3)2, CH2CH2CH2CH3 and CH2CH2CH2CH2CH2CH(CH3)2. The invention also relates to a preparation method for the formula (I) compound and an acyclic acid zinc/copper resin adopting the compound as a comonomer, and the invention further relates to application of the resin compound in marine antifouling paint. According to the formula (I) structure, the acyclic acid zinc/copper resin adopting an ester derivative containing acrylamide indole as the comonomer has a relatively good self-polishing property, can slowly release an antifouling gramine derived structure and can effectively prevent adhesion of marine fouling organisms.

The invention relates to rosin organic acid metal salt resin with chemical structural characteristics and performances of acrylate metal salt resin and a preparation method and application of the rosin organic acid metal salt resin. The rosin organic acid metal salt resin disclosed by the invention has a structural formula of R-X-R1 (I), wherein R refers to acid radicals of benzoic acid, naphthenic acid, salicylic acid, furoic acid, parachlorobenzoic-acid, 2,4-dichlorobenzoic acid, proline, leucine, phenylalanine or arginine; and X refers to Zn<2+>, Cu<2+>, Mg<2+> or Ca<2+> metal ions; and R1 is selected from acid radicals of colopholic acid, ionated rosin acid or dimeric colopholic acid. The rosin organic acid metal salt resin disclosed by the invention is environment-friendly, has the similar chemical structural characteristics with the acrylate metal salt resin and is excellent in matching property with other components in the coating formula. The self-polishing antifouling paint taking the resin as a film forming matter is high in coating toughness, excellent in self-polishing performance and long in antifouling period, accords with the environment-friendly development trend of the antifouling coating and has wide application prospects.

The invention discloses a preparation method for antifouling paint matrix resin containing ionic liquid perssads. The method comprises the following steps of: firstly synthetizing a hydrophobicity ionic liquid monomer, then polymerizing a crylic acid soft or hard monomer, a hydrophobicity ionic liquid monomer, crylic acid or methacrylic acid, and unsaturated organosilicone monomer in a solvent by an initiator through radical polymerization to obtain a crylic acid prepolymer containing ionic liquid perssads so as to be reacted with a mixture of zinc hydroxide (copper), perfluorinated organic acid and monovalence organic acid to obtain the antifouling paint matrix resin containing ionic liquid perssads. The resin also has a self polishing property and a low surface energy property.

The invention provides a non-toxic marine ship antifouling coating material, which is prepared from the following raw materials in parts by mass: 100 parts of organic silicon resin, 1 to 3 parts of achitosan quaternary ammonium salt, 5 to 10 parts of fly ash nanoparticles, 0.5 to 1 part of a coupling agent, 3-5 parts of a curing agent, 0.01 to 0.1 part of a catalyst, 0.2 to 0.5 part of an antifoaming agent, and 0.2 to 0.5 part of a leveling agent. According to the invention, organic silicon resin is used as a matrix, nano fly ash is used as a carrier, and a chitosan quaternary ammonium salt loaded on the surface is used as a main antifouling agent, wherein the chitosan quaternary ammonium salt has good solubility and antibacterial property, has biocompatibility, and is safe and non-toxic,the fly ash nanoparticles have strong alkalinity, and the organic silicon is also a low surface energy material; by using a hydrophilic chitosan quaternary ammonium salt as a main antibacterial material, so that the use of a large amount of organic solvents is avoided, the cost is low, and less waste liquid is generated; and fly ash nanoparticles are activated to promote the self-polymerization of organic silicon resin molecules to form a layered structure with certain orientation so as to enhance the strength and elastic modulus of the coating material.

The invention relates to zinc salt-containing acrylic polyurethane resin as well as a preparation method and application thereof. A hydroxyl acrylic functional monomer and organic zinc salt are introduced into an acrylate resin structure at the same time, and then isocyanate reacts with hydroxyl in the acrylate resin structure to form the zinc salt-containing acrylic polyurethane resin. The resinis used as a film forming matter, and an environment-friendly antifouling agent, a pigment filler, an auxiliary agent, a solvent and the like are added, so that environment-friendly antifouling paintcan be obtained. The antifouling paint has excellent physical and mechanical properties; the antifouling property of the paint is excellent, and the antifouling period of the paint is long; the paintdoes not contain organic tin, dichlorodiphenyl trichloroethane and other antifouling agents; an antifouling agent compounding system meeting the requirements of environmental protection laws and regulations is used, and marine environment friendliness is achieved; good fresh water soaking resistance is achieved, and the use requirement that a ship enters a fresh water river can be met; the single-component paint is low in VOC content, simple and convenient to construct and easy to maintain; and expensive acrylate monomers are not used, so that the paint has very high cost performance and is beneficial to popularization and application.