41results about How to "Good oil proof" patented technology

The invention belongs to the technical field of high-molecular polymer synthesis, relates to preparation of a polymer material for paper cultural relic protection, in particular to a preparation method of the polymer material for paper cultural relic protection and application thereof. The preparation method of the polymer material for paper cultural relic protection comprises the steps that modified cellulose (MCC) and modified TiO2 serve as cores, styrene-acrylate copolymer serves as a shell, and a composite emulsion with a core-shell structure is obtained. According to the preparation method of the polymer material for paper cultural relic protection, the obtained protective material is good in stability and small in surface tension, and the excellent performance of water proofing, grease proofing, water resistance, acid and alkali resistance, bacterium resistance, reversibility and the like is achieved; the preparation technology is simple, operation is easy and convenient, applied solvent adopts water, pollution does not exist, and green and environmental protection are achieved. The polymer material and paper cultural relics have better compatibility, the thickness is ultra small, the transparency is good, the original appearance of the paper cultural relics is not affected, the principle of restoring the old as the old is followed, the reversibility is achieved, and a protective film can be removed.

The invention discloses an anti-fingerprint additive for a hard coating and a preparation method thereof. Its components are: perfluoropolyether, fluorine-containing polysiloxane, acrylate monomer and organosilicon ring compound. The preparation method includes: a) adding fluorine-containing polysiloxane and solvent A into a three-necked flask, fully stirring the above solution evenly, and heating to the reaction temperature; b) adding perfluoropolyether and solvent A into the three-necked flask while stirring , to obtain perfluoropolyether and organic fluorosilicon polymer; c) add acrylate monomer, catalyst and solvent A to the three-necked flask under stirring, react for 4-20h, then continue to drop organosilicon ring compound, react for 4-20 hours 10h; d) Cool to room temperature after the reaction, and dilute to 20% solid content with solvent B. The anti-fouling additive of the present invention exists stably at room temperature and has good compatibility with coatings. After UV curing and film formation, it can provide excellent water and oil repellency, anti-fouling, anti-fingerprint, smoothness, Heat resistance and friction resistance properties.

The invention discloses a UV photo-curing composition additive and a preparation method thereof. Raw materials for the additive include perfluorinated polyether containing polyether polyol groups, a monomer containing activated hydrogen groups and self-crosslinking functional groups and a non-fluorinated crosslinking agent, and the additive is prepared through reaction under a certain conditions. The additive is excellent in preservation stability before curing and can provide excellent waterproof, oil-proof, anti-fouling, anti-fingerprint and friction-resisting performance for a coating after curing. The UV photo-curing composition additive is mainly used for the coating having the waterproof, oil-proof, anti-fouling, anti-fingerprint and friction-resisting performance.

The invention relates to a post-finishing process for ready-made clothes, which adopts the one-step method of one-bath in the following working procedures of desizing, unwatering, soaking in treatment fluid, re-drying, pressing and baking for setting, and cooling. In preparing the treatment fluid, resin 5-10%, OLEOPHOBOL 4-8%, penetrant 0.1-0.25%, and catalyst 1-2.5% are included. After finishing, the ready-made clothes with no ironing and washing for 30 times can achieve the crease shedding of level 4, water resistance of level 5, oil resistance of level 5, and soil resistance of level 5, thereby having excellent water-washing serviceability, durability and shrink resistance. The formaldehyde content is lower than 75ppm. The post-finishing process has the advantages of little pollution, obvious effects of water resistance, oil resistance, soil resistance, and no ironing, good durability and so on, thereby being applied to the ready-made clothes made of natural fibers such as cotton, hemp, tencel and so on.

The present invention is a preparation method of fluorine-containing polyurethane leather waterproof coating. The method includes the following steps: heating the chain extender and isocyanate in N,N-dimethylformamide to 50-70°C, then reacting, heating the system to 70-90°C, adding short-chain branched fluoroalcohol (FA) , after the reaction, the system is cooled to 40-60 ℃, then the fluorine-free monomer is added, and the reaction is continued to obtain a fluorine-containing polyurethane solution; the obtained fluorine-containing polyurethane solution is coated on leather, and dried to obtain a fluorine-containing polyurethane waterproof coating . The present invention can realize the effect of the long-chain C8 leather waterproofing agent and overcome the disadvantage that it cannot be degraded.

The invention provides a hybrid polyurethane-polyacrylate dispersion containing fluorine and / or siloxane and a preparation method thereof. The interpenetrating network structure and the core-shell structure exist in the dispersion particles at the same time. -30%), initiator (0.1-2.0%), emulsifier (0.5-5%), chain transfer agent (0.01-0.5%) and deionized water (50-70%) through emulsion polymerization. The dispersion is white milky liquid without organic solvent, solid content of 30-50%, molecular weight of 10000-100000, pH value of 7-9, viscosity of 30-300cp, stable period of more than 1 year. Coating films prepared from this dispersion have excellent physical properties and low surface energy, and can be used to provide surface coatings with excellent water / fouling properties.