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Add：Jiangyin Xuxiake Huangtang Industrial Park
Tel：0510-86800370 86150525
Fax：0510-86150525
Web：www.jiafengchemical.com |
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| POLYVINYLPYRROLIDONE |
一、CHEMICAL NAME：POLYVINYLPYRROLIDONE（POVIDONE）
二、CTFA NAME：POLYVINYLPYRROLIDONE (ABB.PVP)
三、CAS No：9003-39-8
四、MOLECULAR FORMULA： (C6H9NO)n
五、Chemical structural formula：
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六、PROPERTIES:White or yellow-white powder or clarifies transparently and the thick solution, easy to dissolve in the water, mellow, in the amine and the halohydrocarbon, does not dissolve in the acetone, the ether and so on. Has the fine solubility, the biological intermiscibility, the physiological inertia, Cheng Moxing, membrane body protection ability and many kinds of organic, inorganic compound compound ability, the para acid, the salt and hot stable, therefore has the widespread use.
七、QUALITY SPECIFICATION OF TECH. GRADE
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NAME
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K-VALUE
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Vinylpyrrolidone
%
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Water
%
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Residue on ignition
%
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JSolid content
%
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PH
(5% in aqueous solution)
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k15
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12.8~17.2
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≤0.2
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≤5.0
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≤0.1
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≥95
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3.0~7.0
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K30
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27.0~32.4
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≤0.2
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≤5.0
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≤0.1
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≥95
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3.0~7.0
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K30（Solution）
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27.0~32.4
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≤0.2
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≤5.0
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≤0.1
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30±1
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5.0~8.0
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K90
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81.0~97.2
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≤0.2
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≤5.0
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≤0.1
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≥95
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5.0~9.0
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K90（Solution）
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90.0~103.0
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≤0.2
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≤5.0
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≤0.1
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20±1
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7.0~10.5
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八、Application of Tech. grade PVP
1. Application in cosmetic
Application in cosmetics research began in the 1960 of the 20th century, protect the law now in shampoo products, skin care products, decorations and other widely used, the most prominent of which is the shampoo in the hair care applications, as a good surfactant, added PVP in the shampoo foam stability. In PVP with any other cosmetic effect mainly on the stability of emulsions, suspensions, and other dispersions, moisturizing skin care products, film effects, such as the role of PVP in the sunscreen is not just wet, even more important is isolated from the Sun the skin by forming film, play a protective role of skin. In addition, the PVP in other areas, such as pigment stability agent, deodorant, spray, toothpaste, shaving cream, and many have special uses in cosmetics.
2. Application in writing ink and printing ink
PVP has a good bond, glue, ink, ink can be firmly attached to the written and printed words on paper instead of peeling and fading. Furthermore, the PVP on inorganic pigments, organic pigments, dispersions are well dispersed stabilization effect, can be uniformly dispersed and ink for ink system, should not be precipitate, do not plug the pen and various types of nozzle, handwriting shades are the same. While PVP non-volatile, its role and feature a durable, especially of printing or printing long to stop operation of the equipment will not be blocked nozzles, with repeated injection of smooth writing performance. PVP for ink, ink is low molecular weight of PVP K-12 to PVP K-30
3. Application in paper and other Office supplies
In the paper industry, PVP for improving paper strength, increase soluble dye and dispersed pigments, in deinking of waste paper, rags, and beating decomposition and rendering are important auxiliaries. As coating Shi, can improve paper of gloss, and can printing sexual and anti-oil sexual, special Shi in spray printing with paper surface James has with PVP of transparent coating, will makes spray printing ink in paper Shang fast drying, the transparent layer has good of sucking ink water, does not dissolved Yu water, has better of solidification sexual, and due to transparent and high speed imaging, special applies more color of ink spray printing
Usually glue in using will encountered many inconvenience, only solid paste at room temperature for solid, can directly wipe using, overcome has liquid glue or stick heavy shaped paste using of inconvenience of Department, solid paste usually by three species function different of material composition, is assigned shaped agent, and solvent and sticky received agent resin, sticky received agent most common is polyvinylpyrrolidone (PVP), using molecular weight from 40 000-90 000 (K30) to 10 000,000-13 000 000 (K90), adjust the excipient, the ratio between PVP and solvents, can be made into different hardness of Rod-like solid paste.
Other glue bonding agent of PVA, vinyl formamide, polyacrylate copolymer poly acid, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, degradation of water ethoxylation of soluble starch, starch, polyvinyl acetate, polyvinyl ether, water soluble or water dispersible polymers such as PVC. These polymers as a paste (especially solid paste) bonding agent component of superior performance than PVP, PVP reduced production costs, more and more solid glue factory with PVP.
Ballpoint pen with ink, ink added PVP K-30 played a role of protective colloid, thickening, increasing viscosity, writing fluently, do not overflow, colorfast, can also reduce the wear and tear of ball, and extend its service life.
4. Application in organic pigments
PVP has a good film, soluble in water and soluble in some organic solvents, substances used in the solvent of pigments in most organic solvents, and PVP as the molecular weight increases, film better. In organic solvent species of dissolved sexual poor, using PVP (molecular weight is greater than 30,000) processing pigments particles, due to PVP and pigments molecular of affinity sexual and in pigments surface formed a layer transparent of film, formed of film should not be dissolved in organic solvent, so not is damage, using does not produced color material diffusion phenomenon, does not effect character, and can improve pigments of gloss and dispersion, partition has organic pigments and external environment of contact, turn indirect to gives has organic pigments chemical stability and hot stability, Avoid the external environment some substance or chemical reactions caused by light and heat, improve pigment light solid performance. PVP is used for surface treatment of organic pigments PVP-K30, PVP-K90 or PVP VA64. After PVP between organic pigment particle size 0.1~10 μm. Amount of PVP is 5~10% on the quality of organic pigments. Pigments of the PVP surface treatments available are: protective and decorative coatings, such as varnish, paint and so on; aqueous dispersions; printed, colored ink, fabric paint, latex and plastic, and so on. PVP superior dispersion can also be used for carbon black, phthalocyanine, titanium dioxide and other pigment dispersion.
5. Applicaion in paints and coatings
Paper coated with transparent printing ink containing PVP is quick-drying, good ink absorption of water, does not dissolve in water, freezing, diffusion of better. In addition, the PVP in other coating, conductive coating, electrode coated with paint, leakage will have important uses. Outside of the conductive material such as insulation, after repeated sudden collapse in heat, cold, rain, aging or rupture or leakage because of water seepage. In insulated layer of external formed a layer PVP film (PVPK90), while PVP film is transparent of, does not effect insulated layer of character, on the, PVP film and insulated layer bonding in together, to insulated layer and outside light, and hot, and rain, isolation up, avoid has water rupture and caused of leakage phenomenon, reduced has due to light, and hot and caused of aging speed, extended has wire of using life, while also appropriate of increased has wire of hardness. |
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