CN100376641C - Efficient thickening agent of latex paint coating - Google Patents
Efficient thickening agent of latex paint coating Download PDFInfo
- Publication number
- CN100376641C CN100376641C CNB02139461XA CN02139461A CN100376641C CN 100376641 C CN100376641 C CN 100376641C CN B02139461X A CNB02139461X A CN B02139461XA CN 02139461 A CN02139461 A CN 02139461A CN 100376641 C CN100376641 C CN 100376641C
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- water
- paint coating
- molecular resin
- thickening agent
- hydroscopic high
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Abstract
The present invention relates to a thickening agent which performs thickening (water-absorbing) and leveling functions in latex paint. The thickening agent is prepared from substances, such as macromolecule water-absorbing resin with polymerization degree and crosslinking degree, an inorganic additive, etc. The thickening agent has the advantages of low cost, easy acquirement of raw materials, simple preparation process and favorable brushing, sagging and leveling properties; if mixing components are adjusted, the thickening agent can also be widely used for agriculture, energy saving, etc.
Description
Content of the present invention belongs to the preparing technical field of chemicals, relates to a kind of chemistry painting industry auxiliary agent, particularly a kind of thickening material that plays thickening (suction) and levelling effect in emulsion paint coating.
Add the viscosity that thickening material can increase coating in the emulsion paint coating, make the pigment precipitation slowly, be easy to stir, and then guarantee the stability in storage of coating.Some thickening materials adds in emulsion paint coating, can make coating have certain denseness and thixotropy, when construction brushing laborsaving, can reduce drip and sagging when applying again, guarantee the outward appearance and the quality of coating.The settling velocity of the color stuffing particle under the perfect condition in (be newton's attitude fluid, solvent-free volatilization, temperature-resistant) emulsion paint coating is directly proportional with the particle radii quadratic power, is directly proportional with particle and density of liquid difference, is inversely proportional to the viscosity of liquid; The sagging rate of coating on vertical surface then is inversely proportional to the viscosity of coating and is directly proportional with the quadratic power of paint thickness.With regard to the emulsion paint coating system of reality and the describing love affairs condition is more more complicated than perfect condition situation, summary is got up, influencing the settled principal element of emulsion paint coating has viscosity and the interaction between density, color stuffing particle and liquid phase and charged character, additive and the storage environment etc. of particle of liquid phase in color stuffing size of particles, shape and density, the coating, and for given emulsion paint coating, latex and color stuffing determine that thickening material just becomes topmost influence factor undoubtedly.Though present thickening material well-known in the art has multiple brand, still also have the problem that some are difficult to overcome in actual use,, long storage time bad as levelling property can layering occur, cost is high.
The objective of the invention is to overcome the defective that prior art exists, provide that a kind of cost is low, preparation technology simple and can make emulsion paint coating have the emulsion paint coating efficient thickeners of good brushing performance and sagging flow leveling.
Be used to realize that the technical solution of foregoing invention purpose is such: the emulsion paint coating efficient thickeners that is provided is a kind of hydroscopic high-molecular resin and formulated new coating auxiliary agent of materials such as attapulgite and inorganic compound by the moderate polymerization degree and degree of crosslinking, and each material composition and the weight part ratio that constitute this auxiliary agent are:
Hydroscopic high-molecular resin 3～5,
Attapulgite 3～10,
Inorganic compound 50～90,
Water 300,
Wherein hydroscopic high-molecular resin is a kind of functional high-polymer that adopts starch and Acrylic Acid Monomer graft copolymerization to obtain, and its chemical reaction structural formula is
R in the formula
1Be CH
2=CH-COOH; Inorganic compound is made of kaolin or wilkinite.
In the system that constitutes by the above-mentioned substance composition, hydroscopic high-molecular resin is to introduce the high-water expansion compound that obtains on the macromolecular side chain by the monomer that monomer-grafted copolymerization process will contain hydrophilic polar group, be a kind of tridimensional network, water-swelling and don't the water-soluble gel that becomes, after high speed dispersion, become a stabilising dispersions that particle is trickle, system viscosity is increased.The water-retaining capacity of this material is considered to repel each other by the electrolytical particle charge of the molecule in the water and causes the result that the prevention expanded phase mutual effect of stretching and being caused by interlinkage structure (chemically crosslinked) and hydrogen bond is produced, and more simple, intuitive says it promptly is to be made of jointly grafting site and hydrogen bond to be cross-linked to form cancellated result.If add other component in this hydroscopic high-molecular resin, then it also has purposes widely fertile guarantor of the improvement of farm crop ecological vegetation, drought-resistant water-preserving, suction aspect industrial or agricultural such as fertile, energy-conservation.
Attapulgite such as neusilin etc. can form gel structure and play thickening power in system, gel structure is that the interaction by the different electric charges of particle surface forms, partly cause then is because particulate expands (being attached with moisture between particle), this gel structure is very obvious, but under shear action, reduce, it can set up again at once in shearing force cancellation back, can make coating reach gratifying levelling thus and don't as for excessive sagging, add the contradiction between the coating levelling and sagging behind the thickening material thereby solved preferably.
Independent separately in view of hydroscopic high-molecular resin, attapulgite and inorganic compound in mechanism aspect the thickening and effect, be not difficult to find out that its general effect will be better after they are combined according to a certain ratio.
The preparation method of thickening material of the present invention adopts earlier starch and Acrylic Acid Monomer graft copolymerization to produce to have the moderate polymerization degree and cross-linking density, water-fast high-water expansion water-absorbing resin, be mixed with certain density dispersion then, add attapulgite and inorganic compound again, mix and make product through high speed dispersion, its concrete preparation process is as described below.
1, the preparation of hydroscopic high-molecular resin: with the mass ratio mixing gelatinization by 4: 20 of water and starch, gelatinization point is 50～90 ℃, and the time is 0.5～2 hour; Pasted starch and Acrylic Acid Monomer are sent in the polymerization container by 2: 0.5 mass ratio, the initiator Diisopropyl azodicarboxylate or peroxidation phenylformic acid or the ammonium persulphate that add two quality of material 0.1%～1%, make the interior material of container carry out the graft copolymerization polyreaction, temperature of reaction is 25～80 ℃, and the reaction times is 2～5 hours; Reacted polymkeric substance is washed with the methyl alcohol of good hydrophilic property or ethanol or acetone solvent, the polymkeric substance drying after will washing then, pulverize after, the sub-water-absorbing resin finished product that secures satisfactory grades, the outward appearance of product is powdery, bulk or fibrous.
2, product preparation: will drop into high speed dispersion in the container in auxiliary agent weight part ratio through hydroscopic high-molecular resin and the water that above-mentioned technological process obtains, make it to become the trickle stable dispersion liquid solution of particle, water-absorbing resin solution after will disperseing then and attapulgite and inorganic compound mix in auxiliary agent weight part ratio, promptly get product.
Thickening material of the present invention is because the common reed has the characteristics of mineral-type thickening material and synthetic organic class thickening material, with low cost in addition, raw material is easy to get and preparation process condition is not harsh, thereby has a good result of use, the social demand amount of its product is big, rate of return on investment is high, can be under the situation that does not influence coating property, all or part of replacement is more known expensive thickening material goods at present, if on blending ingredients, adjust to some extent, also can be widely used in aspects such as agriculture and energy-conservation, produce excellent economic and social benefit.
Claims (2)
1. emulsion paint coating efficient thickeners is characterized in that the emulsion paint coating auxiliary agent that the feedstock production by following weight parts forms:
Hydroscopic high-molecular resin 3～5,
Attapulgite 3～10,
Inorganic compound 50～90,
Water 300,
Wherein hydroscopic high-molecular resin is a kind of functional high-polymer that adopts starch and Acrylic Acid Monomer graft copolymerization to obtain, and its chemical reaction structural formula is
R in the formula
1Be CH
2=CH-COOH; Inorganic compound is made of kaolin or wilkinite.
2. be exclusively used in the method for preparing the described emulsion paint coating thickening material of claim 1, it is characterized in that comprising preparation and two technological processs of product preparation of hydroscopic high-molecular resin:
2.1 the preparation of hydroscopic high-molecular resin: with the mass ratio mixing gelatinization by 4: 20 of water and starch, gelatinization point is 50～90 ℃, and the time is 0.5～2 hour; Pasted starch and Acrylic Acid Monomer are sent in the polymerization container by 2: 0.5 mass ratio, the initiator Diisopropyl azodicarboxylate or the peroxidation phenylformic acid that add two quality of material 0.1%～1%, make the interior material of container carry out the graft copolymerization polyreaction, temperature of reaction is 25～80 ℃, and the reaction times is 2～5 hours; Reacted polymkeric substance is washed with methyl alcohol or ethanol or acetone solvent, the polymkeric substance drying after will washing then, pulverize after, sub-water-absorbing resin finished product secures satisfactory grades;
2.2 product preparation: will drop into high speed dispersion in the container in auxiliary agent weight part ratio through hydroscopic high-molecular resin and the water that 2.1 technological processs obtain, make it to become the trickle stable dispersion liquid solution of particle, water-absorbing resin solution after will disperseing then and attapulgite and inorganic compound mix in auxiliary agent weight part ratio, promptly get product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02139461XA CN100376641C (en) | 2002-10-11 | 2002-10-11 | Efficient thickening agent of latex paint coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02139461XA CN100376641C (en) | 2002-10-11 | 2002-10-11 | Efficient thickening agent of latex paint coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1488686A CN1488686A (en) | 2004-04-14 |
| CN100376641C true CN100376641C (en) | 2008-03-26 |
Family
ID=34147456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB02139461XA Expired - Fee Related CN100376641C (en) | 2002-10-11 | 2002-10-11 | Efficient thickening agent of latex paint coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100376641C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104974607A (en) * | 2014-04-11 | 2015-10-14 | 无锡七点建材有限公司 | Mildew-proof internal wall latex paint and preparation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5164433A (en) * | 1991-04-17 | 1992-11-17 | Rheox, Inc. | Rheological agents and thickeners |
| CN1260769A (en) * | 1997-06-17 | 2000-07-19 | Ecc国际有限公司 | Aqueous suspensions of metakaolin and method of producing cementitious |
| CN1282745A (en) * | 1999-08-02 | 2001-02-07 | 吉林工学院 | Process without drying step for preparing resin with high absorption of water |
| CN1302834A (en) * | 2000-01-06 | 2001-07-11 | 赵殿栋 | Paint without adhesion to oil |
-
2002
- 2002-10-11 CN CNB02139461XA patent/CN100376641C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5164433A (en) * | 1991-04-17 | 1992-11-17 | Rheox, Inc. | Rheological agents and thickeners |
| CN1260769A (en) * | 1997-06-17 | 2000-07-19 | Ecc国际有限公司 | Aqueous suspensions of metakaolin and method of producing cementitious |
| CN1282745A (en) * | 1999-08-02 | 2001-02-07 | 吉林工学院 | Process without drying step for preparing resin with high absorption of water |
| CN1302834A (en) * | 2000-01-06 | 2001-07-11 | 赵殿栋 | Paint without adhesion to oil |
Non-Patent Citations (2)
| Title |
|---|
| 增稠剂在建筑乳胶漆中的应用. 李春生等.山东建材，第1期. 2000 * |
| 增稠剂在有光乳胶涂料中的应用. 方华.塑料工业，第6期. 1995 * |
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| Publication number | Publication date |
|---|---|
| CN1488686A (en) | 2004-04-14 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080326 Termination date: 20101011 |