CN1302835A - Water-proof single-component colour polyurethane paint and its preparing process - Google Patents
Water-proof single-component colour polyurethane paint and its preparing process Download PDFInfo
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- CN1302835A CN1302835A CN 99119948 CN99119948A CN1302835A CN 1302835 A CN1302835 A CN 1302835A CN 99119948 CN99119948 CN 99119948 CN 99119948 A CN99119948 A CN 99119948A CN 1302835 A CN1302835 A CN 1302835A
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Abstract
A water-proof single-component colour paint of polyurethane features its high elasticity and low-temp. flexibility because the high-molecular polyether 8200 and 1053 are used besides low-molecular polyether 220. It is prepared by one-step method, that is, the dewatering of raw materials, prepolymerization and preparing paint are perfomed in a single reactor. Its advantages are high safety and storage stability.
Description
The present invention relates to waterproof paint and preparation technology thereof.
Be used for building water-proof paint at present and mainly contain pitch, polyvinyl chloride glue, double-component polyurethane coating, two component tar polyurethane coating etc.Pitch need add heat construction, and high temperature is easily liquefaction trickling down, and is easy to crack under the low temperature.Though polyvinyl chloride glue can be constructed by normal temperature, be difficult to solidify, can't satisfy higher service requirements.In recent years Kai Fa double-component polyurethane coating (1994, P.27-28) No.5, was the binary liquid shape packing for Wang Fei dysprosiums etc., New Building Materials, need during construction to mix by a certain percentage, homogenize, therefore Chang Keneng causes quality problems.And performance such as tensile strength, unit elongation is not ideal enough.Though have recent years monocomponent polyurethane paint development report (Han Xilin, polyurethane industrial, Vol.12.No.2 in 1997, P.24-26; Han Xilin, chemical building material, 1997 are P.166), but because of this colo(u)r coating employing raw material is low-molecular-weight traditional polyethers, therefore the snappiness and the low temperature flexibility of filming is all lower.The tar oil type coating pollution is big, does not meet environmental requirement, has begun to eliminate gradually in China.The preparation technology of coating generally takes two step method (Pan Chunyue etc., Chinese tackiness agent, 1996, Vol.5.No.6, P.12-14), i.e. synthetic the and coating preparation of performed polymer divides the operation of two steps, easily introduces moisture content again in the coating preparation steps and influences the package stability of product.
In order to overcome the shortcoming of above-mentioned existence, the purpose of this invention is to provide a kind of water-proof single-component colour polyurethane paint, have snappiness and good low temperature flexibility.Another object of the present invention provides the preparation technology of water-proof single-component colour polyurethane paint, adopts single stage method, and this method can guarantee the security and the package stability of coating material production.
Water-proof single-component colour polyurethane paint of the present invention is to be the performed polymer of isocyanate group by the synthetic end group of polyethers and tolylene diisocyanate reaction, and it is formulated to be mixed with auxiliary agent.The constituent prescription of preparation waterproof paint is as follows:
Constituent proportioning (weight part)
Tolylene diisocyanate (TDI) 22-28
Polyethers 220 78-82
Polyethers 1053 32-36
Polyethers 8200 8-12
Solvent 24-30
Catalyzer 0.15-0.20
Softening agent 8-12
Filler 35-45
Pigment 0-5
Viscosity stabilizer 4-6
Anti-aging agent 2.2-2.6
Defoamer 4-7
Each constituent is the commercial goods in the above-mentioned prescription, and pigment can need optional commercial goods by the coating color matching.Solvent the best is a dimethylbenzene, and catalyzer the best is a triethylamine, and softening agent the best is a dibutylester.Filler can be a titanium dioxide, silicon-dioxide, lime carbonate, talcum powder, wilkinite etc.
The preparation technology of the poly-ammonia chromatic waterproofing paint of single-component of the present invention adopts step (still) method technology, it is the dehydration of fill color and polyethers feedstock composition, end group is that (operation synthetic and the coating preparation of performed polymer NCO) is to link up to carry out in a still to isocyanate group, concrete processing step is as follows, at first filling material and an amount of polyethers are ground to form 70-80 μ m fineness, stir dehydration 1-3 hour in 100-140 ℃ of decompression (vacuum tightness is 700-760mmHg) together with all the other polyethers.Under nitrogen protection material is cooled to 40-50 ℃, adds solvent then, tolylene diisocyanate and catalyzer temperature-elevating are to 75-95 ℃, and insulated and stirred was reacted 2-5 hour, and synthetic end group is isocyanate group (performed polymer NCO).Subsequently material was cooled to 40-50 ℃ hour, and added softening agent, anti-aging agent, bonding stablizer and defoamer again, stir mixed and vacuum deaerator 0.5-1 hour, discharging packs.
The coating that preparation technology of the present invention makes can be applicable to the waterproofing and leakage-stopping of roofing, metope, coiled material seam, inhabitation toilet, hypogee, furniture production.Its salient features (referring to embodiment) and bibliographical information value (Han Xilin, chemical building material, 1997, P.166) be compared as follows, see Table 1:
Table 1
Performance project bibliographical information 1# of the present invention 2# of the present invention 3# of the present invention
Tensile strength (MPa) 〉=1.65 4.78 4.22 4.28
Unit elongation (%) 〉=350 916 1,035 1021
Low temperature flexibility-30 ℃ flawless-45 ℃ flawless-45 ℃ flawless-45 ℃ flawless
Watertightness 0.3Mpa, 30min 0.3Mpa, 30min 0.3Mpa, 30min 0.3Mpa, 30min
Waterproof down waterproof down waterproof down waterproof down
Show that by above-listed performance comparison water-proof single-component colour polyurethane paint of the present invention has excellent unit elongation, tensile strength and outstanding low temperature flexibility.
Advantage of the present invention: the present invention is directed to the shortcoming that exists in the prior art, a kind of water-proof single-component colour polyurethane paint is provided, since in the formula constituent of waterproof paint of the present invention except adopting traditional low molecular polyether 220 (molecular weight is 2000) and adding high molecular weight polyether 8200 (molecular weight is 8000) and polyethers 1053 (molecular weight is 4800), therefore improved the length of long flexible chain in the base polyurethane prepolymer for use as, feasible flexible the increasing of filming, second-order transition temperature reduces, thereby make coating both have deep drawing quality (snappiness), have outstanding low temperature flexibility again.And in preparation technology, adopt single stage method, and can prevent the industrial accident that coating causes owing to " gel " in process of production, guarantee the production security and the package stability of coating.
The present invention is further elaborated by following examples, but does not limit the scope of the invention.
Embodiment 1. is with 50 parts of (weight part) polyethers 220 (production of Shanghai Gaoqiao chemical plant), 5 parts of talcum powder and 35 parts of titanium dioxides are ground to 70-80 μ m fineness and drop in the reactor, add 28 parts of polyethers 220 (production of Shanghai Gaoqiao chemical plant) then respectively, 32 fens polyethers 1053 (import) and 10 parts of polyethers 8200 (import), 130 ℃ and vacuum tightness 760mmHg decompression down stir dehydration 1 hour.Be cooled to 50 ℃ under nitrogen protection, add 24 parts of dimethylbenzene, 22 parts of TDI and 0.15 part of triethylamine are warming up to 75 ℃, and performed polymer is made in insulated and stirred reaction 5 hours.Be cooled to 50 ℃, add 8 parts of dibutylesters again, 2.2 parts of anti-aging agent, 5 portions of viscosity stabilizers and 5 parts of defoamers.Mixing and vacuum deaerator 1 hour, discharging packs.The coating products performance is a tensile strength (Mpa) 4.78, unit elongation (%) 916, and low temperature flexibility-45 flawless, watertightness is 0.3Mpa, and is waterproof under the 30min.
Embodiment 2. is with 1053,20 parts of polyethers 220 of 36 parts of polyethers, 40 parts of titanium dioxides, 5 parts of lime carbonate and 3 parts of iron oxide reds are ground to 70-80 μ m fineness and drop in the reactor, add 60 parts of polyethers 220 then respectively, 8 parts of polyethers 8200, dehydration 3 hours is stirred in decompression under 134 ℃ and vacuum tightness 700mmHg.Be cooled to 50 ℃ under nitrogen protection, add 27 dimethylbenzene, 25 parts of TDI and 0.20 part of triethylamine are warming up to 95 ℃, and performed polymer is made in insulated and stirred reaction 3 hours.Be cooled to 45 ℃, add 12 parts of dibutylesters again, 2.5 parts of anti-aging agent, 4 portions of viscosity stabilizers and 4 parts of defoamers, mixing and vacuum deaerator 30 minutes, discharging packs.The coating products performance is a tensile strength (Mpa) 4.22, unit elongation (%) 1035, and low temperature flexibility-45 ℃ flawless, watertightness is 0.3MP, and is waterproof under the 30min.
Embodiment 3. is with 45 parts of polyethers 220,30 parts of titanium dioxides and 15 parts of silicon-dioxide are ground to 70-80 μ m fineness and drop in the reactor, add 220,34 parts of polyethers 1053 of 37 parts of polyethers and 12 parts of polyethers 8200 then respectively, dehydration 1.5 hours is stirred in decompression under 100 ℃ and vacuum tightness 740mmHg.Under nitrogen protection, be cooled to 50 ℃, add 30 parts of dimethylbenzene, 28 parts of TDI, 0.17 part of triethylamine is warming up to 85 ℃, and performed polymer is made in insulated and stirred reaction 2 hours.Be cooled to 45 ℃, add 10 parts of dibutylesters again, 2.6 parts of anti-aging agent, 6 portions of viscosity stabilizers and 7 parts of defoamers, mixing and vacuum deaerator 30 minutes, discharging packs.The coating products performance is a tensile strength (Mpa) 4.28, unit elongation (%) 1021, and low temperature flexibility-45 ℃ flawless, watertightness is 0.3MP, and is waterproof under the 30min.
Claims (12)
1, a kind of water-proof single-component colour polyurethane paint is characterized in that described coating is to form by following constituent formulated:
Constituent proportioning (weight part)
Tolylene diisocyanate (TDI) 22-28
Polyethers 220 78-82
Polyethers 1053 32-36
Polyethers 8200 8-12
Solvent 24-30
Catalyzer 0.15-0.20
Softening agent 8-12
Filler 35-45
Pigment 0-5
Viscosity stabilizer 4-6
Anti-aging agent 2.2-2.6
Defoamer 4-7
2, a kind of preparation technology of water-proof single-component colour polyurethane paint, it is characterized in that adopting the dehydration of filling material and polyethers feedstock composition, end group is that the performed polymer of isocyanate group-NCO is synthetic, and the operation of coating preparation is to link up to carry out in a still, concrete processing step is as follows: at first filling material and an amount of polyethers being ground to 70-80 μ m fineness, is 700-760mmHg decompression dehydration 1-3 hour together with all the other polyethers 100-140 ℃ and vacuum tightness; Add solvent then, tolylene diisocyanate and catalyzer, performed polymer is made in reaction, and temperature of reaction 75-95 ℃, reaction times 2-5 hour; And then the adding softening agent, anti-aging agent, viscosity stabilizer and defoamer are mixed, and vacuum deaerator is mixed with coating.
3, chromatic waterproofing paint as claimed in claim 1, the solvent described in it is characterized in that filling a prescription is a dimethylbenzene.
4, chromatic waterproofing paint as claimed in claim 1, the catalyzer described in it is characterized in that filling a prescription is a triethylamine.
5, chromatic waterproofing paint as claimed in claim 1, the softening agent described in it is characterized in that filling a prescription is a dibutylester.
6, chromatic waterproofing paint as claimed in claim 1, the filler described in it is characterized in that filling a prescription can be titanium dioxide, silicon-dioxide, lime carbonate, talcum powder, wilkinite.
7, chromatic waterproofing paint as claimed in claim 1, the pigment described in it is characterized in that filling a prescription are commercially available pigment of all kinds.
8, the preparation technology of chromatic waterproofing paint as claimed in claim 2 is characterized in that the solvent that adopts among the preparation technology is a dimethylbenzene.
9, the preparation technology of chromatic waterproofing paint as claimed in claim 2 is characterized in that the catalyzer that adopts among the preparation technology is a triethylamine.
10, the preparation technology of chromatic waterproofing paint as claimed in claim 2 is characterized in that the softening agent that adopts among the preparation technology is a dibutylester.
11, the preparation technology of chromatic waterproofing paint as claimed in claim 2 is characterized in that the filler that adopts among the preparation technology is titanium dioxide, silicon-dioxide, lime carbonate, talcum powder, wilkinite.
12, the preparation technology of chromatic waterproofing paint as claimed in claim 2 is characterized in that the pigment that adopts among the preparation technology is commercially available pigment of all kinds.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991199480A CN1160428C (en) | 1999-11-02 | 1999-11-02 | Water-proof single-component colour polyurethane paint and its preparing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991199480A CN1160428C (en) | 1999-11-02 | 1999-11-02 | Water-proof single-component colour polyurethane paint and its preparing process |
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| CN1302835A true CN1302835A (en) | 2001-07-11 |
| CN1160428C CN1160428C (en) | 2004-08-04 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406530C (en) * | 2004-03-19 | 2008-07-30 | 陶宇 | Environmental protection type coating material and preparaton method |
| CN101624498B (en) * | 2008-07-10 | 2012-07-11 | 北京建筑材料科学研究总院有限公司 | Method for preparing single-component polyurethane waterproof paint by using hydrocarbon oil |
| CN103497661A (en) * | 2013-08-16 | 2014-01-08 | 安徽快来防水防腐有限公司 | Polyurethane waterproof paint |
| CN106410571A (en) * | 2016-08-31 | 2017-02-15 | 贵州航天电子科技有限公司 | Potting method for improving reliability of connector |
| CN107722228A (en) * | 2017-09-07 | 2018-02-23 | 河南金拇指防水科技股份有限公司 | A kind of superpower caking property polyurethane waterproof material manufacture method and waterproof material |
| CN108659696A (en) * | 2018-06-01 | 2018-10-16 | 宁夏西北雨王防水材料有限公司 | A kind of process for producing polyurethane water-proof paint |
-
1999
- 1999-11-02 CN CNB991199480A patent/CN1160428C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406530C (en) * | 2004-03-19 | 2008-07-30 | 陶宇 | Environmental protection type coating material and preparaton method |
| CN101624498B (en) * | 2008-07-10 | 2012-07-11 | 北京建筑材料科学研究总院有限公司 | Method for preparing single-component polyurethane waterproof paint by using hydrocarbon oil |
| CN103497661A (en) * | 2013-08-16 | 2014-01-08 | 安徽快来防水防腐有限公司 | Polyurethane waterproof paint |
| CN106410571A (en) * | 2016-08-31 | 2017-02-15 | 贵州航天电子科技有限公司 | Potting method for improving reliability of connector |
| CN107722228A (en) * | 2017-09-07 | 2018-02-23 | 河南金拇指防水科技股份有限公司 | A kind of superpower caking property polyurethane waterproof material manufacture method and waterproof material |
| CN108659696A (en) * | 2018-06-01 | 2018-10-16 | 宁夏西北雨王防水材料有限公司 | A kind of process for producing polyurethane water-proof paint |
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| Publication number | Publication date |
|---|---|
| CN1160428C (en) | 2004-08-04 |
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