CS199083B1 - Neutralizing dispersing agent - Google Patents
Neutralizing dispersing agent Download PDFInfo
- Publication number
- CS199083B1 CS199083B1 CS589377A CS589377A CS199083B1 CS 199083 B1 CS199083 B1 CS 199083B1 CS 589377 A CS589377 A CS 589377A CS 589377 A CS589377 A CS 589377A CS 199083 B1 CS199083 B1 CS 199083B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- dispersion
- neutralizing
- acid
- dry weight
- water
- Prior art date
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- 230000003472 neutralizing effect Effects 0.000 title claims description 10
- 239000002270 dispersing agent Substances 0.000 title description 4
- 239000006185 dispersion Substances 0.000 claims description 23
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 150000001340 alkali metals Chemical class 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 239000005018 casein Substances 0.000 claims description 3
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 claims description 3
- 235000021240 caseins Nutrition 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 229920002521 macromolecule Polymers 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 2
- 239000008116 calcium stearate Substances 0.000 claims description 2
- 235000013539 calcium stearate Nutrition 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229920001519 homopolymer Polymers 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- 235000006408 oxalic acid Nutrition 0.000 claims description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims 1
- 235000021355 Stearic acid Nutrition 0.000 claims 1
- 230000000996 additive effect Effects 0.000 claims 1
- 229910001424 calcium ion Inorganic materials 0.000 claims 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims 1
- 150000002500 ions Chemical class 0.000 claims 1
- 229910001425 magnesium ion Inorganic materials 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims 1
- 239000008117 stearic acid Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000000758 substrate Substances 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000005470 impregnation Methods 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- -1 magnesium cations Chemical class 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 238000005904 alkaline hydrolysis reaction Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 230000000887 hydrating effect Effects 0.000 description 1
- 229920013821 hydroxy alkyl cellulose Polymers 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 239000011508 lime plaster Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920005553 polystyrene-acrylate Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- PRWXGRGLHYDWPS-UHFFFAOYSA-L sodium malonate Chemical compound [Na+].[Na+].[O-]C(=O)CC([O-])=O PRWXGRGLHYDWPS-UHFFFAOYSA-L 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
Proto např. čs. patent č. 160 844 řečí úpravu alkalických podkladů proti odpařování vody a zvýšení adheze epoxiesterovými disperzemi, připravenými esterifikací epoxidových pryskyřic a mastných kyselin. Tento způsob úpravy podkladů řeší hydratacl pojiv pro následující nátěrové systémy, není však vhodný pro neutralizaci volných alkálií. Běžně používané impregnační prostředky na bázi zředěných vodních disperzí částečně zpevňují podklady, rovněž však neřeší neutralizaci volných alkálií a nezabraňují migraci těchto do povrchových úprav.Therefore, for example, MS. No. 160,844 discloses treating alkaline substrates to prevent water evaporation and increasing adhesion with epoxy dispersions prepared by esterification of epoxy resins and fatty acids. This method of treatment of substrates solves the hydrating binder for the following coating systems, but it is not suitable for neutralization of free alkali. Commonly used dilute aqueous dispersion impregnants partially solidify substrates, but they also do not solve the neutralization of free alkali and do not prevent the migration of these to surface treatments.
Uvedené nedostatky odstraňuje neutralizační disperzní prostředek na bázi vodních disperzí homopolymerních nebo kopolymerních makromolekulárních látek, který obsahuje dvojsytné kyseliny a/nebo jejich soli, jako je kyselina šlavelová, nebo malonová, nebo kyselé uhličitany alkalických kovů nebo fluorokřemičitany alkalických kovů nebo jejich vzájemné kombinace. Hydrofilní disperzní hmoty snadno vnikají do pórovitých podkladů a snižují jejich difuzní odpor a přísada kyselin nebo jejich vodorozpustných solí reaguje s volnými kationty alkalických zemin, zejména s kationty vápníku a hořčíku za vzniku ve vodě rozpustných sloučenin. Tím se zabraňuje migrace těchto solí vlivem vlhkosti, vyrovnává se nasákavost podkladů při zachování propustnosti vodních par v rozsahu 3 až 10. 104 gem“ hod-i a zamezuje se možnost alkalické hydrolýzy použité vodní disperze makromolekulární látky.The aforementioned drawbacks are eliminated by a neutralizing dispersion composition based on aqueous dispersions of homopolymeric or copolymeric macromolecular substances comprising dibasic acids and / or salts thereof, such as oxalic or malonic acid, or alkali metal or alkali metal fluorosilicates or combinations thereof. Hydrophilic dispersion compositions readily enter porous substrates and reduce their diffusion resistance, and the addition of acids or their water-soluble salts reacts with free alkaline earth cations, especially calcium and magnesium cations, to form water-soluble compounds. This prevents migration of the salt due to moisture equalizes the absorption of the substrate while maintaining the water vapor permeability in the range of 10 3 to 10 4 gcm "-i h and avoids the possibility of alkaline hydrolysis of an aqueous dispersion of a macromolecular substance.
K prodloužení účinku upravené disperze na rozpustné ionty alkalických kovů se s výhodou používají koloidní organické stabilizátory na bázi derivátů celulózy, jako jsou metylcelulóza, etylcelulóza, hydroxyalkylcelulózy nebo karboxymetylcelulóza nebo kyselý kasein, případně hydrofobní přísady, jako jsou stearany alkalickýoh kovů, zejména stearan vápenatý nebo stearan zinečnatý o specifickém povrchu větším než 10^ om^ g”·1·.Colloidal organic stabilizers based on cellulose derivatives such as methylcellulose, ethylcellulose, hydroxyalkylcellulose or carboxymethylcellulose or acid casein, or hydrophobic additives such as alkali metal stearates, especially calcium stearate or stearate, are preferably used to prolong the effect of the treated dispersion on soluble alkali metal ions. zinc having a specific surface area greater than 10 µm ^ g · 1 ·.
Příklad 1Example 1
Neutralizační disperzní prostředek tvoři vodní disperze polyvinylacetátu o sušině 50 % hmot., ve které se rozpustí 5 % hmot. kyseliny šíavelové počítáno na sušinu disperze. Před napouštěním betonu o obsahu 8 % hmot. vápenatých solí se disperze zředí vodou v hmotovém poměru 1:5 a takto zředěný roztok se na podklad nanáěí stříkáním nebo natíráním. Po 8 hod. působení klesne nasákavost podkladu z 7,3 % hmot. na 3,4 % hmot. a alkalita podkladu klesne z pH 9 (vodní výluh) na pH 7,2.The neutralizing dispersing agent comprises an aqueous dispersion of polyvinyl acetate having a dry weight of 50% by weight, in which 5% by weight of water is dissolved. oxalic acid calculated on the dry weight of the dispersion. Before impregnating concrete with a content of 8 wt. The calcium dispersion is diluted with water in a weight ratio of 1: 5 and the diluted solution is applied to the substrate by spraying or painting. After 8 hours of application, the water absorption of the substrate decreases from 7.3 wt. % to 3.4 wt. and the alkalinity of the substrate drops from pH 9 (water leach) to pH 7.2.
Příklad 2Example 2
Neutralizační disperzní prostředek tvoří vodní disperze polystyrenakrylétové o sušině 60 % hmot. přidáním 8 % hmot. šíavelanu vápenatého a 3,5 % hmot. kyselého kaseinu počítáno na sušinu disperze. Před napouštěním vépenocementové omítky se neutralizační prostředek zředí vodou v hmotnostním poměru 1:3. Před napouštěním byla nasákavost omítky 18,5 % hmot. a pH vodního výluhu 12,8. Po napuštění klesla nasákavost omítky na 5,6 % hmot. a pH vodního výluhu na 7,6.The neutralizing dispersing agent comprises a polystyrene acrylate aqueous dispersion having a dry weight of 60% by weight. by adding 8 wt. % calcium oxalate and 3.5 wt. acid casein calculated on the dry weight of the dispersion. Prior to impregnation of the cement-lime plaster, the neutralizing agent is diluted with water in a weight ratio of 1: 3. Before the impregnation the water absorption of the plaster was 18.5% by weight. and pH of the water extract 12.8. After impregnation, the water absorption of the plaster dropped to 5.6% by weight. and pH of the water extract to 7.6.
189083189083
Přiklad 3Example 3
Neutralizační prostředek tvoří vodní disperze kopolymeru batylakrylát-butylmetakrylátu o sušině 45 % hmot. K disperzi se přidá 13 % hmot. malonanu sodného, 1 % hmot. hydroxyetylcelulozy a 14 % hmot. stearanu zinečnatého počítáno na sušinu disperze. Disperze se před použitím zředí vodou v hmotnostním poměru 1:6 a plynosilikátový podklad se napustí stříkáním nebo natíráním. Nasákavost plynosilikátu klesne po napuštěni z 69,7 % hmot. na 15,7 % hmot. a pH vodního výluhu poklesne z 12,8 na 7,6.The neutralizing agent is an aqueous dispersion of a batyl acrylate-butyl methacrylate copolymer having a dry weight of 45% by weight. 13% wt. % sodium malonate, 1 wt. % hydroxyethyl cellulose and 14 wt. zinc stearate calculated on the dry weight of the dispersion. The dispersion is diluted 1: 6 with water before use and the gas-silicate substrate is impregnated by spraying or painting. The absorptivity of the gaseous silicate decreases from 69.7% by weight after impregnation. to 15.7 wt. and the pH of the water leachate drops from 12.8 to 7.6.
Neutralizačním disperzním prostředkem upravené povrchy je možno upravovat finálními úpravami nátěrovými hmotami, tenkovrstvými nástřiky, obklady apod., které po zreagování vykazují difúzi menší než 6 m. Pro povrchové úpravy s vyšší difúzí než je 6 m je nutno podklady vysušit a dodržet vlhkost pod 5 % hmot.Surfaces treated with a neutralizing dispersant can be treated by finishing with coatings, thin-layer coatings, linings, etc., which after treatment have a diffusion of less than 6 m. For surfaces with a diffusion of more than 6 m, the substrates must be dried and moisture below 5% wt.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS589377A CS199083B1 (en) | 1977-09-09 | 1977-09-09 | Neutralizing dispersing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS589377A CS199083B1 (en) | 1977-09-09 | 1977-09-09 | Neutralizing dispersing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS199083B1 true CS199083B1 (en) | 1980-07-31 |
Family
ID=5404734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS589377A CS199083B1 (en) | 1977-09-09 | 1977-09-09 | Neutralizing dispersing agent |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS199083B1 (en) |
-
1977
- 1977-09-09 CS CS589377A patent/CS199083B1/en unknown
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