RO116288B1 - Process for preparing an acrylic or vynil methacrylic composition - Google Patents
Process for preparing an acrylic or vynil methacrylic composition Download PDFInfo
- Publication number
- RO116288B1 RO116288B1 RO9400843A RO9400843A RO116288B1 RO 116288 B1 RO116288 B1 RO 116288B1 RO 9400843 A RO9400843 A RO 9400843A RO 9400843 A RO9400843 A RO 9400843A RO 116288 B1 RO116288 B1 RO 116288B1
- Authority
- RO
- Romania
- Prior art keywords
- aqueous phase
- methacrylic
- preparing
- monomers
- phosphate
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims abstract description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 title claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 125000005395 methacrylic acid group Chemical group 0.000 title abstract 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000001488 sodium phosphate Substances 0.000 claims abstract description 9
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000008346 aqueous phase Substances 0.000 claims abstract description 6
- 239000000178 monomer Substances 0.000 claims abstract description 6
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims abstract description 5
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims abstract description 5
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims abstract description 5
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims abstract description 5
- 235000019799 monosodium phosphate Nutrition 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 4
- YAJYJWXEWKRTPO-UHFFFAOYSA-N 2,3,3,4,4,5-hexamethylhexane-2-thiol Chemical compound CC(C)C(C)(C)C(C)(C)C(C)(C)S YAJYJWXEWKRTPO-UHFFFAOYSA-N 0.000 claims abstract description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims abstract description 3
- 150000007524 organic acids Chemical class 0.000 claims abstract description 3
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 229910000397 disodium phosphate Inorganic materials 0.000 claims description 4
- 235000019800 disodium phosphate Nutrition 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 238000010557 suspension polymerization reaction Methods 0.000 claims description 3
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 claims description 2
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims description 2
- 239000003505 polymerization initiator Substances 0.000 claims 1
- SDVHRXOTTYYKRY-UHFFFAOYSA-J tetrasodium;dioxido-oxo-phosphonato-$l^{5}-phosphane Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)P([O-])([O-])=O SDVHRXOTTYYKRY-UHFFFAOYSA-J 0.000 claims 1
- 229910001379 sodium hypophosphite Inorganic materials 0.000 abstract description 4
- 239000000725 suspension Substances 0.000 abstract description 3
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 abstract description 2
- 230000000977 initiatory effect Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- 238000004043 dyeing Methods 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- 239000010452 phosphate Substances 0.000 abstract 1
- 230000000379 polymerizing effect Effects 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 239000004342 Benzoyl peroxide Substances 0.000 description 2
- 235000017858 Laurus nobilis Nutrition 0.000 description 2
- 244000125380 Terminalia tomentosa Species 0.000 description 2
- 235000005212 Terminalia tomentosa Nutrition 0.000 description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- -1 accelerators Substances 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Description
Invenția de față se referă la un procedeu de obținere a unei compoziții vinilmetacrilice sau acrilice, utilizată la prepararea amestecurilor de vopsire, sub formă de pulbere.The present invention relates to a process for obtaining a vinylmethacrylic or acrylic composition, used in the preparation of powder mixtures, in powder form.
Pulberile de vopsire sunt amestecuri complexe, care conțin o componentă de bază (rășină epoxidică, poliesteri, poliamide etc) copolimeri peliculogeni, agenți de modificare a proprietăților fizico-chimice (copolimeri vinil-(met)acrilici funcționali), agenți de plastifiere, umpluturi organice sau anorganice, întăritori, acceleratori, catalizatori, coloranți antioxidanți.Paint powders are complex mixtures, which contain a basic component (epoxy resin, polyesters, polyamides, etc.) pelicogenic copolymers, physical-chemical properties modification agents (functional vinyl- (meth) acrylic copolymers), plasticizing agents, organic fillers or inorganic, hardeners, accelerators, catalysts, antioxidant dyes.
Dezavantajul principal constă în depunerea compoziției, care are loc în câmp electrostatic, în stratul dorit, cu realizarea peliculei prin încălzirea reperului și, concomitent, a pulberii depuse.The main disadvantage is that the composition is deposited, which takes place in the electrostatic field, in the desired layer, with the realization of the film by heating the landmark and, simultaneously, of the deposited powder.
Pentru sinteza copolimerilor, se utilizează o largă gamă de monomeri cu grupări esterice precum și grupări funcționale, capabile să reacționeze între ele sau cu alte substanțe din sistem.For the synthesis of copolymers, a wide range of monomers with ester groups as well as functional groups are able to react with each other or with other substances in the system.
Problema pe care o rezolvă invenția constă în alegerea optimă a monomerilor precum și stabilirea compoziției optime a acestora.The problem to be solved by the invention is the optimal choice of monomers and the determination of their optimal composition.
Procedeul conform invenției elimină dezavantajul de mai sus, prin aceea că se supune polimerizării discontinue, în suspensie, un amestec constituit din 15...75 % stiren, 15...75 % metacrilat de butii și 1,5...10 % acid metacrilic, la o temperatură deThe process according to the invention eliminates the above disadvantage, in that it is subjected to discontinuous polymerization, in suspension, a mixture consisting of 15 ... 75% styrene, 15 ... 75% butyl methacrylate and 1.5 ... 10% methacrylic acid, at a temperature of
75...85 %, timp de 3...5 h, în prezență de 1,5...3 % în greutate raportat la total monomeri sistem de inițiere, realizat din peroxid de benzoil-peroxid de laurii, 0,1...0,3 % tert-dodecil mercaptan pentru reglarea masei moleculare, faza apoasă conținând 1 ...2 % fosfat disodic, 0,2...0,4 % hipofosfit de sodiu, 0,3...0,5 % hidroxietilceluloză și 2,5...5 % fosfat monosodiu drept reducător de solubilitate a acidului organic în faza apoasă.75 ... 85%, for 3 ... 5 h, in the presence of 1.5 ... 3% by weight relative to the total monomers initiation system, made from benzoyl peroxide-lauride, 0.1 ... 0.3% tert-dodecyl mercaptan for molecular mass regulation, aqueous phase containing 1 ... 2% disodium phosphate, 0.2 ... 0.4% sodium hypophosphite, 0.3 ... 0, 5% hydroxyethyl cellulose and 2.5 ... 5% monosodium phosphate as a soluble reducer of organic acid in the aqueous phase.
Invenția prezintă următoarele avantaje:The invention has the following advantages:
- se obține un copolimer stabil din punct de vedere fizico-chimic;- a physically-chemically stable copolymer is obtained;
- copolimerul conține grupe reactive carboxilice, capabile să reacționeze cu componeta de bază (rășina epoxidică), ceea ce mărește aderența la suport, dublând rezistența mecanică a acoperirii;- the copolymer contains carboxylic reactive groups, capable of reacting with the basic component (epoxy resin), which increases the adhesion to the substrate, doubling the mechanical strength of the coating;
- filmul realizat are un aspect decorativ, variind de la semi-mat la mat-rugos cu rezistență deosebită la medii corosive, agenți atmosferici, gaze agresive etc.- the film made has a decorative appearance, ranging from semi-matte to matte-rough with high resistance to corrosive environments, atmospheric agents, aggressive gases etc.
Se dau, în continuare, două exemple de realizare a invenției.Two examples of embodiments of the invention are given below.
Exemplul 1. Se supune polimerizării în suspensie, la o temperatură de 83°C, următorul amestec:Example 1. The following mixture is subjected to suspension polymerization at a temperature of 83 ° C:
părțile fiind exprimate în greutate.the parts being expressed by weight.
RO 116288 BlRO 116288 Bl
Prin polimerizare, se obține un copolimer sub formă de suspensie. Filtrat, spălat și uscat,copolimerul se prezintă sub forma unei pulberi fine cu granulația sub 0,63 mm, densitate aparentă 0,56 g/cm3 și punct de topire 160°C, pelicula generată fiind semimată. 5 oBy polymerization, a suspension copolymer is obtained. Filtered, washed and dried, the copolymer is in the form of a fine powder with a granulation below 0.63 mm, an apparent density of 0.56 g / cm 3 and a melting point of 160 ° C, the generated film being seeded. 5 o
părțile fiind exprimate în greutate.the parts being expressed by weight.
Se obține un produs sub formă de perle. După filtrare, spălare și uscare, pulberea rezultată are granulația sub 0,63 mm, densitate aparentă 0,53 g/cm3, punct de topire 65 170°C, pelicula generată fiind mat-rugoasă.A pearl product is obtained. After filtration, washing and drying, the resulting powder has a granulation below 0.63 mm, an apparent density of 0.53 g / cm 3 , mp 65 170 ° C, the film generated being matte-rough.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO9400843A RO116288B1 (en) | 1994-05-23 | 1994-05-23 | Process for preparing an acrylic or vynil methacrylic composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO9400843A RO116288B1 (en) | 1994-05-23 | 1994-05-23 | Process for preparing an acrylic or vynil methacrylic composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RO116288B1 true RO116288B1 (en) | 2000-12-29 |
Family
ID=20100775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO9400843A RO116288B1 (en) | 1994-05-23 | 1994-05-23 | Process for preparing an acrylic or vynil methacrylic composition |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO116288B1 (en) |
-
1994
- 1994-05-23 RO RO9400843A patent/RO116288B1/en unknown
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