CS239174B1 - Method of painted materials surfaces treatment with high content of hydroxyl groups in corona discharge - Google Patents
Method of painted materials surfaces treatment with high content of hydroxyl groups in corona discharge Download PDFInfo
- Publication number
- CS239174B1 CS239174B1 CS839703A CS970383A CS239174B1 CS 239174 B1 CS239174 B1 CS 239174B1 CS 839703 A CS839703 A CS 839703A CS 970383 A CS970383 A CS 970383A CS 239174 B1 CS239174 B1 CS 239174B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- corona discharge
- hydroxyl groups
- cardboard
- high content
- surfaces treatment
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000000463 material Substances 0.000 title claims description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 title claims description 8
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 6
- 230000005865 ionizing radiation Effects 0.000 claims description 2
- 239000011111 cardboard Substances 0.000 abstract 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 3
- 238000004513 sizing Methods 0.000 abstract 3
- 150000008064 anhydrides Chemical class 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 239000000123 paper Substances 0.000 abstract 1
- 239000011087 paperboard Substances 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treatments Of Macromolecular Shaped Articles (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
Vynález rieši glejacie zmesi pre povrchové glejenie papiera, kartónu a lepeniek. Jeho podstata spočívá v tom, že sa na povrch posobí v zápornom koronovom výboji ionizačným žiarením pri intenzitě elektrického prúdu 0,5 až 20 mA, napátí 10 kV, po dobu 20 až 60 sekund za přítomnosti pár anhydridu kyseliny octovej. Predmet vynálezu sa dá využívat v obalovej technike, a to pri glejení papiera, kartónu a lepeniekThe present invention provides surface sizing compositions sizing paper, cardboard and cardboard. his the essence is that it surface it will ionize in the negative corona discharge radiation at electric intensity current 0.5 to 20 mA, voltage 10 kV, for 20 to 60 seconds in the presence of an anhydride pair acetic acid. The subject of the invention can be used in packaging technique, namely sizing paper and cardboard and cardboard
Description
Vynález sa týká sposobu úpravy povrchov natieraných materiále v s vy sokým Obsahem hydroxylových skupin v korónovom výboji.The present invention relates to a method for treating surfaces coated with high hydroxyl groups in a corona discharge.
V podmienkach niektorých tlačových technik (hlavně ofset) sa vyžaduje určitý stupeň ich odolnosti voči vodě (hydrofóbnosť), s ktorou dochádza potláčaný materiál pri tlačovom postupe do styku.Some printing techniques (mainly offset) require some degree of water resistance (hydrophobicity) with which the printed material is in contact with the printing process.
Povrch takýchto materiálov, ak je zuštachtený činidlami obsahujúcimi vo svojej molekule hydroxylové skupiny (napr. polyvinylalkohol) túto schopnost nemá, je hydrofilný a je ho potřebné upravit tak, aby túto schopnost odpudzovať vodu, získal. Toto sa v- súčasnosti prevádza tak, že do náterovej farby sa pridávajú činidlá schopné sa viazať polykomdenzačnou reakciou na hydroxylové skupiny (napr. živice), pri presnej hodnotě alkality reagujúceho prostredia a príslušnej teplote, pri ktorej táto reakcia prebieha.The surface of such materials, when sealed with hydroxyl group-containing agents (e.g., polyvinyl alcohol), does not have this capability, is hydrophilic and needs to be modified to provide water-repellent properties. This is currently done by adding to the paint a reagent capable of binding by a polycondensation reaction to hydroxyl groups (e.g. resins), at the exact alkalinity of the reacting medium and at the appropriate temperature at which the reaction takes place.
Perspektivnějším a ovel'a účinnějším je sposob úpravy podta vynálezu, kde sa působí na povrch materiálu ionizačným žiarením v zápornom korónovom výboji v parách anhydridu kyseliny octovej o intenzitě elektrického prúdu 0,5 až 20 mA, napatí 10 kV a pri době 20 až 60 s.A more promising and much more efficient method of treatment according to the invention is to treat the surface of the material with ionizing radiation in a negative corona discharge in vapors of acetic anhydride with an electric current intensity of 0.5 to 20 mA, voltage of 10 kV and 20 to 60 s. .
Příklad 1Example 1
Na zuštachtený povrch materiálu s vysokým obsahom OH skupin sa pósobí korónovým výbojom v inonizačnom zariadení pri intenzitě el. prúdu 10 mA a napatí 10 ,kV v parách anhydridu karboxylovej kyseliny počas 20 s.A corona discharge is applied to the sealed surface of the material with a high OH group content in an inonization apparatus at an electron intensity. current of 10 mA and voltage of 10 kV in carboxylic acid anhydride vapor for 20 s.
Vzorka sa volné uloží na povrch anody ionizačného zariadenia, kým katoda je tvořená wolframovým drótom o poloměre 0,1 milimetrov pri medzielektródovej vzdialenosti 1 cm.The sample is loosely deposited on the anode surface of the ionization device while the cathode is formed by a tungsten wire of 0.1 millimeter radius at an inter-electrode distance of 1 cm.
Atmosféra nasýtených pár anhydridu karboxylovej kyseliny sa připraví po predbežnom evakuovaní aparatúry na cca 1 Pa.The atmosphere of saturated carboxylic acid anhydride vapors is prepared after preliminary evacuation of the apparatus to about 1 Pa.
Příklad 2Example 2
Povrch zuštachteného materiálu s vysokým obsahom hydroxylových skupin je vystavený posobeniu koronového výboja v ionizačnom zariadení pri intenzitě el. prúdu 15 ml a napatí 10 kV, pri době opracovania v korónovom výboji v parách anhydridu karboxylovej kyseliny počas 40 s.The surface of the sealed material with a high content of hydroxyl groups is subjected to corona discharge in an ionizing device at an electron intensity. with a current of 15 ml and a voltage of 10 kV, at the time of corona treatment in carboxylic anhydride vapor for 40 s.
Dalej sa postupuje ako v příklade 1.The procedure is as in Example 1.
Příklad 3Example 3
Na zuštachtený povrch materiálu s vysokým obsahom hydroxylových skupin sa působí koránovým nábojom v ionizačnom zariadení pri intenzitě el. prúdu 20 mA a napatí 10 kV v parách anhydridu karboxylovej kyseliny počas 60 s.The sealed surface of the high hydroxyl group-containing material is treated with a koranic charge in an ionizing device at an electric intensity. current of 20 mA and a voltage of 10 kV in carboxylic acid anhydride vapor for 60 s.
Ďalej sa postupuje ako v přiklade 1 a 2.The procedure is as in Examples 1 and 2.
Pósobením koronového výboja dochádza ku vzniku aktívnych častíc na povrchu zuštachteného materiálu (jednoduché záporné ióny, volné elektrony, vibračně a elektrónovo vzbudené molekuly, radikály), interakciou ktorých s molekulami anhydridu karboxylovej kyseliny sa dosahuje nový a vyšší účinok vo formě zvýšenej odolnosti voči pósobeniu vody.Corona discharge produces active particles on the surface of the treated material (simple negative ions, free electrons, vibrational and electron-excited molecules, radicals), which interact with new carboxylic acid anhydride molecules to achieve a new and enhanced effect in the form of increased water resistance.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS839703A CS239174B1 (en) | 1983-12-21 | 1983-12-21 | Method of painted materials surfaces treatment with high content of hydroxyl groups in corona discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS839703A CS239174B1 (en) | 1983-12-21 | 1983-12-21 | Method of painted materials surfaces treatment with high content of hydroxyl groups in corona discharge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS970383A1 CS970383A1 (en) | 1985-05-15 |
| CS239174B1 true CS239174B1 (en) | 1985-12-16 |
Family
ID=5446135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS839703A CS239174B1 (en) | 1983-12-21 | 1983-12-21 | Method of painted materials surfaces treatment with high content of hydroxyl groups in corona discharge |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS239174B1 (en) |
-
1983
- 1983-12-21 CS CS839703A patent/CS239174B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS970383A1 (en) | 1985-05-15 |
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