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| Highly reactive polymer : EPOCROS (Oxazoline-functional polymer) |
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Epocros has been introduced to the market by Nippon Shokubai as world's first commercialization of Oxazoline related product built on the basic technique of Dow Chemical Company USA as well as the accumulated knowledge of Nippon Shokubai on synthetic organic chemistry and polymer science.
Recentry, worldwide expectation for developing enviromentally safe product is becoming prevalent and the trend is being accelerated toward the woterborne product against VOC and solvent. With those background, Epocros is accepted and utilezed by variety of customers.
Especialy, as Epocros is realized on polymer structure which is quite rare for the crosslinkers, the market is recognizing it as a crosslinker with extremely high safety. |
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| The product(s) listed in this brochure (PRODUCT) is manufactured and sold under a license from THE DOW CHEMICAL COMPANY (U.S.A.). PRODUCT is subject to U.S. Export Administration Regulations and is classified as EAR99 thereunder. Please ensure compliance with appolicable U.S. export control laws and regulations as a license issued by the U.S. government may be required prior to exporting or selling PRODUCT to certain countries, areas, organizations or individuals as designated by the U.S. Govemment. |
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| ( Further details regarding U.S. export control may be obtained at web sites of various U.S. government departments including : http://www.bis.doc.gov/index.htm) |
Application areas of EPOCROS |
General Information of EPOCROS |
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| Classification of EPOCROS |
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Product line-up,properties and characteristics |
| Product Type |
Emulsion |
Water soluble |
| Series name |
K-2000 Series |
WS series |
| Product No. |
K-2010E |
K-2020E |
K-2030E |
WS-300 |
WS-500 |
WS-700 |
| Appearance |
Milky white emulsion |
None~Clear Red Liquid |
Clear yellow liquid |
| Type |
Soft |
Middle |
Hard |
High oxazoline VOC free |
Standard |
VOC free |
| Nonvolatiles(wt%) |
40 |
10 |
39 |
25 |
| Solvent |
Water |
Water |
Water/PM*7 |
Water |
| pH |
7-9 |
7-10 |
8-10 |
7-10 |
| Main components |
Styrene/Acrylic |
Acrylic |
| WPO*1 |
550 |
130 |
220 |
| Oxazoline value*2 |
1.8 |
7.7 |
4.5 |
| Tg(ºC) |
-50*3 |
0*3 |
50*3 |
90*3 |
50*4 |
50*4 |
Molecular
Weight*5 |
Mn |
N/A*6 |
4×104 |
2×104 |
2×104 |
| Mw |
N/A*6 |
12×104 |
7×104 |
4×104 |
Common
characteristics |
- VOC free, Long Pot life for one packaging
- Controllable appearance by Tg adjustment
- Improve water resistance, heat resistance and film properties
- Adhesion promoting particularly to polyester
- Fast drying
- Low-toxicity
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- VOC free, Long Pot life for one packaging
- Higher reactivity in comparison with emulsion type
- Improve water resistance, heat resistance and film properties
- Adhesion promoting for PET, OPP, PVC etc.
- Fast drying
- Low-toxicity
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Figures shown in the above table are representative values;these are not to be considered product specification
(1) Equivalent Weight (Weight per oxazoline equivalent : norvolatiles g/eq.) :Theoretical value
(2) Oxazoline value (mmol/norvolatiles) :Theoretical value
(3) Calculated value
(4) Actual measurement
(5) Molecular weight (HPLC,g/mol)
(6) N/A:not available
(7) 1-Methoxy-2-propanol
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Reactivity of the Oxazoline groups |
| Reaction with the carboxyl groups |
| 1. |
Reaction with carboxyl groups which is contained in most of waterborne polymers is regarded to have the highest reactivity. |
| 2. |
After the reaction with the carboxyl groups, stable amid ester bonding is formed. Any by-product will not be generated. |
| 3. |
Reaction with carboxyl groups proceeds rapidly at elevated temperature 80ºC to 100ºC. |
| 4. |
Reaction with carboxyl groups proceeds slowly at room temperature. |
| 5. |
Oxazoline groups have better reactivity with carboxyl groups than with epoxy groups. |
| 6. |
Oxazoline groups also react with aromatics such as thiol groups as well as phenol groups. but oxazoline groups cannot react with alcoholic hydroxyl groups. |
| Model reaction of Oxazoline groups (Ethyl Oxazoline / Propionic acid) |
Conditions on Reactivity:Etyhl oxazoline / Propionic acid = 1/1(mol/mol),solvent-free reaction
Phenyl glycidyl ether / Propionic acid = 1/1(mol/mol),solvent-free reaction
Method of analysis:Gas chromatography analysis |
EPOCROS is a low toxic and highly safe crosslinker. |
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Ames test |
Skin temporary irritant test
(Rabbit) |
Acute toxicity
(Oeal,Rat,LD50) |
Fish toxicity
(Killfish,LC50,96hr) |
| K-2010E |
Negative |
None |
>2000mg/kg |
>1000mg/L |
| K-2020E |
Negative |
None |
>2000mg/kg |
>1000mg/L |
| K-2030E |
Negative |
None |
>2000mg/kg |
>1000mg/L |
| WS-300 |
Negative |
Slight irritation
Pll=0.2 |
>2000mg/kg |
N/A |
| WS-500 |
Negative |
None |
>2000mg/kg |
>1000mg/L |
| WS-700 |
Negative |
None |
>2000mg/kg |
>1000mg/L |
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Law concerning
the Examination
and Regulation of
Manufacture,etc.
of Chemical
substances
(Japan) |
TSCA
(USA) |
ELINCS
(EU) |
Toxic Chemical
Control Act
(Korea) |
Inventory of
the Existing Chemical
Substances in China;
IECSC
(China) |
| K-2010E |
R |
R |
R |
N/R |
N/R |
| K-2020E |
R |
R |
R |
R |
N/R |
| K-2030E |
R |
R |
R |
R |
N/R |
| WS-300 |
R |
R |
N/R |
N/R |
N/R |
| WS-500 |
R |
R |
R |
R |
R |
| WS-700 |
R |
R |
R |
R |
R |
R:Registered
N/R:Not registered |
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