|
Example 1. MEKO-end-capped PU Coating
1) Preparation of MEKO-end-capped PU prepolymer solution
Formulation:
|
|
Parts(w/w) |
| a. |
α,α,α',α'-Tetramethyl Xylylene Diisocyanate |
259 |
| b. |
Carbitol Acetate |
400 |
| c. |
Trimethylolpropane |
28 |
| d. |
Polybutanol |
212 |
| e. |
Dibutyltin Dilaurate |
0.1 |
| f. |
MEKO |
101 |
Add ingredients a,b, c,d and e into a reactor fitted with a stirrer, heater, thermometer and gas inlet. Heat to 80～100°C while stirring under nitrogen and keep for 3hr to allow max. PU prepolymer yield, that is NCO% reaches 8.9﹪. Add MEKO (ingredient f) into the solution and react at 60～80°C for 3hr until NCO peaks disappear by IR detection. Thus MEKO end-capped PU prepolymer solution, with 60% of solid content, is obtained.
2) Preparation of the coating
Formulation:
| |
MEKO end-capped PU prepolymer solution |
100 |
| h. |
Carbon Black |
1 |
| i. |
Titanium Dioxide |
5 |
| j. |
Calcium Carbonate |
80 |
| k. |
Aromatic Naphtha (bp. 100～200°C) |
30 |
Place the above ingredients in a mixer, and mix thoroughly to achieve a uniform suspension.
Characteristics and Use:
• High adhesion, impact resistance and storage stability.
• Suitable for galvanized steel surface, automotive, etc.
• Recommended to apply by air spray; bake at 120°C for 15min; film thickness 20μm. It can also be applied by brush, roller, blade and E-coating.
Example 2. Waterborne Exterior Coating
Formulation:
| Water |
8.33 |
| Soy Lecithin Emulsion (Centromix LP-1421) |
9.0 |
| Linaqua |
8.10 |
| Titanium Dioxide |
34.99 |
| Al powder or Zinc Oxide 427W |
46.7 |
| Linseed Oil |
22.46 |
| Talc |
23.75 |
| Phenyl Alkylsulfonate |
21.65 |
| Water |
8.33 |
| Linaqua |
8.10 |
| SynvarexlA-5-97 |
7.7 |
| 6﹪ Cobalt Caprylate |
7.4 |
| 6﹪ Magnesium Naphthenate |
7.97 |
| 24﹪ Cobalt Naphthenate |
9.7 |
| 8﹪ Zinc Naphthenate |
8.00 |
| MEKO |
7.65 |
| Water |
8.33 |
Disperse Centromix LP-1421 in water. Add Linaqua slowly while stirring. Then add the next 5 ingredients in sequence as listed above. Mill the resulting solution to 4 Hegman (50.00 um). Add the remaining ingredients in sequence and stir thoroughly.
Characteristics and Use:
• Exterior masonry coating with glaze finish.
• Excellent weather resistance.
Example 3. Solventborne Interior Coatng
Formulation 1: Low-gloss white alkyd coating
| Titanium Dioxide OR-540 |
34.15 |
| Calcium Carbonate |
22.57 |
| Zinc Oxide (Kaclox 515) |
46.70 |
| 5﹪ Calcium Naphthenate |
7.90 |
| Beckosol P-470-60 Alkyd Resin |
7.73 |
| Solvent Oil (bp. 150～200°C) |
6.53 |
| Levelling Agent |
7.15 |
| Solvent Oil (bp. 150～200°C) |
6.52 |
| 6﹪ Colbalt Naphthenate |
8.16 |
| MEKO |
7.65 |
Place the first 6 ingredients in a colloid mill and reduce the particle size to 6 Hegman (25.00um). Add the remaining ingredients in sequence while stirring and mix thoroughly.
Characteristics and Use:
• Interior wood and concrete coating.
• High wear resistance.
Formulation 2: White glossy lacquer
| Titanium Dioxide R-750 |
34.15 |
| Zinc Oxide Kadox515 |
46.70 |
| 4﹪ Calcium Naphthenate |
7.85 |
| Thixcin |
8.51 |
| Backosol P-470-70 Alkyd Resin |
7.86 |
| Solvent Oil (bp. 150～200°C) |
6.52 |
| Backosol P-470-70 Alkyd Resin |
7.86 |
| Solvent Oil |
6.52 |
| 6﹪ Colbalt Naphthenate |
7.95 |
| Violet Dispersing Agent |
8.50 |
| MEKO |
7.65 |
Place the first 6 ingredients in a colloid mill and reduce the particle size to 6 Hegman (25.00um). Add the remaining ingredients in sequence while stirring and mix thoroughly.
Characteristics and Use:
• Hard surface coating.
• High wear and aging resistance.
Example 4. White Chlorinated Rubber/Alkyd Lacquer
Formulation:
| |
I |
II |
|
|
Parts (w/w) |
Parts (w/w) |
|
5～20mpa.S Chlorinated Rubber
Medium-oil Soy Alkyd (70%)
Long-oil Linseed Alkyd (70﹪)
Titanium Dioxide (Rutile)
Cobalt Naphthenate
Lead Naphthenate
MEKO
Petroleum Solvent
Aromatic Solvent |
8.5
30.4
18.4
0. 2
0. 4
0. 1
8.0
34.0 |
8.9
27.0
19.40
0. 2
0. 4
0. 1
11.0
33.0 |
| Total |
100 |
100 |
Example 5. Chlorinated Rubber Road Paint
Formulation:
|
|
I |
II |
III |
|
|
Parts (w/w) |
Parts (w/w) |
Parts (w/w) |
|
20mpa.s Chlorinated Rubber
Long-oil Alkyd (60﹪)
Chlorinated Paraffin (70﹪)
Chlorinated Paraffin (42﹪)
Titanium Dioxide (Rutile)
Zinc Oxide
Blanc Fix
Talc
Calcium Carbonate Heavy
Modified Bentonite
Epichlorohydrin
Cobalt Naphthenate
Lead Naphthenate
Butanone
Toluene
Ethyl Acetate
MEKO |
8.6
6.6
-
6.4
17.1
4.3
-
12.0
10.8
0. 5
0. 3
0.1
0.2
29.8
-
3.0
0.3 |
6.1
16.5
-
-
17.6
-
14.0
14.1
-
0.5
0.2
0.2
0.4
-
30.1
-
0.3 |
6.5
14.0
-
-
9.6
-
19.2
9.6
9.6
0.5
0.5
0.1
0.2
-
20.7
-
0.3 |
| Total |
100 |
100 |
100 |
Example 6. Alkyd Lacquer
Formulation (parts w/w):
| |
Black |
Red |
Green |
Light Grey |
Sky Blue |
White |
|
Alkyd (50%)
Carbon Black (Hard)
Titanium Dioxide (Rutile)
Lemon Yellow
Iron Blue
Carbon Black (Soft)
Toluidine Red
French Blue
Medium Chrome Yellow
Lead Oxide
Lead Naphthenate (12%)
Cobalt Naphthenate (3%)
Manganese Naphthenate (3%)
Zinc Naphthenate (3%)
Calcium Naphthenate (2%)
Silicone Oil (1%)
MEKO(50%)
Xylene |
88.3
2.00
—
-
-
-
-
-
-
0.08
1.20
1.2
0.60
0.78
0.85
-
0.41
|
79.8
-
-
-
-
-
8.00
-
-
0.1
1.5
0.30
0.60
0.80
0.90
-
0.41
|
72.3
-
-
11.40
2.40
-
-
-
1.9
0.07
1.40
0.40
0.40
1.10
0.82
0.40
0.41
|
70.00
-
19.20
0.39
0.20
0.25
-
-
-
0.07
2.00
0.20
0.80
0.94
1.24
0.40
0.41
|
70.25
-
18.80
-
1.20
-
-
-
-
0.06
2.00
0.60
0.60
0.80
1.20
0.40
0.41
|
66.40
-
25.40
-
-
-
-
0.18
-
0.07
2.00
0.80
0.20
0.80
1.20
-
0.41
|
| PVC, % |
2.69 |
12.4 |
9.2 |
15.9 |
14.4 |
16.4 | | 
