Polyurethane resins for nitrocellulose inks
A polyurethane resin, nitrocellulose technology, applied in inks, cellulose plastic material layered products, synthetic resin layered products, etc., can solve the problems of migration, compatibility, solubility and low lamination bond strength. , to achieve the effect of excellent extrusion bond strength, good resolubility, and good lamination bond strength
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0122] 11.61% Lupranate MI, and 34.52% Pluriol P 1000 was reacted at 68-72°C in a nitrogen stream for 2 hours until NCO% reached 1.46, of which 0.02% BiCAT TM 8 was used as catalyst and 30.21% ethyl acetate was used as solvent. The reaction would yield an isocyanate terminated prepolymer at 53.80% solids.
[0123] The prepolymer was chain extended by adding various amounts of 1,4-butanediol. Viscosity was monitored during chain extension. When the viscosity at 25° C. reaches 20,000˜30,000 mPa·s, the addition of 1,4-butanediol is stopped, and 22.6% ethanol is added to form the final polyurethane solution.
[0124] The final polyurethane solution had a viscosity of 1600 mPa·s at 25°C, a solids content of 46.8%, and a Gardner color of less than 2.
Embodiment 2
[0126] 8.52% Lupranate MI, 8.53% Poly THF 2000, 25.59% Pluriol React P2000 at 68~72℃ for 2 hours in a nitrogen stream until the NCO% reaches 2.63, with 0.02% BiCAT TM 8 was used as catalyst and 11.68% ethyl acetate was used as solvent. The reaction yielded an isocyanate terminated prepolymer at 78.5% solids.
[0127] To the above prepolymer solution was added at a controlled rate 2.15% isophoronediamine and 0.42% 1-amino-2-propanol in 35.05% ethanol and 8.03% ethyl acetate to prepare Final polyurethane resin solution.
[0128] The final polyurethane solution had a viscosity of 1390 mPa·s at 25°C, a solids content of 47.47%, and a Gardner color of less than 2.
[0129] Compare the resin of resin embodiment 1 and 2 of the present invention with commercially available polyurethane resin Versamid PUR 1132, NeoRez U-395 and NeoRez Performance of U-397.
Embodiment 1～6
[0131] Table 1. NC-based pigment dispersant formula
[0132]
blue
White
NC matrix
％
％
A-400 (70% solid content)
9.38
14.00
Toyo Blue 15:4
26.25
RDE2 / TR5250 / 50
49.00
1-PrOH / PrAc 80 / 20
64.37
37.00
Total
100.00
100.00
Steel shot (steel shot) (2mm)
200.00
200.00
Total
300.00
300.00
[0133] Table 2. Ink formulations
[0134] Ink formula
blue
White
NC matrix
50.0
43.5
Polyurethane resin
28.0
36.0
IA 10
3.0
3.0
1-PrOH / PrAc 80 / 20
19.0
17.5
Total
100.0
100.0
Glass beads, 4 mm
30.0
30.0
[0135] Table 3. Properties of white ink on BOPP film
[0136]
[0137] Table 4. Performance of blue ink on BOPP film
[0138]
[0139] Table 5. Performance of white overblue ink on BOPP film
[0140]
[0141] T...
PUM
| Property | Measurement | Unit |
|---|---|---|
| number average molecular weight | aaaaa | aaaaa |
| viscosity | aaaaa | aaaaa |
| viscosity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More