Evonik Degussa B1358A closed IPDI curing agent
Product Description
|
Product name |
Blocked Cycloaliphatic Polyisocyanates |
|
grade |
B1358A |
|
supplier |
Evonik Degussa |
|
solvent |
SOLVESSO 100* |
Specification
|
nature |
Numerical value |
unit |
testing method |
|
solid content |
63±1 |
weight% |
DIN EN ISO 3251 (15h, 110℃, <2hPa) |
|
Viscosity@23℃ |
5.5±1 |
Pa·s |
DIN EN ISO 3219 |
Typical data
|
Free NCO content |
<0.1 |
weight% |
DIN EN ISO 11909(revised) |
|
NCO content |
about 8 |
weight% |
- |
|
Decapsulation temperature |
130 |
℃ |
DIN/ISO 6217 |
|
Color value (APHA) |
≤150 |
- |
DIN 53213 ISO 1516 |
|
Flash point (closed cup) |
47 |
℃ |
- |
|
Vapor pressure@20℃ |
<10 |
hPa |
- |
*SOLVESSO 100: C9/C10 mixed aromatics, boiling range 154-178℃
application
VESTANAT B 1358A is a blocked cycloaliphatic polyisocyanate which can be combined with suitable hydroxyl resins such as polyester, acrylic and alkyd resins. VESTANAT B 1358A can be considered as a resin with excellent light and weather resistance. In particular, it provides an excellent balance of reactivity and storage stability for formulated paints.
Typical application areas
･ Combined with saturated polyester DYNAPOL LH series for can outer coating (varnish, printing, ink, primer), it can get very good adhesion, color stability and resistance to retort and sterilization
· External Coil Coatings
· Strong acid-resistant car original paint
· Car anti-stone hit coating / topcoat
Theoretically, B 1358A can be used in all polyurethane stoving varnishes with baking temperature ≤130℃, we recommend using tin as catalyst, such as butyl tin dilaurate (DBTDL). The dosage is generally 0.1-0.5% of the resin weight.
The properties of the cured coating depend on the polyol used.
For special requirements (eg different solvents), B 1358A can also be supplied in a solvent-free form (VESTANAT B 1358/100).
Curing condition table
The following curing tests were performed with 0.8mm thick aluminum panels placed in an air circulating oven. The temperatures listed in the table refer to the temperature of the circulating air in the furnace.
Table 1: Curing conditions for one-component polyurethane systems
|
system |
Drying time (min)/baking temperature (℃) |
||||
|
With 0.5% DBTDL, calculated by resin) |
130℃ |
140℃ |
150℃ |
160℃ |
180℃ |
|
VESTANAT B 1358A/Polyester (2.5-4% OH) |
55 |
35 |
15 |
10 |
5 |
|
VESTANAT B 1358A/Acrylic Polyol (2.5-4% OH) |
25 |
15 |
10 |
8 |
4 |
storage and transportation
VESTANAT B 1358A can be stored in an airtight container for at least one year;
VESTANAT B 1358A is available in disposable drums with a net weight of 200kg.
Safety and Handling
Please consult the product's MSDS.
