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Then crosslinking agents and DBTL catalyst were added into the solution.
Polyurethane polymer based on 2,4-toluenediisocyanate (TDI), poly(propylene glycol) (PPG), and butanediol (BD) were prepared with butanediol as chain extender, dimethylformamide (DMF) as solvent, and dibutyltin dilaurate (DBTL) as initiator [31, 32].
Variable Sample PPG (g) TDI (g) BES (g) DMSO (g) DBTL (g) BES/DMSO A1 50 0 0 2 A2 18.3 3.4 7.8 A3 6.7 15.7 A4 10.1 23.5 PPG/TDI B5 50 9.1 6.7 15.7 2 B6 18.3 B7 27.4 CERT C9 50 18.3 6.7 15.7 2 C8 C10 Variable Sample Surfactant (g) Water (g) CERT (min) BES/DMSO A1 0.25 6 40 A2 A3 A4 PPG/TDI B5 0.25 6 40 B6 B7 CERT C9 0.25 6 60 C8 40 C10 90 TABLE 2: Retention times of foam samples.
DBTL has already been implemented and has been running successfully in 54 Districts of India and that the old system of subsidy as was subsisting before DBTL has been stopped.
Chairing a review meeting on DBTL scheme here today, Dr.
Examples of a solvent-based 2K PU clearcoat with the new products were compared to DBTL. They exhibited similar pot lives and higher reactivity than DBTL.
Figure 7 shows cure traces for the cure of a hydroxyl terminated polyester (Diorez 520) with a trifunctional polymeric MDI (Hyperlast isocyanate 2975/000), in the presence of DBTL at different NCO indices: 0.9, 1.0 and 1.1.
N-heptane, ethanol, isopropyl alcohol, and dibutyltin dilaurate (DBTL) (Beijing Jingyi Chemical Reagents Corp., China) were used without further purification.
With the implementation of the PAHAL Scheme ( DBTL), the subsidy is being trans- ferred directly to the bank accounts of 14.78 crore LPG consumers.
Tumkur (Bangalore), June 1 ( ANI ): In line with the government's decision to launch Direct Benefit Transfer for LPG (DBTL) scheme in 20 high dhr coverage districts from June 1, Union Petroleum and Natural Gas Minister Dr.
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- DBUF Transmit FIFO Overflow