Reaction #324367

ord-265729087b3b4af0b137e6e51302343a

Reaction equation

CC(=O)CC(C)=O
2,4-pentanedione
CC(CO)(CO)CO
trimethylolethane
CN(C)C(C)(C)CO
DMAMP
CCC(C)(C)O
tertiary amyl alcohol
CC(=O)CC(C)(C)O
diacetone alcohol
→
CC(CO)(CO)CO
trimethylolethane
OCCN(CCO)CCO
triethanolamine

Reactants

—
Pluronic L-62
CC(=O)CC(C)=O
2,4-pentanedione
CC(CO)(CO)CO
trimethylolethane
CN(C)C(C)(C)CO
DMAMP
CCC(C)(C)O
tertiary amyl alcohol
CC(=O)CC(C)(C)O
diacetone alcohol
—
polyurethane
—
polyurethane

Reagents

[Sn]
tin

Solvents

O
water
CCC(C)=O
methylethylketone
CN1CCCC1=O
N-methyl pyrrolidone

Conditions

Temperature
60°CELSIUS
Detailed conditions
See reaction.notes.procedure_details.

Workup

  1. 1
    workup.ADDITIONare mixed together
  2. 2
    Otherreacted for 6 hours in a nitrogen atmosphere
  3. 3
    Otherthe reaction

Procedure

22.4 g DP9C/012, 3.9 g Poly G 83-34, 1.0 g Pluronic L-62, 0.4 g trimethylolethane, 2.0 g Cirrasol G-265, 1.0 g DMAMP DBS, and 0.11 g tin catalyst are added to 2.6 g N-methyl pyrrolidone plus 4.7 g methylethylketone, 2.8 g tertiary amyl alcohol, 0.6 g 2,4-pentanedione and 4.0 g diacetone alcohol and are mixed together. The mixture is heated to 60° C. and then reacted for 6 hours in a nitrogen atmosphere. Following the reaction, the resulting polyurethane prepolymer mixture is cooled and then dispersed in 59.0 g of distilled water, 0.1 g trimethylolethane, and 0.2 g triethanolamine with a high shear disperser, resulting in a stable aqueous polyurethane dispersion having about 24% solids by weight of the dispersion. The resulting polyurethane comprises about 3% polyethylene oxide side chains by weight of the solids of the polyurethane, about 12% polyethylene oxide main chains by weight of the solids of the polyurethane, and about 48% blocked polyisocyanates by weight of the solids of the polyurethane.

Source

DOI: 10.6084/m9.figshare.5104873.v1Patent: US08642180B2uspto-grants-2014_02