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446084

Sigma-Aldrich

Polyurethane diol solution

average Mn ~320, 88 wt. % in H2O

Synonym(s):

PU Diol Concentrate

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About This Item

MDL number:
MFCD00241502
UNSPSC Code:
12162002
NACRES:
NA.23

form

liquid

mol wt

average Mn ~320

composition

urethane, 37%

concentration

88 wt. % in H2O

refractive index

n20/D 1.47

viscosity

8,000 cP(25 °C)(lit.)

acid number

0.6 mg KOH/g(dry basis)

hydroxyl value

350 mg KOH/g(dry basis)

solubility

H2O: soluble

density

1.14 g/mL at 25 °C

General description

Polyurethane diol solution (PUD) is a synthetic polymeric solution that is used as a modifier that is formed by condensation of isocyanates and polyalcohols. It modifies water soluble resins and emulsions which can be used in automotive coating applications.

Application

Modifier for water-soluble resins and emulsions in wood, appliance and auto coatings.
PUD may be used to control the cohesion of silver (Ag) inks which can be printed to form transparent conducting electrodes. These printed electrodes can be used in the fabrication of organic solar cells (OSCs). It may also be used as an electrolyte for dye sensitized solar cells (DSSCs).

Features and Benefits

Hydrolytically stable, improves flow and leveling and gives high film hardness.

Physical form

Dihydroxy-functional oligomer. Aliphatic urethane of proprietary composition

Other Notes

This product contains both primary and secondary hydroxyl functionality.

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Roll-offset printed transparent conducting electrode for organic solar cells.
Kim I, et al.
Thin Solid Films, 580(2), 21-28 (2015)
High efficient plastic solar cells fabricated with a high-throughput gravure printing method.
Kopola P, et al.
Solar Energy Materials and Solar Cells, 94(10), 1673-1680 (2010)
Effects of Sodium Iodide (NaI) on Electro-Conductivity with Polyurethane-Diol Organic Electrolyte for Dye-Sensitized Solar Cell (DSSC).
Solid State Phenomena, 268(10), 358-362 (2017)
Isolation of a Pseudomonas aeruginosa strain from soil that can degrade polyurethane diol.
Mukherjee K, et al.
Biodegradation, 22(2), 377-388 (2011)

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