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433497

Sigma-Aldrich

Poly(propylene glycol), tolylene 2,4-diisocyanate terminated

average Mn ~2,300 (narrow MW distribution), isocyanate ~3.6 wt. %

Synonym(s):

Polypropylene glycol-toluene diisocyanate copolymer, Tolylene diisocyanate-polypropylene glycol polymer

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About This Item

CAS Number:
MDL number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23

form

viscous liquid

Quality Level

mol wt

average Mn ~2,300 (narrow MW distribution)
degree of polymerization ~34

composition

isocyanate, ~3.6 wt. %

hardness

80 (Shore A, reacted with MOCA)

impurities

<0.1% residual TDI

refractive index

n20/D 1.4742

viscosity

≤1,700 cP(40 °C)(lit.)

density

1.05 g/mL at 25 °C

SMILES string

CC(O)CO.Cc1ccc(cc1N=C=O)N=C=O

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Application

Idler rollers and adhesive-handling pads.

Features and Benefits

Lower viscosity than conventional polyurethane oligomers. Aromatic isocyanate is more reactive than aliphatic isocyanate. Aromatic isocyanates are less light stable than aliphatic isocyanates.

Physical form

Polyurethane prepolymer.

Pictograms

Health hazardExclamation mark

signalword

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

target_organs

Respiratory system

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

235.4 °F - closed cup

flash_point_c

113 °C - closed cup


Certificates of Analysis (COA)

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[Excretory insufficiency of the pancreas after occlusion of the ductal system with glue].
V S Zemskov et al.
Vestnik khirurgii imeni I. I. Grekova, 138(3), 73-74 (1987-03-01)
[Plombage of pathological pleural cavities].
V Ia Dzhugostran
Grudnaia khirurgiia (Moscow, Russia), (5)(5), 58-60 (1987-09-01)
E A Stepanov et al.
Grudnaia i serdechno-sosudistaia khirurgiia, (1)(1), 52-55 (1990-01-01)
The authors discuss experience in 168 operations for extirpation and segmental resection of affected bronchi in children with bronchiectases. To prevent recanalization of the bronchus after its segmental resection and to prevent the formation of an abscess in the isolated
I V Titarenko et al.
Vestnik khirurgii imeni I. I. Grekova, 152(3-4), 17-23 (1994-03-01)
Results of experimental investigations of using polymer compositions KL-3, including modifications with ionol ("Adgenol") and levamisol in 18 rabbits with injuries of the liver are presented. It has been established that 3 and 6 months after using the mentioned compositions
[The use of the polyurethane adhesive compound KL-3 for treating varicosities of the surface veins].
Iu M Polous et al.
Klinichna khirurhiia, (7)(7), 26-27 (1996-01-01)

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