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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:
9057-91-4
MDL number:
MFCD00217728
UNSPSC Code:
12162002
PubChem Substance ID:
24867145
NACRES:
NA.23

form

viscous liquid

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
GHS08,GHS07

Signal Word

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 Code

10 - Combustible liquids

WGK

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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[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
[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)
[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)
[Use of medical glues MK-6 and KL-3 in surgical endocrinology].
I V Komissarenko et al.
Klinicheskaia khirurgiia, (12)(12), 19-20 (1985-01-01)
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