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Two-Component Polyurethane Sealant

Common Product
MasterFormat 07 92 00 Joint Sealants

This information reflects our best understanding of product composition in 2022.

Two-component polyurethane sealants are comprised of Part A and Part B components mixed just prior to application. As with single-component PU sealants, two-component systems rely on a reaction between polyols and isocayantes. Unlike single-...

More about Two-Component Polyurethane Sealant

Two-component polyurethane sealants are comprised of Part A and Part B components mixed just prior to application. As with single-component PU sealants, two-component systems rely on a reaction between polyols and isocayantes. Unlike single-component polyurethane sealants, two-component systems do not require moisture to cure and therefore cure more quickly and may be used in sealing deeper joints. The polyol portion is typically found in Part A and the isocyanates in Part B. Additional additives include fillers, plasticizers, solvents, moisture scavengers, catalysts, stabilizers, and adhesion promotors. These sealants can be used in interior or exterior joint sealing applications such as expansion and control joints, siding gaps, gaps around perimeters of doors and windows, and other wall penetrations. They are commonly paintable and meet ASTM C920 Type M, Grade NS with a typical joint movement capability of +/-50%. Some manufactuers offer an additional accelerator component (Part C) to increase the rate of cure in cold weather applications. Part C is not covered by this CP.

Name % Weight Whole Function GS Score Sources
Polytetramethylene glycol
25190-06-1
29.48% Polyol Subscribe to view
DIISODECYL PHTHALATE (DIDP) (alternate CASRN is 68515-49-1)
26761-40-0
19.12% Plasticizer Subscribe to view
Calcium carbonate
471-34-1
15.03% Filler Subscribe to view
Polypropylene glycol
25322-69-4
3.76% Polyol Subscribe to view
Titanium dioxide
13463-67-7
2.00% Pigment Subscribe to view
Xylenes
1330-20-7
1.76% Solvent Subscribe to view
Lime
1305-78-8
1.01% Moisture scavenger Subscribe to view
Dibutyltin dilaurate
77-58-7
0.65% Catalyst Subscribe to view
Silicon dioxide
7631-86-9
0.50% Filler Subscribe to view
2-(2H-Benzotriazol-2-yl)-4,6-di-tert-pentylphenol
25973-55-1
0.50% UV Stabilizer Subscribe to view
gamma-Glycidoxypropyltrimethoxysilane
2530-83-8
0.32% Adhesion promoter Subscribe to view
Stearic acid
57-11-4
0.32% Dispersant Subscribe to view
Ethylbenzene
100-41-4
0.28% Solvent Subscribe to view
Quartz
14808-60-7
0.28% Residual Subscribe to view
POLYMERIC TDI
9017-01-0
20.02% Polymer Subscribe to view
DIISODECYL PHTHALATE (DIDP) (alternate CASRN is 68515-49-1)
26761-40-0
2.82% Plasticizer Subscribe to view
Aquafil
112945-52-5
1.45% Filler Subscribe to view
Toluene 2,4-diisocyanate
584-84-9
0.54% Monomer Subscribe to view
2,6-TOLUENE DIISOCYANATE (2,6 TDI)
91-08-7
0.18% Monomer Subscribe to view
Name % Weight Part % Weight Whole Function GS Score Sources
Part A (two-component polyurethane sealant)
75.00% 75.00% Polyol Part A Subscribe to view
Polytetramethylene glycol
25190-06-1
(Nested within Part A (two-component polyurethane sealant))
39.30% 29.48% Polyol Subscribe to view
DIISODECYL PHTHALATE (DIDP) (alternate CASRN is 68515-49-1)
26761-40-0
(Nested within Part A (two-component polyurethane sealant))
25.49% 19.12% Plasticizer Subscribe to view
Calcium carbonate
471-34-1
(Nested within Part A (two-component polyurethane sealant))
20.04% 15.03% Filler Subscribe to view
Polypropylene glycol
25322-69-4
(Nested within Part A (two-component polyurethane sealant))
5.01% 3.76% Polyol Subscribe to view
Titanium dioxide
13463-67-7
(Nested within Part A (two-component polyurethane sealant))
2.67% 2.00% Pigment Subscribe to view
Xylenes
1330-20-7
(Nested within Part A (two-component polyurethane sealant))
2.34% 1.76% Solvent Subscribe to view
Lime
1305-78-8
(Nested within Part A (two-component polyurethane sealant))
1.34% 1.01% Moisture scavenger Subscribe to view
Dibutyltin dilaurate
77-58-7
(Nested within Part A (two-component polyurethane sealant))
0.87% 0.65% Catalyst Subscribe to view
Silicon dioxide
7631-86-9
(Nested within Part A (two-component polyurethane sealant))
0.67% 0.50% Filler Subscribe to view
2-(2H-Benzotriazol-2-yl)-4,6-di-tert-pentylphenol
25973-55-1
(Nested within Part A (two-component polyurethane sealant))
0.67% 0.50% UV Stabilizer Subscribe to view
gamma-Glycidoxypropyltrimethoxysilane
2530-83-8
(Nested within Part A (two-component polyurethane sealant))
0.43% 0.32% Adhesion promoter Subscribe to view
Stearic acid
57-11-4
(Nested within Part A (two-component polyurethane sealant))
0.43% 0.32% Dispersant Subscribe to view
Ethylbenzene
100-41-4
(Nested within Part A (two-component polyurethane sealant))
0.37% 0.28% Solvent Subscribe to view
Quartz
14808-60-7
(Nested within Part A (two-component polyurethane sealant))
0.37% 0.28% Residual Subscribe to view
Part B (two-component polyurethane sealant)
25.00% 25.00% Isocyanate Part B Subscribe to view
POLYMERIC TDI
9017-01-0
(Nested within Part B (two-component polyurethane sealant))
80.09% 20.02% Polymer Subscribe to view
DIISODECYL PHTHALATE (DIDP) (alternate CASRN is 68515-49-1)
26761-40-0
(Nested within Part B (two-component polyurethane sealant))
11.26% 2.82% Plasticizer Subscribe to view
Aquafil
112945-52-5
(Nested within Part B (two-component polyurethane sealant))
5.78% 1.45% Filler Subscribe to view
Toluene 2,4-diisocyanate
584-84-9
(Nested within Part B (two-component polyurethane sealant))
2.17% 0.54% Monomer Subscribe to view
2,6-TOLUENE DIISOCYANATE (2,6 TDI)
91-08-7
(Nested within Part B (two-component polyurethane sealant))
0.70% 0.18% Monomer Subscribe to view

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Known or Potential Residuals

Known or Potential Residuals for Chemical
CASRN NAME GS SCORE TYPE FREQUENCY % Weight Chemical % Weight Product SOURCE
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Other Process Chemicals

CASRN NAME GS Score TYPE FREQUENCY % WT CHEM % WT PRODUCT SOURCES
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Sources

Sources for Common Product Data
Source Uploaded Document Linked Document
Aerosil150_TDS
Bostik_sealants
CN106753178B
Dymeric240FS_SDS
Dymeric240FS_TDS
EngenPatent_1996
EP1678230B1
Evonik_SampleForm
Handbook of Sealant Technology
MasterSealNP2_AccelSDS
MasterSealNP2_PartASDS
MasterSealNP2_PartBSDS
MasterSealNP2_TDS
MasterSealSL2_HPD
Mesamoll_TDS
PCI_WaterborneUrethane
PecoraDynaTroll_PartASDS
PecoraDynaTroll_PartBSDS
PecoraDynaTroll_PDS
Permabond_2CPUR
Sikaflex2cNSEZMix_BoosterSDS
Sikaflex2cNSEZMix_PDS
Sikaflex2cNSEZMix_PtASDS
Sikaflex2cNSEZMix_PtBSDS
Ullmann's - Sealing Materials