Two-component polyurethane adhesive
US5041517A · kind A · utility
23Cited by
18References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1989 |
| Grant date | Aug 20, 1991 |
| Priority date | — |
| Expiry date | Jun 12, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/101
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyol is reacted with a polyisocyanate prepolymer to make a polyurethane. The polyol is the reaction product of trimethylol propane with ethylene oxide (1:3 molar). The polyisocyanate prepolymer is the reaction product of poly(ethylene adipate) with MDI. The novel polyurethane is stable in both aliphatic and aromatic hydrocarbons and is especially useful in bonding together laminates of nylon-supported permeable membranes. The laminates are used in modules for separation of hydrocarbon-containing gases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.