Carbodiimide-isocyanurate foams prepared from acid-modified toluene diisocyanate
US3969288A · kind A · utility
7Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1974 |
| Grant date | Jul 13, 1976 |
| Priority date | — |
| Expiry date | Oct 2, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/902
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Acid-modified toluene diisocyanate is used to prepare rigid cellular foams characterized by carbodiimide linkages either by a one-shot process or a quasi-prepolymer process. The use of acid-modified toluene diisocyanate exhibits a more controllable reactivity with a one-shot foaming process and more stable quasi-prepolymers when using such systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.