Abrasive material having a polycarbodiimide and polyurethane resin binder
US4221572A · kind A · utility
19Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1978 |
| Grant date | Sep 9, 1980 |
| Priority date | — |
| Expiry date | Mar 2, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/901
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An abrasive material which comprises abrasive grains and a polycarbodiimide and polyurethane resin as the binder for the abrasive grains and a method of preparation thereof are disclosed. The polycarbodiimide and polyurethane resin is prepared by reacting a polyisocyanate and a polyol in the presence of a catalyst. The resin has a specified amount of carbodiimide bonding and urethane bonding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.