Polycarbonate diol
US8318890B2 · kind B2 · utility
1Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2006 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Mar 23, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/664
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polycarbonate diol which is useful as a raw material compound for producing a polycarbonate-based polyurethane having a sufficient mechanical strength and excellent in a balance of physical properties such as oil resistance, hydrolysis resistance, and weather resistance and which is amorphous. The polycarbonate diol includes repeating units of the below-shown formula (A) and the below-shown formula (B), wherein both terminal groups are hydroxyl groups, the ratio of the below-shown formula (A) to the below-shown formula (B) is 99:1 to 1:99 by mol, and number-average molecular weight is 300 to 10,000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.