Polycarbonate diol with ease of reaction stabilization
US8168728B2 · kind B2 · utility
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6References
4Claims
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Key dates
| Filing date | Nov 4, 2008 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | May 21, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D175/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polycarbonate diol comprising repeating units represented by the following formula (A) and a terminal hydroxy group. It is characterized in that 60-100 mol % of the repeating units represented by the formula (A) are repeating units represented by the following formula (B) or (C), the amount of the repeating units represented by the formula (B) is 10-50 mol %, excluding 50 mol %, based on the total amount of the repeating units represented by the formula (A), and the polycarbonate diol has a terminal primary OH ratio of 95-98.5%. (A) (In the formula, R represents a C2-12 divalent aliphatic or alicyclic hydrocarbon.)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.