Polish compositions
US7001463B2 · kind B2 · utility
5Cited by
6References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 18, 2001 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Oct 18, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polish composition includes a siloxane polymer of the formula wherein each group A independently represents an alkyl group having up to 6 carbon atoms, M represents an alkyl group having up to 6 carbon atoms and Q represents an alkyl group, wherein a proportion of the groups Q have more than 20 carbon atoms and the remainder have up to 6 carbon atoms, and wherein “x” is an integer selected to give a molecular weight of the polymer III in the range 3,000–30,000. In prior polish compositions the radical “Q” have been of shorter chain lengths. We have found that a longer chain length promotes reduced smearing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.