| 摘要 |
<p>A polish composition includes a siloxane polymer of formula (III) wherein each group A independently represents an alkyl group having up to 6 carbon atoms, M represents an alkyl group having up to 6 carbons 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, 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 promoters reduced smearing.</p> |
