Hydrotalcite for P.V.C. stabilizer and a method of thereof
US8945689B2 · kind B2 · utility
1Cited by
7References
7Claims
0Family size
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Key dates
| Filing date | May 21, 2008 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | May 21, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2002/85
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of preparing hydrotalcite for a PVC stabilizer, which comprises: forming crystals of hydrotalcite represented by a formula of M(II)XM(III)Y(OH)N(Am—)Z. nH2O, wherein M(II) is a divalent metal selected from Mg2+, Ni2+ and Zn2+; M(III) is a trivalent metal selected from Al3+, Fe3+, Cr3+ and Co3+; and Am— is an anion selected from CO32-, OH—, NO3-, SO42- and halides; and depositing zinc (Zn) onto the hydrotalcite by using any one method of electrode-position, chloride ion deposition, and plasma deposition to provide zinc-deposited hydrotalcite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.