Low molecular weight phosphorus-containing polyacrylic acids and use thereof as dispersants
US9238732B2 · kind B2 · utility
1Cited by
3References
10Claims
0Family size
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Key dates
| Filing date | Nov 20, 2013 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Nov 20, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F230/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An aqueous solution of an acrylic acid polymer which contains bound phosphonite groups is provided. The acrylic acid polymer is prepared by a feed operation polymerization which results in the formation of phosphinite groups bound within the acrylic acid polymer chain. The dried acrylic acid polymer is also provided. Dispersions of inorganic pigments prepared in the presence of the acrylic acid polymer or the aqueous solution of the acrylic acid polymer are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.