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US 10,377,906 B2Granted
Composition for rheology control
AssigneeBYK-Chemie GmbH
InventorsDaniela Leutfeld, Marc Eberhardt, René Nagelsdiek, Sylvia Bühne, Jürgen Omeis, Jasmin Rudner
Life of this patent
Estimating the term…
Abstract
The invention relates to a rheology control agent containing i) 15-95% by weight of an amide compound (A), ii) 5-75% by weight of a urea compound (B), iii) 0-50% by weight of an ionogenic compound (C) and iv) 0-35% weight of an organic solvent (D).
Claims22
A composition comprising
- i) 15-95 wt % of an amide compound (A),
- ii) 5-75 wt % of a urea compound (B),
- iii) 0-50 wt % of an ionogenic compound (C), and
- iv) 0-35 wt % of an organic solvent (D),
- where the amide compound (A) has a molar mass of 70 to 600 g/mol, the amide compound (A) contains not more than one amide group with hydrogen bonded to its nitrogen atom, the amide compound (A) has no urea group, no phosphorus, no silicon, and no halogen, and the amide compound (A) is present in accordance with the general formula (I),
- where
- Xx is identical or different and is represented by an amide group C(═O)—N which is linked to Rz, Ra, and Rb in accordance with one of the general formulae RzC(═O)—NRaRb (Xx1), RaC(═O)—NRzRb (Xx2), and RbC(═O)—NRzRa (Xx3)
- Xy is identical or different and is represented by an amide group C(═O)—N which is linked to Rz, Rc, and Rd in accordance with one of the general formulae RzC(═O)—NRcRd (Xy1), RcC(═O)—NRzRd (Xy2), and RdC(═O)—NRzRc (Xy3)
- Rz in each case is identical or different and is represented by a branched or unbranched, saturated or unsaturated hydrocarbon radical which has 1 to 32 carbon atoms and which as heteroatom-containing groups may optionally contain exclusively amino groups, amide groups, or mixtures thereof
- Ra, Rb, Rc, and Rd, in each case identically or differently and in each case independently of one another, are represented by hydrogen or a branched or unbranched, saturated or unsaturated organic radical containing 1 to 16 carbon atoms, with the proviso that
- Ra, Rb, Re, and Rd in their entirety have at least four carbon atoms,
- not more than one of the radicals from the group of Ra, Rb, Rc, and Rd is present in the form of hydrogen,
- at least one of i) Ra and Rb, together with the CO—N moiety joining Ra to Rb or ii) Re and Rd, together with the CO—N moiety joining Rc to Rd, may optionally together, in accordance with the general formula (α-1), form a cyclic structure having 4 to 10 ring atoms, and
- at least one of iii) Ra and Rb, together with the N atom joining Ra to Rb or iv) Rc and Rd, together with the N atom joining Rc to Rd, may optionally together, in accordance with the general formula (β-1), form a cyclic structure having 4 to 7 ring atoms, or
- Rb and Rc together with the N atom bonded to each of Rb and Rc, and also with the radical Rz, may optionally, in accordance with the general formula (γ-1), form a cyclic structure having 5 to 7 ring atoms
- Ra, Rb, Re, Rd, and Rz in their entirety have not more than 36 carbon atoms and also not more than 8 heteroatoms from the group of N and O,
- the urea compound (B) has a molecular weight of at least 350 g/mol and at least one urea group,
- the ionogenic compound (C) contains a cationic component and an anionic component and is different from the amide compound (A) and from the urea compound (B), and
- the organic solvent (D) contains no urea group and no ionic group and also has not more than two heteroatoms selected from the group consisting of nitrogen and oxygen.
16 more elements
Dependencies are inferred from the claim text.