Method for the production of superabsorbers
AssigneeBASF SE
InventorsVolker Braig, Michael de Marco, Michael Stösser, Joachim Pakusch
Life of this patent
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Abstract
Superabsorbents are produced by polymerization in the presence of at least one unsaturated polyetherol selected from the group consisting of polyetherols having the following structural formulae (1), (2), (3) and (4): where n is 0 or 1, m is 1, 2, 3, 4, 5 or 6, o is a natural number from 1 to 200, and A is —(H2C—CHR1—O)— or —(R1HC—CH2—O)—, where R1 in each occurrence is independently hydrogen or an organic radical.
Claims11
A process for producing a superabsorbent, which comprises polymerizing at least one monomer in the presence of at least one crosslinker and at least one unsaturated polyetherol selected from the group consisting of polyetherols having a structural formula (1), (2), (3), and (4):
- where n is 0 or 1,
- m is 1, 2, 3, 4, 5 or 6,
- o is a natural number from 1 to 200, and
- A is —(H2C—CHR1—O)— or —(R1HC—CH2—O)—, where R1 in each occurrence is independently hydrogen or an organic radical.
Dependencies are inferred from the claim text.