Copolymers having phosphorus group-carrying monomeric units
AssigneeSika Technology AG
InventorsJürg Weidmann, Lukas Frunz, Joachim Glaus, Jürgen Gresser
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Abstract
A copolymer, in particular a dispersant for solid particles, in particular a dispersant for mineral binder compositions, including a polymer backbone and sidechains bound thereto. Said copolymer includes at least one phosphorus group-carrying monomeric unit M1 and at least one sidechain-carrying monomeric unit M2, the copolymer having, in a direction along the polymer backbone, a non-random distribution of the monomeric units M1 and/or of the monomeric units M2.
Claims12
A copolymer having a polymer backbone and side chains bonded thereto, comprising at least one phosphorus group-bearing monomer unit M1 and at least one side chain-bearing monomer unit M2, wherein:
- the copolymer has a nonrandom distribution of the monomer units M1 and/or the monomer units M2 in a direction along the polymer backbone,
- the copolymer has a gradient structure in at least one section AA in a direction along the polymer backbone with respect to the phosphorus group-bearing monomer unit M1 and/or with respect to the side chain-bearing monomer unit M2, and
- the copolymer, in addition to the at least one section AA, has a section AB where there is essentially a constant local concentration of the monomers and/or a statistical or random distribution of the monomers over the entire section AB.
Dependencies are inferred from the claim text.