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US 8,883,872 B2Granted
Polymer-bound bisacylphosphine oxides
AssigneeBASF SE
InventorsHansjörg Gruützmacher, Timo Ott, Kurt Dietliker
Life of this patent
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Abstract
The invention pertains to an oligomer or polymer substituted by one or more bisacylphosphine oxide moieties, characterized in that said bisacylphosphine oxide moiety is linked via the phosphorous atom, optionally via a spacer group, to the oligomer or polymer backbone; as well as to specifically functionalized bisacylphosphine oxides, suitable to prepare said polymers or oligomers.
Claims2
A functionalized bisacylphosphine oxide compound of formula (II),
- wherein
- R1 is C1-C4-alkyl, C1-C4-alkoxy or Cl;
- R2 is H, C1-C4-alkyl, C1-C4-alkoxy or Cl:
- Y is —(CH2)a— or —CH2—CHOH—CH2—;
- a is an integer 1-10;
- FG is Cl, Br, OH, SH, NH2, N3, COOH, COO−E+, COONH2,
- b is 0, 1 or 2;
- c is 1 or 2;
- R3 is hydrogen or methyl;
- R4 is C1-C4alkyl;
- R5 and R5a independently of each other are methyl, phenyl or ethoxy;
- E is a cation;
- provided that, if a is 1, FG is not
10 more elements
Dependencies are inferred from the claim text.