Hydrolysis-stable monomers with acid groups
AssigneeHeraeus Kulzer GmbH
InventorsMarcus Hoffmann, Albert Erdrich
Life of this patent
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Abstract
Compounds of the formula I R1—O—CO—C(═CHR)—Y—O-Q(AH)n (I) where A stands for a —CO2— or —SO3— group which together with H+ yields AH, Q represents C1-12alkylene, C4-12alkylene interrupted by —O—, >N—, or —S—, or, in given cases, C6-15arylene substituted with C1-4alkyl, C1-4alkoxy or halogen, where in the case of arylene the aryl groups can carry additional acid groups A, Y stands for C1-12alkylene or C4-12alkylene interrupted by —O—, >N—, or —S—, R represents methyl or H, R1 is C1-6alkyl, and n assumes the values 1, 2, or 3 are particularly suitable for the production of self-etching dental adhesives.
Claims5
Compounds of the formula I
- R1—O—CO—C(═CHR)—Y—O-Q(AH)n (I)
- where
- A represents a —CO2— group which together with H+ yields AH,
- Q represents C6-15arylene substituted with C1-4alkyl, C1-4alkoxy or halogen, where in the case of arylene
- the aryl groups carry at least one additional —CO2— group A,
- Y represents C1-12alkylene or C4-12alkylene interrupted by —O—, >N—, or —S—,
- R represents methyl or H,
- R1 is C1-6alkyl, and
- n assumes the values 2 or 3.
Process for the production of compounds of the formula I, wherein
- a compound of the formula II
- R1—O—CO—C(═CHR)Y—Br (II)
- is reacted with a compound of the formula III
- HO-Q(AL)n (III)
- where L represents a protective group which replaces the protons.
Dependencies are inferred from the claim text.