Back to results
US 7,652,111 B2Granted
(Meth)acrylic acid esters of unsaturated aminoalcohols and preparation thereof
AssigneeBASF SE
InventorsDieter Hermeling, Thomas Daniel, Mark Elliott, Ulrich Riegel, Frank Dietsche, Reinhold Schwalm
Life of this patent
Estimating the term…
Abstract
Disclosed are novel (meth)acrylic esters of unsaturated amino alcohols, a process for their preparation and their use for preparing crosslinked swellable hydrogel-forming polymers and crosslinked swellable hydrogel-forming polymers.
Claims17
(Meth)acrylic esters of unsaturated aminoalcohols of general formula (I)
- wherein
- R1, R2, R3, R4, and R5 are each independently hydrogen or C1 to C6 alkyl, of which C3 to C6 alkyl may be branched or unbranched,
- R6 is C1 to C6 alkyl, of which C3 to C6 alkyl may be branched or unbranched,
- R7 is hydrogen or methyl,
- m is an integer from 0 to 10,
- n is 1 or 2,
- o is 0 or 1,
- p is 1 or 2,
- q is an integer from 2 to 100,
- the sum total of n, o, and p is 3, and
- A represents identical or different radicals selected from the group consisting of
- wherein * identifies the positions of attachment.
9 more elements
A swellable hydrogel-forming polymer comprising a copolymerized internal crosslinker of a general formula (I)
- wherein
- R1, R2, R3, R4, and R5 are each independently hydrogen or C1 to C6 alkyl, of which C3 to C6 alkyl may be branched or unbranched,
- R6 is C1 to C6 alkyl, of which C3 to C6 alkyl may be branched or unbranched,
- R7 is hydrogen or methyl,
- m is an integer from 0 to 10,
- n is 1 or 2,
- o is 0 or 1,
- p is 1 or 2,
- q is an integer from 1 to 100,
- the sum total of n, o, and p is 3, and
- A represents identical or different radicals selected from the group consisting of
8 more elements
Dependencies are inferred from the claim text.