C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
402/3, 260/457.2
C07F 9/32 (2006.01) A61K 8/55 (2006.01) A61K 8/81 (2006.01) A61Q 19/00 (2006.01) C04B 24/00 (2006.01) C07F 9/40 (2006.01) C07F 9/6571 (2006.01) C08F 20/00 (2006.01) C08F 30/02 (2006.01) C09K 8/22 (2006.01) C09K 8/88 (2006.01)
Patent
CA 1339143
Novel alkenylphosphonic and phosphinic acid esters of 1,1,1-tris(hydroxymethyl)alkanes and of 2,2-bis-hydroxymethyl- 1,3-propanediol of the formula I Image (I) wherein n is 1 or 2, R1 is, for example, C1-C4 alkyl, R2 is a group of the general formula III (III) Image wherein m is 0 or 1, R5 is C1-C4 alkyl, R6 is, hydrogen or C1-C4 alkyl and wherein R3 is hydrogen or a group of formula III and R4 is, for example, hydrogen. The new compounds are non-volatile, low-odour substances having a very good solubility and useful as cross-linking agents in the synthesis of polymers, in particular water-swellable hydrogels, from unsaturated monomers. Processes for the preparation of the compounds and hydrogels produced using them are also disclosed.
600185
Engelhardt Friedrich
Gersdorf Joachim
Kleiner Hans-Jerg
Riegel Ulrich
Cassella Aktiengesellschaft
Fetherstonhaugh & Co.
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