Water-in-oil polymeric emulsion composition and method for manufacturing water-in-oil polymeric emulsion composition
AssigneesKci Limited, Ker Chemistry, Sarl
InventorsGwang Ho YOON, Mae In LEE, Seong Gi OH, Mallo PAUL
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Abstract
The present invention provides a water-in-oil polymeric emulsion composition, including: (a) 25 to 65 wt % of a cross-linked polymer, (b) 15 to 40 wt % of an oil; (c) 1 to 12 wt % of a surfactant; and (d) 1 to 40 wt % of water, wherein (a) the cross-linked polymer is polymerized by using 35 to 85 mol % of a 2-arylamido-2-methylpropane-sulfonic acid totally or partially salified by an alkali metal or ammonium, 15 to 65 mol % of acryloyl morpholine, and 0.005 to 1 mol % of a polyethylenic monomer used as a cross-linking agent.
Claims34
A water-in-oil polymeric emulsion composition, comprising:
- (a) 25 to 65 wt % of a cross-linked polymer;
- (b) 15 to 40 wt %/o of at least one oil;
- (c) 1 to 12 wt % of a least one surfactant or polymeric surfactant;
- and
- (d) 1 to 40 wt % of water,
- wherein (a) the cross-linked polymer is polymerized by using 35 to 85 mol % of a 2-acrylamido-2-methylpropane-sulfonic acid totally or partially salified by an alkali metal or ammonium, 15 to 65 mol % of acryloyl morpholine, and 0.005 to 1 mol % (mole of cross-linker/mole of monomer) of a polyethylenic monomer used as a cross-linking agent.
A method for manufacturing a water-in-oil polymeric emulsion composition, comprising steps of:
- (S1) forming an aqueous-phase by mixing a cross-linking agent, and a 2-acrylamido-2-methylpropane-sulfonic acid totally or partially salified by an alkali metal or ammonium and a acryloyl morpholine as monomers into water and dissolving them into water;
- (S2) forming an oil-phase by mixing an oil and a surfactant or polymeric surfactant having a HLB of 3 to 7;
- (S3) forming an water in oil emulsion by adding the aqueous-phase into the oil-phase and stirring them;
- and
- (S4) polymerizing a water-in-oil polymeric emulsion by adding a radical initiator into the water in oil emulsion.
Dependencies are inferred from the claim text.