Environmentally friendly dispersion system used in the preparation of inverse emulsion polymers
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C09K-008/588
C09K-008/68
C09K-008/528
C09K-008/74
C09K-008/88
C08F-220/56
C08F-220/58
출원번호
US-0155848
(2011-06-08)
등록번호
US-9193898
(2015-11-24)
발명자
/ 주소
Chang, Kin-Tai
Wells, Kirk E.
Mello, Jesse V.
출원인 / 주소
Nalco Company
대리인 / 주소
Leydig, Voit & Mayer, Ltd.
인용정보
피인용 횟수 :
0인용 특허 :
17
초록▼
A water-in-oil emulsion composition and method of production is disclosed. The composition may comprise a monomer phase, an organic phase, at least one initiator, and an inverting phase. The monomer phase may further comprise at least one monomer, water, ammonium chloride, sodium 2-acrylamido-2-meth
A water-in-oil emulsion composition and method of production is disclosed. The composition may comprise a monomer phase, an organic phase, at least one initiator, and an inverting phase. The monomer phase may further comprise at least one monomer, water, ammonium chloride, sodium 2-acrylamido-2-methyl-1-propanesulfonate, tetrasodium ethylenediaminetetraacetate, and at least one water soluble ethylenically unsaturated monomer. The organic phase may further comprise at least one hydrophobic solvent, lecithin, and a polyoxyethylene derivative of a sorbitan ester. The at least one monomer may be selected from the group consisting of an acrylic monomer, an acrylamide monomer, and combinations thereof.
대표청구항▼
1. A method of producing a water-in-oil polymer dispersion composition, the method comprising: forming an aqueous monomer inverse emulsion by emulsifying an aqueous monomer solution comprising water, at least one water soluble ethylenically unsaturated monomer and an organic salt in an organic phase
1. A method of producing a water-in-oil polymer dispersion composition, the method comprising: forming an aqueous monomer inverse emulsion by emulsifying an aqueous monomer solution comprising water, at least one water soluble ethylenically unsaturated monomer and an organic salt in an organic phase comprising a fatty ester, a polyoxyethylene derivative of a sorbitan ester and lecithin, the aqueous monomer inverse emulsion further comprising at least one initiator;forming a water-in-oil polymer dispersion by polymerizing the at least one water soluble ethylenically unsaturated monomer of the aqueous monomer inverse emulsion, thereby forming a polymer phase comprising water, an inorganic salt, and the polymer formed by polymerizing the at least one water soluble ethylenically unsaturated monomer in the organic phase; andadding an inverting surfactant to the water-in-oil polymer dispersion, thereby producing the water-in-oil polymer dispersion composition;wherein the polyoxyethylene derivative of a sorbitan ester is selected from the group consisting of: POE(4)-sorbitan monostearate, POE(5)-sorbitan monooleate, and combinations thereof. 2. The method of claim 1, wherein the polyoxyethylene derivative of a sorbitan ester is POE(4)-sorbitan monostearate. 3. The method of claim 1, wherein the polyoxyethylene derivative of a sorbitan ester is POE(5)-sorbitan monooleate. 4. The method of claim 1, wherein the polymer is a copolymer of 2-acrylamido-2-methyl-1-propanesulfonate sodium salt and acrylamide. 5. The method of claim 1, wherein the inverting surfactant comprises an ethoxylated fatty alcohol. 6. The method of claim 1, wherein the resulting composition further comprises sodium metabisulfite. 7. The method of claim 1, wherein the resulting composition further comprises ammonium thiosulfate. 8. The method of claim 1, wherein the polyoxyethylene derivative of a sorbitan ester has a hydrophilic-lipophilic balance of from about 9 to about 10. 9. The method of claim 1, wherein the at least one water soluble ethylenically unsaturated monomer is a 2-acrylamido-2-methyl-1-propanesulfonate sodium salt and acrylamide. 10. The method of claim 1, wherein the lecithin is soy lecithin. 11. The method of claim 1, wherein the lecithin has not been subject to a thermal process. 12. The method of claim 1, wherein the organic salt is tetrasodium ethylenediaminetetraacetate. 13. The method of claim 1, wherein the hydrophobic solvent is at least 60% biodegradable after 28 days. 14. The method of claim 1, wherein the at least one initiator is 2,2′-azobisisobutyronitrile and 2,2′-azobis(2,4-dimethylvaleronitrile). 15. The method of claim 1, wherein the inverting surfactant is an ethoxylated fatty alcohol.
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이 특허에 인용된 특허 (17)
Robinson Peter M. (Columbus GA) Van-Det Nguyen (Midland GA), Bi-phase initiator system for water-in-oil emulsion polymers.
Binet Rejean (St. Bruno CAX) Cloutier Joseph A. R. (Montreal CAX) Edmonds Anthony C. F. (St. Hilaire CAX) Holden Harold W. (St. Hilaire CAX) McNicol Melvin A. (Otterburn Park CAX), Explosive compositions based on time-stable colloidal dispersions.
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