US4948845A
Expired / Lapsed
US
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Novel surfactants based on poly(alkylene carbonate)s
Assignee: BASF Corp
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Filing: 1989-04-17
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Granted: 1990-08-14
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Expires: 2009-04-17
Abstract
Abstract A polyether polycarbonate block copolymer nonionic surface-active agent and method for making the same. The polyether polycarbonate surface active agent is comprised of a hydrophilic portion comprised of a polymer selected from the group consisting of a polyoxyalkylene polyether, a saccharide, a saccharide polyoxyalkylenate, a polycarbonate having a carbon dioxide content of from about 1 to 15 molar percent and mixtures thereof and a hydrophobic portion comprising alkylene and carbonate units arranged in alternating or random order to form a poly(alkylene carbonate) having a total carbon dioxide content of from about 25 to 50 molar percent and a total molecular weight of from about 300 to 10,000. The hydrophobic portion is bonded to the hydrophilic portion at each side of a reactive hydrogen. The surface active agent is prepared by polymerizing the hydrophilic portion with the hydrophobic portion in a weight ratio of about 10:90 to 90:10.
Inventors
- 👤 Steven D. Gagnon
- 👤 Edward M. Dexheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:18
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3703; C11D3/3715; C08; C08G; C08G64/00; C08G64/18; C08G64/183; C09; C09K; C09K23/00; C09K23/42; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
132 words
A method for preparing a polyether polycarbonate block copolymer nonionic surface-active agent, comprising polymerizing, at a temperature effective to polymerize, a hydrophilic portion comprised of a polymer selected from the group consisting of a polyoxyalkylene polyether, a saccharide, a saccharide polyalkylate, a poly(alkylene carbonate) having a carbon dioxide content of from about 1 to 15 molar percent, and mixtures thereof, with a hydrophobic portion comprised of alkylene and carbonate units arranged in alternating or random order to form a poly(alkylene carbonate) having a total carbon dioxide content of from about 25 to 50 molar weight percent and a molecular weight of from about 300 to 10,000, at the site of each reactive hydrogen atom, said hydrophobic portion and said hydrophilic portion present in a weight ratio of from about 10:90 to 90:10.
Claim 2
Independent Claim
132 words
A method for preparing a polyether polycarbonate block copolymer nonionic surface-active agent, comprising polymerizing, at a temperature effective to polymerize, a hydrophilic portion comprised of a polymer selected from the group consisting of a polyoxyalkylene polyether, a saccharide, a saccharide polyalkylate, a poly(alkylene carbonate) having a carbon dioxide content of from about 1 to 15 molar percent, and mixtures thereof, with a hydrophobic portion comprised of alkylene and carbonate units arranged in alternating or random order to form a poly(alkylene carbonate) having a total carbon dioxide content of from about 25 to 50 molar weight percent and a molecular weight of from about 300 to 10,000, at the site of each reactive hydrogen atom, said hydrophobic portion and said hydrophilic portion present in a weight ratio of from about 10:90 to 90:10.
Claim 3
Dependent Claim
12 words
The method of claim 1, wherein said poly(alkylene carbonate) is poly(ethylene carbonate).
Claim 4
Dependent Claim
14 words
The method of claim 1, wherein the alkylene polyether block polymer is poly(ethylene oxide).
Claim 5
Dependent Claim
12 words
The method of claim 1, wherein the alkylene polyether is poly(propylene oxide).
Claim 6
Dependent Claim
19 words
The method of claim 1, wherein the polymerization is carried out at a temperature less than about 200° C.
Claim 7
Independent Claim
76 words
A method for preparing a polyether polycarbonate block copolymer surface-active agent, comprising oxyethylating, at a temperature sufficient to promote oxyethylation, a poly(alkylene carbonate) having a total carbon dioxide content of about 25 to 50 molar percent, and a total molecular weight of about 300 to 10,000, in the presence of a catalytically effective amount of an oxyethylation catalyst at a temperature sufficient to promote oxyethylation at a hydrophile/hydrophobe weight ratio of from about 10:90 to 90:10.
Claim 8
Independent Claim
76 words
A method for preparing a polyether polycarbonate block copolymer surface-active agent, comprising oxyethylating, at a temperature sufficient to promote oxyethylation, a poly(alkylene carbonate) having a total carbon dioxide content of about 25 to 50 molar percent, and a total molecular weight of about 300 to 10,000, in the presence of a catalytically effective amount of an oxyethylation catalyst at a temperature sufficient to promote oxyethylation at a hydrophile/hydrophobe weight ratio of from about 10:90 to 90:10.
Claim 9
Independent Claim
64 words
A method for producing a polyether polycarbonate block copolymer surface active agent, comprising adding α-alkyl,ω-hydroxypoly(ethylene oxide) at a temperature sufficient to promote said addition, with an α,ω-bischloroformate of a poly(alkylene carbonate) having a total percent carbon dioxide content of about 25 to 50 molar percent, and an average weight of about 300 to 10,000, in a weight ratio of from about 10:90 to 90:10.
Claim 10
Independent Claim
64 words
A method for producing a polyether polycarbonate block copolymer surface active agent, comprising adding α-alkyl,ω-hydroxypoly(ethylene oxide) at a temperature sufficient to promote said addition, with an α,ω-bischloroformate of a poly(alkylene carbonate) having a total percent carbon dioxide content of about 25 to 50 molar percent, and an average weight of about 300 to 10,000, in a weight ratio of from about 10:90 to 90:10.
Claim 11
Dependent Claim
20 words
The method of claim 7, wherein said addition is conducted at a temperature range of about 0 to 45° C.
Claim 12
Independent Claim
67 words
A method for producing a polyether polycarbonate block copolymer surface active agent, comprising adding the chloroformate of an α-alkyl-ω-hydroxypoly(ethylene oxide) it at a temperature sufficient to promote said addition, to an α,ω-dihydroxy poly(alkylene carbonate) having a total percent carbon dioxide content of about 25 to 50 molar percent, and a molecular weight of about 300 to 10,000, in a weight ratio of from about 10:90 to 90:10.
Claim 13
Independent Claim
67 words
A method for producing a polyether polycarbonate block copolymer surface active agent, comprising adding the chloroformate of an α-alkyl-ω-hydroxypoly(ethylene oxide) it at a temperature sufficient to promote said addition, to an α,ω-dihydroxy poly(alkylene carbonate) having a total percent carbon dioxide content of about 25 to 50 molar percent, and a molecular weight of about 300 to 10,000, in a weight ratio of from about 10:90 to 90:10.
Claim 14
Dependent Claim
20 words
The method of claim 9, wherein said addition is conducted at a temperature range of about 0 to 45° C.
Claim 15
Independent Claim
95 words
A method for producing a polyether polycarbonate block copolymer surface-active agent, comprising coupling to form a AB or ABA copolymer at a temperature sufficient to promote coupling, a difunctional acid chloride with a monofunctional poly(alkylene oxide), poly(alkylene carbonate), having alkylene and carbonate units arranged in random or alternating order, a total percent carbon dioxide content of about 25 to 50 molar percent and a molecular weight of about 300 to 10,000, in a weight ratio of about 10:90 to 90:10, said active hydrogen used in coupling can reside either on the polyether or polycarbonate block.
Claim 16
Independent Claim
95 words
A method for producing a polyether polycarbonate block copolymer surface-active agent, comprising coupling to form a AB or ABA copolymer at a temperature sufficient to promote coupling, a difunctional acid chloride with a monofunctional poly(alkylene oxide), poly(alkylene carbonate), having alkylene and carbonate units arranged in random or alternating order, a total percent carbon dioxide content of about 25 to 50 molar percent and a molecular weight of about 300 to 10,000, in a weight ratio of about 10:90 to 90:10, said active hydrogen used in coupling can reside either on the polyether or polycarbonate block.
Claim 17
Dependent Claim
25 words
The method of claim 11, wherein the difunctional acid chloride is selected from the group consisting of malonic, succinic, glutaric, adipic, pimelic and mixtures thereof.
References Cited (Backward Citations)
US4634743A
Cited
US4686273A
Cited
US4663399A
Cited
US4686274A
Cited
US4686276A
Cited
US4665136A
Cited
US4745162A
Cited
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