EP0098352A2
Expired / Lapsed
EP
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Separation of saccharides
Assignee: Honeywell UOP LLC
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Filing: 1983-04-18
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Granted: —
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Expires: 2003-04-18
Abstract
Abstract The separation of mono- or disaccharids such as glucose or maltose from polysaccharides such as starch may be effected by passing a mixture of these saccharides through an ultra-filtration membrane whereby the glucose or maltose is separated from the starch. The ultra-filtration membranes which are employed for this purpose will comprise a cross-linked polyurethane composited on a support. As an example of the type of membrane which may be employed, an aminemodified polyepihalohydrin such as epichlorohydrin which has been cross-linked with toluene diisocyanate is composited on a polysulfone. This type of ultra-filtration membrane will permit the use of a relatively high flux with a good separation efficiency.
Inventors
- 👤 Joseph James Zupancic
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 16:06
CPC Classifications
C; C13; C13K; C13K13/00; C13K13/007; B; B01; B01D; B01D61/00; B01D61/14; B01D61/145; B01D69/00; B01D69/12; B01D69/125; C13K1/00; C13K7/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
44 words
A process for the separation of a mono- or disaccharide from polysaccharides which comprises passing a mixture of monosaccharide, disaccharide and polysaccharides over an ultra-filtration membrane comprising a cross-linked polyurethane or polyamide composited on a support at ultra-filtration conditions, and recovering the mono-or disaccharide.
Claim 2
Dependent Claim
44 words
A process for the separation of a mono- or disaccharide from polysaccharides which comprises passing a mixture of monosaccharide, disaccharide and polysaccharides over an ultra-filtration membrane comprising a cross-linked polyurethane or polyamide composited on a support at ultra-filtration conditions, and recovering the mono-or disaccharide.
Claim 3
Dependent Claim
43 words
The process as set forth in Claim 1 in which said ultra-filtration conditions include a temperature in the range of from about ambient to about 70°C and a pressure in the range of from about 20 to about 1000 psi (140-7000 k Pa).
Claim 4
Dependent Claim
15 words
The process as set forth in Claim 1 in which said support is a polysulfone.
Claim 5
Dependent Claim
14 words
The process as set forth in Claim 1 in which said support is polyolefin.
Claim 6
Dependent Claim
14 words
The process as set forth in Claim 4 in which said polyolefin is polyethylene.
Claim 7
Dependent Claim
14 words
The process as set forth in Claim 4 in which said polyolefin is polypropylene.
Claim 8
Dependent Claim
33 words
The process as set forth in Claim 1 in which said cross-linked polyurethane or polyamide is prepared by treating an aqueous solution of a polyamine with an organic solution and a cross-linking agent.
Claim 9
Dependent Claim
27 words
The process as set forth in Claim 7 in which said aqueous solution of said polyamine contains from about 0.4% to about 1.2% by weight of polyamine.
Claim 10
Dependent Claim
29 words
The process as set forth in Claim 7 in which said organic solution of said cross-linking agent contains from about 0.16 to about 0.5% by weight of cross-linking agent.
Claim 11
Dependent Claim
16 words
The process as set forth in Claim 1 in which said polyamine comprises an amine-modified polyepihalohydrin.
Claim 12
Dependent Claim
14 words
The process as set forth in Claim 10 in which said polyepihalohydrin is epichlorohydrin.
Claim 13
Dependent Claim
14 words
The process as set forth in Claim 1 in which said polyamine comprises polyethyleneimine.
Claim 14
Dependent Claim
14 words
The process as set forth in Claim 1 in which said polyamine comprises triethylenetetramine.
Claim 15
Dependent Claim
16 words
The process as set forth in Claim 1 in which said cross-linking agent is toluene diisocyanate.
Claim 16
Dependent Claim
16 words
The process as set forth in Claim 1 in which said cross-linking agent is isophthalolyl chloride.
Claim 17
Dependent Claim
14 words
The process as set forth in Claim 1 in which said monosaccharide is glucose.
Claim 18
Dependent Claim
14 words
The process as set forth in Claim 1 in which said disaccharide is maltose.
Claim 19
Dependent Claim
14 words
The process as set forth in Claim 1 in which said polysaccharide is starch.
References Cited (Backward Citations)
No citation records indexed.
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