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US4713449A
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Polysaccharide polymer made by xanthomonas
Assignee: CP Kelco US Inc
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Filing: 1985-08-06
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Granted: 1987-12-15
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Expires: 2005-08-06
Abstract
Abstract A polysaccharide polymer is disclosed which is a better viscosifier of water than xanthan gum. The polysaccharide polymer and its non-acetylated form, are comprised of glucose and mannose moieties in a ratio of about 2:1. The invention also discloses Xanthomonas mutants which produce the polysaccharide polymer but which do not produce xanthan gum. Methods of preparing the polysaccharide polymers and of their use are also described.
Inventors
- 👤 Rebecca W. Vanderslice
- 👤 Patrick Shannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:42
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/06; C09K8/08; C12; C12P; C12P19/00; C12P19/04; C12P19/06; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
41 words
Water-soluble, polysaccharide polymer consisting essentially of glucose and mannose moieties, having D-glucose:D-mannose ratio of about 2:1, wherein the D-glucose moieties are linked in a beta-[1,4] configuration, and the D-mannose moieties are linked in an alpha-[1,3] configuration, generally to alternate glucose moieties.
Claim 2
Dependent Claim
41 words
Water-soluble, polysaccharide polymer consisting essentially of glucose and mannose moieties, having D-glucose:D-mannose ratio of about 2:1, wherein the D-glucose moieties are linked in a beta-[1,4] configuration, and the D-mannose moieties are linked in an alpha-[1,3] configuration, generally to alternate glucose moieties.
Claim 3
Dependent Claim
19 words
The polymer of claim 1 wherein the mannose moieties of the polysaccharide polymer are acetylated at the 6-O position.
Claim 4
Dependent Claim
20 words
The polymer of claim 1 wherein the mannose moieties of the polysaccharide polymer are not acetylated at the 6-O position.
Claim 5
Dependent Claim
63 words
A composition comprising a water-soluble, polysaccharide polymer consisting essentially of glucose and mannose moieties, having D-glucose:D-mannose ratio of about 2:1, wherein the D-glucose moieties are linked in a beta-[1,4] space configuration, and the D-mannose moieties are linked in an alpha-[1,3] configuration, generally to alternate glucose moieties, wherein the polysaccharide polymer is present in aqueous solution in amounts greater than about 1% by weight.
Claim 6
Dependent Claim
63 words
A composition comprising a water-soluble, polysaccharide polymer consisting essentially of glucose and mannose moieties, having D-glucose:D-mannose ratio of about 2:1, wherein the D-glucose moieties are linked in a beta-[1,4] space configuration, and the D-mannose moieties are linked in an alpha-[1,3] configuration, generally to alternate glucose moieties, wherein the polysaccharide polymer is present in aqueous solution in amounts greater than about 1% by weight.
Claim 7
Dependent Claim
65 words
A composition comprising a water-soluble, polysaccharide polymer consisting essentially of glucose and mannose moieties, having D-glucose:D-mannose ratio of about 2:1, wherein the D-glucose moieties are linked in a beta-[1,4] space configuration, and the D-mannose moieties are linked in an alpha-[1,3] configuration, generally to alternate glucose moieties, wherein the composition is an aqueous solution containing at least 0.001% by weight of said water soluble, polysaccharide polymer.
Claim 8
Dependent Claim
65 words
A composition comprising a water-soluble, polysaccharide polymer consisting essentially of glucose and mannose moieties, having D-glucose:D-mannose ratio of about 2:1, wherein the D-glucose moieties are linked in a beta-[1,4] space configuration, and the D-mannose moieties are linked in an alpha-[1,3] configuration, generally to alternate glucose moieties, wherein the composition is an aqueous solution containing at least 0.001% by weight of said water soluble, polysaccharide polymer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |