Bacterial cellulose-containing formulations and method of producing effective bacterial cellulose-containing formulations 机翻标题: 暂无翻译,请尝试点击翻译按钮。

公开号/公开日
WO2006127810 A2 2006-11-30 [WO2006127810]WO2006127810 A3 2007-07-26 [WO2006127810]WO2006127810 A8 2008-05-08 [WO2006127810] / 2006-11-302007-07-262008-05-08
申请号/申请日
2006WO-US20080 / 2006-05-23
发明人
YANG ZHIFA;
申请人
YANG ZHIFA;
主分类号
IPC分类号
A01N-043/04A23L-029/20A61K-031/715C12P-019/04
摘要
(WO2006127810) New formulations of bacterial cellulose and a new method to produce formulations of bacterial cellulose that exhibit improved viscosity-modifying properties particularly with low energy applied to effectuate viscosity changes therewith is provided.  Such a method includes the novel co-precipitation with a water soluble co-agent that permits precipitation in the presence of excess alcohol to form an insoluble fiber that can than be utilized as a thickener or suspension aid without the need to introduce high energy mixing.  Such bacterial cellulose properties have been available in the past but only through highly labor and energy intensive processes.  Such an inventive method as now proposed thus provides a bacterial cellulose-containing formulation that exhibits not only properties that are as effective as those for previous bacterial celluloses, but, in some ways, improvements to such previous types.  Certain end-use compositions and applications including these novel bacterial cellulose-containing formulations are also encompassed within this invention.
机翻摘要
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地址
代理人
代理机构
;
优先权号
2005US-11135065 2005-05-23 2005US-11135077 2005-05-23
主权利要求
(WO2006127810) Claims 1. A method for the production of a bacterial cellulose-containing formulation comprising the steps of a) providing a bacterial cellulose product; b) optionally lysing the bacterial cells from the bacterial cellulose product; c) mixing said bacterial cellulose product of either step "a" or step "b" with a polymeric thickener selected from the group consisting of at least one charged cellulose ether, at least one precipitation agent, and any combination thereof; and d) co-precipitating the mixture of step "c" with a water-miscible non-aqueous liquid. 2. The method of Claim 1 wherein said polymeric thickener of step "c" is a charged cellulose ether. 3. The method of Claim 2 wherein said charged cellulose ether is selected from the group consisting of sodium carboxymethylcellulose, cationic hydroxyethylcellulose, and any mixtures thereof. 4. The method of Claim 1 wherein said polymeric thickener of step "c" is a precipitation agent. 5. The method of Claim 4 wherein said precipitation agent is selected from the group consisting of a xanthan product, pectin, alginates, gellan gum, welan gum, diutan gum, rhamsan gum, carrageenan, guar gum, agar, gum arabic, gum ghatti, karaya gum, gum tragacanth, tamarind gum, locust bean gum, and any mixtures thereof. 5. The method of Claim 1 wherein said bacterial cellulose product is a microfibrillated cellulose. 6. The method of Claim 5 wherein said polymeric thickener of step "c" is a charged cellulose ether. 7. The method of Claim 6 wherein said charged cellulose ether is selected from the group consisting of sodium carboxymethylcellulose, cationic hydroxyethylcellulose, and any mixtures thereof. 8. The method of Claim 5 wherein said polymeric thickener of step "c" is a precipitation agent. 9. The method of Claim 8 wherein said precipitation agent is selected from the group consisting of a xanthan product, pectin, alginates, gellan gum, diutan gum, welan gum, rhamsan gum, carrageenan, guar gum, agar, gum arabic, gum ghatti, karaya gum, gum tragacanth, tamarind gum, locust bean gum, and any mixtures thereof. 10. The method of Claim 9 wherein said precipitation agent is selected from the group consisting of xanthan, pectin, diutan gum, and any mixtures thereof. 11. A method for the production of a bacterial cellulose-containing formulation comprising the steps of a) providing a bacterial cellulose product; b) optionally lysing the bacterial cells from the bacterial cellulose product; c) mixing said resulting bacterial cellulose product of either step "a" or step "b" with at least one precipitation agent selected from the group consisting of a xanthan product, pectin, alginates, gellan gum, welan gum, diutan gum, rhamsan gum, carrageenan, guar gum, agar, gum arabic, gum ghatti, karaya gum, gum tragacanth, tamarind gum, locust bean gum, and any mixtures thereof; and d) co-precipitating the mixture of step "c" with a water-miscible non-aqueous liquid. 12. The method of Claim 11 wherein said precipitation agent is selected from the group consisting of xanthan, pectin, diutan gum, and any mixtures thereof. 13. A method for the production of a bacterial cellulose-containing formulation comprising the steps of a) providing a bacterial cellulose product; b) mixing said bacterial cellulose product with at least one precipitation agent selected from the group consisting of a xanthan product, pectin, alginates, gellan gum, welan gum, diutan gum, rhamsan gum, carrageenan, guar gum, agar, gum arabic, gum ghatti, karaya gum, gum tragacanth, tamarind gum, locust bean gum, and any mixtures thereof; c) co-lysing the mixture of step "b" to remove bacterial cells therefrom; and d) co-precipitating the mixture of step "c" with a water-miscible non-aqueous liquid. 14. The method of Claim 13 wherein said precipitation agent is selected from the group consisting of xanthan, pectin, diutan gum, and any mixtures thereof. 15. A bacterial cellulose-containing formulation comprising at least one bacterial cellulose material and at least one polymeric thickener selected from the group consisting of at least one charged cellulose ether, at least one precipitation agent, and any mixtures thereof, wherein said formulation exhibits a viscosity capability of at least 300 cps and a yield stress measurement of 1.0 dyne/cm when introduced in an amount of at most 0.36% by weight of a 500 mL sample of water and after application of at most 2 passes at 1500 psi in an extensional homogenizer. 16. The formulation of Claim 15 wherein said polymeric thickener is at least one charged cellulose ether. 17. The formulation of Claim 16 wherein said charged cellulose ether is selected from the group consisting of at least one sodium carboxymethylcellulose, at least one cationic hydroxyethylcellulose, and any mixtures thereof. 18. The formulation of Claim 15 wherein said polymeric thickener is a precipitation agent. 19. The formulation of Claim 18 wherein said precipitation agent is selected from the group consisting of a xanthan product, pectin, alginates, gellan gum, welan gum, rhamsan gum, carrageenan, guar gum, agar, gum arabic, gum ghatti, karaya gum, gum tragacanth, tamarind gum, locust bean gum, and any mixtures thereof. 20. The formulation of Claim 15 wherein said bacterial cellulose product is microfibrillated cellulose. 21. The formulation of Claim 20 wherein including both said charged cellulose ether and said precipitation agent. 22. The formulation of Claim 21 wherein said precipitation agent is selected from the group consisting of a xanthan product, pectin, alginates, gellan gum, welan gum, diutan gum, rhamsan gum, carrageenan, guar gum, agar, gum arabic, gum ghatti, karaya gum, gum tragacanth, tamarind gum, locust bean gum, and any mixtures thereof. 23. The formulation of Claim 22 wherein said charged cellulose ether is a sodium carboxymethylcellulose. 24. The formulation of Claim 23 wherein said precipitation agent is selected from the group consisting of xanthan, pectin, diutan gum, and any mixtures thereof. 25. The formulation of Claim 24 wherein said precipitation agent is xanthan. 26. The formulation of Claim 24 wherein said precipitation agent is pectin. 27. The formulation of Claim 24 wherein said precipitation agent is diutan gum. 28. The formulation of Claim 19 wherein said precipitation agent is xanthan. 29. The formulation of Claim 19 wherein said precipitation agent is pectin. 30. The formulation of Claim 19 wherein said precipitation agent is diutan gum.
法律状态
(WO2006127810) LEGAL DETAILS FOR WO2006127810  Actual or expected expiration date=2008-11-23    Legal state=DEAD    Status=LAPSED     Event publication date=2006-05-23  Event code=WO/APP  Event indicator=Pos  Event type=Examination events  Application details  Application country=WO WOUS2006020080  Application date=2006-05-23  Standardized application number=2006WO-US20080     Event publication date=2006-11-30  Event code=WO/A2  Event type=Examination events  International application published without international search report  Publication country=WO  Publication number=WO2006127810  Publication stage Code=A2  Publication date=2006-11-30  Standardized publication number=WO2006127810     Event publication date=2007-07-26  Event code=WO/A3  Event indicator=Pos  Event type=Examination events  Later publication of ISR with revised front page  Publication country=WO  Publication number=WO2006127810  Publication stage Code=A3  Publication date=2007-07-26  Standardized publication number=WO2006127810     Event publication date=2008-05-08  Event code=WO/A8  Event indicator=Pos  Event type=Examination events  Modified first page  Publication country=WO  Publication number=WO2006127810  Publication stage Code=A8  Publication date=2008-05-08  Standardized publication number=WO2006127810     Event publication date=2008-11-23  Event code=WO/EETL  Event type=Event indicating Not In Force  PCT Application validity period expired. 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