Blends of a polylactic acid and a water soluble polymer
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A24D-003/10
A24D-003/06
C08G-063/91
A24D-003/08
C08J-005/18
C08L-067/04
D01F-006/50
D01F-006/92
D01F-001/02
C08L-001/28
C08L-005/00
C08L-029/04
C08L-051/08
출원번호
US-0008968
(2012-03-29)
등록번호
US-9085660
(2015-07-21)
우선권정보
GB-1105455.8 (2011-03-31)
국제출원번호
PCT/GB2012/050697
(2012-03-29)
§371/§102 date
20131127
(20131127)
국제공개번호
WO2012/131370
(2012-10-04)
발명자
/ 주소
Quintana, Robert
Persenaire, Olivier
Bonnaud, Leila
Dubois, Philippe
Lemmouchi, Yahia
출원인 / 주소
British American Tobacco (Investments) Limited
대리인 / 주소
Poulsen, NW
인용정보
피인용 횟수 :
0인용 특허 :
19
초록▼
The present invention relates to water-dispersive biodegradable compositions which may be formed into films and fibers. The present invention also relates to polymer blends comprising polylactide and water-soluble polymers. More particularly, the present invention relates to the use of grafted copol
The present invention relates to water-dispersive biodegradable compositions which may be formed into films and fibers. The present invention also relates to polymer blends comprising polylactide and water-soluble polymers. More particularly, the present invention relates to the use of grafted copolymers (PLA-grafted water-soluble polymers) for the compatibilization of PLA and water-soluble polymers. Such reactive compatibilization of immiscible polymer blends is achieved in such a way that main blend components are covalently bonded. In addition, such reactive compatibilization can be carried out by reactive extrusion.
대표청구항▼
1. An apparatus, comprising: a smoking article filter element including water-dispersive fibres formed from a composition comprising a blend of polylactide (PLA) and a water soluble polymer, wherein the blend further comprises a reactive compatibilizer in an amount sufficient to compatibilize the bl
1. An apparatus, comprising: a smoking article filter element including water-dispersive fibres formed from a composition comprising a blend of polylactide (PLA) and a water soluble polymer, wherein the blend further comprises a reactive compatibilizer in an amount sufficient to compatibilize the blend. 2. The apparatus as claimed in claim 1, wherein the water soluble polymer is selected from the group consisting of: polyvinyl alcohol (PVOH), carboxymethyl cellulose (CMC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), methyl cellulose (MC) and ethyl cellulose (EC), xanthan and pullulan, and blends thereof. 3. The apparatus as claimed in claim 2, wherein the water soluble polymer is one of PVOH and HEC. 4. The apparatus as claimed in claim 1, wherein the water soluble polymer is included in an amount within the range of 30 to 70 wt % of the blend of polylactide and water soluble polymer. 5. The apparatus as claimed in claim 1, wherein the reactive compatibilizer is a grafted copolymer. 6. The apparatus as claimed in claim 5, wherein the grafted copolymer is a copolymer of PLA and a compound reactive towards hydroxyl groups. 7. The apparatus as claimed in claim 6, wherein the grafted copolymer is maleic anhydride-grafted polylactide (MA-g-PLA). 8. The apparatus as claimed in claim 1, wherein the composition further comprises at least one of 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane, an acyl peroxide, an aralkyl peroxide, a peroxyester, a dialkyl peroxymonocarbonate, a peroxydicarbonate, a hydroperoxide, a ketone peroxide, and an azo compound. 9. The apparatus as claimed in claim 1, wherein the composition further comprises at least one additional component selected from the group consisting of agents improving the melt viscosity of the composition, anti-static agents, organo-modified clays, pigments, colorants, lubricants and slip agents. 10. The apparatus as claimed in claim 9, wherein the additional components are included in an amount of less than 3 weight percent of the final composition. 11. A method of preparing the apparatus as claimed in claim 1, the method comprising forming water-dispersive fibres from the composition comprising a blend of polylactide and a water soluble polymer, and processing through reactive extrusion of a blend of polylactide, a water soluble polymer and a reactive compatibilizer. 12. The method as claimed in claim 11, wherein the polylactide, water soluble polymer and reactive compatibilizer are melt blended. 13. The method as claimed in claim 11, wherein the reactive compatibilizer is maleic anhydride-grafted polylactide prepared by reactive extrusion of PLA and maleic anhydride. 14. The method as claimed in claim 13, wherein the maleic anhydride-grafted polylactide comprises from 0.1 to 5 mot % of grafted maleic anhydride. 15. The method as claimed in claim 11, wherein compatibilization involves the formation of chemical covalent bonds. 16. The apparatus as claimed in claim 4, wherein the water soluble polymer is included in an amount within the range of 40 to 60 wt % of the blend of polylactide and water soluble polymer. 17. The apparatus as claimed in claim 4, wherein the water soluble polymer is included in an amount within the range of 45 to 55 wt % of the blend of polylactide and water soluble polymer. 18. The method as claimed in claim 14, wherein the maleic anhydride-grafted polylactide comprises from 0.2 to 1 mol % of grafted maleic anhydride. 19. The method as claimed in claim 14, wherein the maleic anhydride-grafted polylactide comprises from 0.3 to 0.65 mol % of grafted maleic anhydride.
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이 특허에 인용된 특허 (19)
Wu Pai-Chuan (Cincinnati OH) Moore ; Jr. Frank (Hamilton OH) Ryle Thomas R. (Burlington KY), Biodegradable film containing an alkanoyl polymer/PVA blend and method of making same.
Kim Young H. (Seoul KRX) Ahn Kwang D. (Seoul KRX) Han Yang K. (Seoul KRX) Kim Soo H. (Seoul KRX) Kim Jeong B. (Seoul KRX), Biodegradable poly(lactic acid)s having improved physical properties and process for their preparation.
Patnode Gregg A. (Woodbury MN) Bruno John E. (Franconia Township ; Chisago County MN) Rutherford Denise R. (Oakdale MN) Sandison Walter B. (St. Louis Park MN) Schlei Dietmar (Hudson Township ; St. Cr, Dispersible compositions and articles and method of disposal for such compositions and articles.
Patnode Gregg A. (Woodbury MN) Bruno John E. (Franconia Township MN) Rutherford Denise R. (Oakdale MN) Sandison Walter B. (St. Louis Park MN) Schlei Dietmar (Hudson Township WI), Dispersible compositions and articles and method of disposal for such compositions and articles.
Patnode Gregg A. (Woodbury MN) Bruno John E. (Franconia Township ; Chisago County MN) Rutherford Denise R. (Oakdale MN) Sandison Walter B. (St. Louis Park MN) Schlei Dietmar (Hudson Township ; St. Cr, Method of disposal for dispersible compositions and articles.
Hubbell Jeffrey A. (Austin TX) Pathak Chandrashekhar P. (Waltham MA) Sawhney Amarpreet S. (Newton MA) Desai Neil P. (Los Angeles CA) Hill Jennifer L. (Austin TX), Photopolymerizable biodegradable hydrogels as tissue contacting materials and controlled-release carriers.
Wang James Hongxue ; Schertz David Michael ; Soerens Dave Allen ; Rhim Hannong, Water-responsive, biodegradable fibers comprising polylactide modified polylactide and polyvinyl alcohol, and method fo.
Wang James Hongxue ; Schertz David Michael ; Soerens Dave Allen, Water-responsive, biodegradable film compositions comprising polylactide and polyvinyl alcohol, and a method for making the films.
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