Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO
대리인 / 주소
Muserlian, Lucas & Mercanti
인용정보
피인용 횟수 :
12인용 특허 :
3
초록▼
A biodegradable thermoplastic material comprising a natural polymer, a plasticizer and an exfoliated clay having a layered structure and a cation exchange capacity of from 30-250 milliequivalents per 100 grams and a process of preparing a biodegradable thermoplastic material comprising preparing a s
A biodegradable thermoplastic material comprising a natural polymer, a plasticizer and an exfoliated clay having a layered structure and a cation exchange capacity of from 30-250 milliequivalents per 100 grams and a process of preparing a biodegradable thermoplastic material comprising preparing a suspension of clay, combining said suspension with a natural polymer and a plasticizer and extruding the resultant composition at a temperature of 35-200° C.
대표청구항▼
1. A biodegradable thermoplastic material comprising a natural polymer, a plasticizer and an exfoliated clay having a layered structure, said clay having a cation exchange capacity of from 30 to 250 milliequivalents per 100 grams. 2. The material of claim 1, wherein the cation exchange capacity is f
1. A biodegradable thermoplastic material comprising a natural polymer, a plasticizer and an exfoliated clay having a layered structure, said clay having a cation exchange capacity of from 30 to 250 milliequivalents per 100 grams. 2. The material of claim 1, wherein the cation exchange capacity is from 50 to 200 milliequivalents. 3. The material of claim 1, wherein the clay is a smectite clay mineral. 4. The material of claim 1, wherein the clay is present in an amount of from 0.1 to 90 wt. %, based on the weight of the biodegradable thermoplastic material. 5. The material of claim 1, wherein the natural polymer is a carbohydrate or a protein. 6. The material of claim 5, wherein the natural polymer is chosen from the group consisting of starch, cellulose, chitosan, alginic acid, inulin, pectin, and combinations thereof. 7. The material of claim 1, wherein the plasticizer is selected from the group consisting of water, glycerol, ethylene glycol, an oligomer of ethylene glycol and combinations thereof. 8. The material of claim 1, wherein the plasticizer is present in an amount of 15 to 60 wt. %, based on the weight of the biodegradable thermoplastic material. 9. An article of manufacture comprising a biodegradable thermoplastic material according to claim 1. 10. A process for preparing a biodegradable thermoplastic material according to claim 1, comprising preparing a suspension of the clay in water and/or another plasticizer, and extruding the suspension together with the natural polymer and the plasticizer at a temperature of from 35 to 200° C. 11. A process according to claim 10, wherein the suspension of the clay is heated before extrusion to a temperature of up to 60° C. in order to exfoliate the clay. 12. A process according to claim 10, wherein the clay suspension is ion exchanged with at least part of the natural polymer. 13. A process according to claim 10, wherein the clay suspension is ion exchanged with a modifying agent, the modifying agent being a surfactant having from 6 to 16 carbon atoms, a functionality compatible with the natural polymer and an ammonium, phosphonium or sulfonium group. 14. A method of improving the stability of a biodegradable thermoplastic material containing a natural polymer and a plasticizer, comprising:a) preparing a suspension of clay having a cation exchange capacity of from 30 to 250 milliequivalents per 100 grams in water, said suspension optionally containing a plasticizer;b) combining said suspension with a natural polymer and a plasticizer; andc) extruding the resultant composition at a temperature of between 35 and 200° C. 15. The method of claim 14, wherein said claim is exfoliated.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (3)
Goldman Stephen A. (Cincinnati OH) Myhre David V. (Cincinnati OH) Retzsch Herbert L. (Cincinnati OH), Absorbent vegetable materials.
Dessauer Guido (Tutzing DEX), Process for the production of a pigment-based agent suitable for the paper and board industry and improving the printabi.
Fischer,Sabine; Craenmehr,Eric G. M.; De Vlieger,Jan J.; Slaghek,Theodoor M., Biodegradable polymer material consisting of starch and dialdehyde polysaccharide.
Drummy, Lawrence F.; McAuliffe, Joseph C.; Naik, Rajesh R.; Vaia, Richard A., Nanocomposites of repeat sequence proteins and phyllosilicate clays and their preparation.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.