Plastic hollow body made of high density polyolefins produced by means of a fluoro modified chrome catalyst
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08F-210/02
C08F-210/00
C08F-004/26
C08F-004/00
B29D-022/00
B29D-023/00
B65D-001/26
B65D-001/22
출원번호
US-0332581
(2001-06-28)
우선권정보
DE-100 34 191(2000-07-13)
국제출원번호
PCT/EP01/007409
(2001-06-28)
§371/§102 date
20030509
(20030509)
국제공개번호
WO02/006073
(2002-01-24)
발명자
/ 주소
Mihan,Shahram
Rohde,Wolfgang
Beuermann,Ilka
Springholz,Bernhard
출원인 / 주소
Basell Polyolefine GmbH
대리인 / 주소
Novak Druce &
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
A hollow plastic article is described, with at least one opening and with a structure which has one or more layers, the hollow plastic article comprising at least one layer made from a polyolefin which was prepared using a fluorine-modified chromium catalyst. The use of hollow plastic articles of th
A hollow plastic article is described, with at least one opening and with a structure which has one or more layers, the hollow plastic article comprising at least one layer made from a polyolefin which was prepared using a fluorine-modified chromium catalyst. The use of hollow plastic articles of the invention as plastic fuel containers, gasoline canisters, plastic tanks, or plastic bottles or the like is also described.
대표청구항▼
We claim: 1. A hollow plastic article with at least one opening, wherein the hollow plastic article, whose structure has one or more layers, has at least one layer made from a polyolefin having a density of from 0.943 to 0.955 g/cm3 and a melt flow rate MFR (190째 C./21.6 kg) of from 2 to 8 g/10 min
We claim: 1. A hollow plastic article with at least one opening, wherein the hollow plastic article, whose structure has one or more layers, has at least one layer made from a polyolefin having a density of from 0.943 to 0.955 g/cm3 and a melt flow rate MFR (190째 C./21.6 kg) of from 2 to 8 g/10 minutes, prepared using a fluorine-modified chromium catalyst. 2. A hollow plastic article as claimed in claim 1, wherein the polyolefin comprises a homopolymer or copolymer of ethylene. 3. A hollow plastic article as claimed in claim 1, wherein the polyolefin comprises a copolymer of ethylene, in which an α-olefin having from 3 to 8 carbon atoms is used as comonomer. 4. A hollow plastic article as claimed in claim 3, wherein the comonomer comprises 1-butene or 1-hexene. 5. A hollow plastic article as claimed in claim 1, wherein the density of the polyolefin used is from 0.945 to 0.953 g/cm3. 6. A hollow plastic article as claimed in claim 1, wherein the polyolefin has a melt flow rate MFR (190째 C./21.6 kg) of from 3 to 7 g/10 minutes. 7. A hollow plastic article as claimed in claim 1, which has a permeation-reducing coating. 8. A hollow plastic article as claimed in claim 1, wherein the structure of the hallow article has more than one layer and comprises, from the inside to the outside, a polyolefin layer, an adhesion promoter layer, a barrier polymer layer, an adhesion promoter layer, a regrind layer, and a polyolefin layer. 9. The hollow plastic article as claimed in claim 1 in form of a plastic fuel tank for a motor vehicle. 10. The hollow plastic article as claimed in claim 1 in form of a fuel canister, a fuel tank for storage and transport of fuels, a transport container for utility vehicles, a solvent container or a plastic bottle. 11. A method of producing a hollow plastic article with at least one opening, said method comprising coextrusion blow-molding at least one layer made from polyolefin having a density of from 0.943 to 0. 955 g/cm3 and a melt flow rate MFR (190째 C./21.6 kg) of from 2 to 8 g/10 minutes, wherein the polyolefin has been obtained using a fluorine-modified chromium catalyst. 12. The method of claim 11, for producing a plastic fuel tank for a motor vehicle. 13. The method of claim 11, for producing a fuel canister, a fuel tank for storage and transport of fuels, a transport container for utility vehicles, a solvent container or a plastic bottle. 14. The method of claim 11, wherein the fluorine-modified chromium catalyst is a supported chromium catalyst doped with ammonium hexafluorosilicate. 15. The method of claim 11, wherein the fluorine-modified chromium catalyst is prepared by fluoride doping during an impregnation step or during an activation step. 16. The method of claim 15, wherein the fluorine-modified chromium catalyst is prepared by coimpregnation of a support with a solution of fluorinating agent and a chromium compound or by adding fluorinating agent within the gas stream during air-activation. 17. The method of claim 15, wherein a fluorinating agent selected from the group consisting of ClF3, BrF3, BrF5, NH4SiF6, NH4BF4, NH4AlF 6, NH4HF2, NH4PtF6, NH4 TiF6, NH4ZrF6 is used in the fluoride doping. 18. The method of claim 11, wherein the polyolefin is a high-density polyethylene. 19. The method of claim 11, wherein the catalyst is an air-activated silica gel-supported chromium catalyst which has been modified with an inorganic fluorinating agent.
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이 특허에 인용된 특허 (5)
Stiles Ernest D. (St. Clair Shores MI) Hartsock Dale L. (Livonia MI), Fuel tank having an integrallly molded permeation barrier.
McDaniel Max P. (Bartlesville OK) Pitzer Emory W. (Bartlesville OK) Boggs Elizabeth A. (Bartlesville OK) Norwood Donald D. (Bartlesville OK) Bailey Fay W. (Bartlesville OK), Olefin polymerization using chromium on fluorided aluminophosphate.
Mueller Hans-Joachim (Gruenstadt DEX) Evertz Kaspar (Schifferstadt DEX) Weber Siegfried (Weinheim DEX) Funk Guido (Worms 1 DEX) Konrad Rainer (Goennheim DEX) Saive Roland (Ludwigshafen DEX), Phillips catalyst and its use for the preparation of ethylene/a
상세보기
Mueller Hans-Joachim (Gruenstadt DEX) Evertz Kaspar (Schifferstadt DEX) Weber Siegfried (Weinheim DEX) Funk Guido (Worms DEX) Konrad Rainer (Goennheim DEX) Saive Roland (Ludwigshafen DEX), Phillips catalyst and its use for the preparation of ethylene/alpha-olefin copolymers.
Rohde Wolfgang,DEX ; Saive Roland,DEX ; Lilge Dieter,DEX ; Lux Martin,DEX ; Bauer Peter,DEX, Polymerisates of ethylene with a high degree of resistance to stress crack, and a catalyst system for the production thereof.
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