Plastic closure with compression molded barrier liner
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IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B29C-053/16
B29D-009/00
출원번호
US-0068744
(2002-02-05)
발명자
/ 주소
Hock, Mark R.
Riffer, David B.
출원인 / 주소
Owens-Illinois Closure Inc.
인용정보
피인용 횟수 :
5인용 특허 :
42
초록▼
A plastic closure that includes a cap having a base with a peripheral skirt defining a cap interior and threads on the skirt for securing the closure to a container. A liner is secured to the interior of the cap, preferably by compression molding in situ. The liner preferably consists essentially of
A plastic closure that includes a cap having a base with a peripheral skirt defining a cap interior and threads on the skirt for securing the closure to a container. A liner is secured to the interior of the cap, preferably by compression molding in situ. The liner preferably consists essentially of a blend of matrix polymer material, particulate barrier polymer material and compatibilizer material. The heat and pressure of compression forms the particles of barrier polymer material into platelets that are oriented essentially parallel to the plane of the closure base.
대표청구항▼
A plastic closure that includes a cap having a base with a peripheral skirt defining a cap interior and threads on the skirt for securing the closure to a container. A liner is secured to the interior of the cap, preferably by compression molding in situ. The liner preferably consists essentially of
A plastic closure that includes a cap having a base with a peripheral skirt defining a cap interior and threads on the skirt for securing the closure to a container. A liner is secured to the interior of the cap, preferably by compression molding in situ. The liner preferably consists essentially of a blend of matrix polymer material, particulate barrier polymer material and compatibilizer material. The heat and pressure of compression forms the particles of barrier polymer material into platelets that are oriented essentially parallel to the plane of the closure base. o claim 1, wherein the proportion of compounds of formula IA and/or IB in the mixture as a whole is 5-50% by weight. 4. A medium according to claim 2, wherein the proportion of compounds of formula 1A and/or 1B in the mixture as a whole is 5-50% by weight. 5. A medium according to claim 1, wherein the proportion of compounds of formulae II to VIII in the mixture as a whole is 20-80% by weight. 6. A medium according to claim 2, wherein the proportion of compounds of formulae II to VIII in the mixture as a whole is 20-80% by weight. 7. A medium according to claim 4, wherein the proportion of compounds of formulae II to VIII in the mixture as a whole is 20-80% by weight. 8. A medium according to claim 1, further comprising one or more compounds of formula E1 wherein R0is alkyl, oxaalkyl, fluoroalkyl or alkenyl, each having up to 9 carbon atoms, X0is F, Cl, halogenated alkyl or alkoxy having 1 to 6 carbon atoms, or halogenated, alkenyl or alkenyloxy having up to 6 carbon atoms, and Y2is H or F. 9. A medium according to claim 8, wherein X0is F or OCF3,and Y2is H or F. 10. A medium according to claim 1, further comprising one or more compounds of formula IVa wherein R0is alkyl, oxaalkyl, fluoroalkyl or alkenyl, each having up to 9 carbon atoms, and X0is F, Cl, halogenated alkyl or alkoxy having 1 to 6 carbon atoms, or halogenated, alkenyl or alkenyloxy having up to 6 carbon atoms. 11. A medium according to one of claim 1, wherein said compounds of formulae IA and IB are selected from formulas IAa-IAh and IBa-IBh: wherein Alkenyl is a 1E- or 3E-alkenyl radical having 2-8 carbon atoms. 12. In an electro-optical liquid-crystal display containing a liquid-crystalline medium, the improvement wherein said medium is in accordance with claim 1. 13. In a method of generating an electro-optical effect using an electro-optical liquid-crystal display, the improvement wherein said display is in accordance with claim 12. 14. A compound of formula IA or formula IB in which Raand Rbare each, independently of one another, an alkenyl radical having up to 15 carbon atoms which is unsubstituted, monosubstituted by CN or CF3or at least monosubstituted by halogen, where, in addition, one or more CH2groups in these radicals may each, independently of one another, be replaced by --O--, --S--, --O--, --CO--O--, --O--CO-- or --O--CO--O-- in such a way that O atoms are not linked directly to one another, Yaand Ybare each, independently of one another, F, Cl, SF5,NCS, or a halogenated alkyl, alkoxy, alkenyl or alkenyloxy radical having up to 5 carbon atoms, Laand Lbare each, independently of one another, H or F, Zaand Zbare each, independently of one another, --COO--, --CH2CH2--, --CH2O--, --OCH2--, --C2F4--, --CF2O--, --OCF2-- or a single bond, and c and d are each, independently of one another, 1 or 2. 15. A compound according to claim 14, wherein at least one of Yaand Ybare each independently F, OCHFCF3,OCF3,OCHF2,OC2F5,OC3F7,OCH=CF2or CF2OCF3. 16. A compound according to claim 14, wherein at least one of Yaand Ybis F or OCF3,Laand Lbare each F, Zaand Zbare each independently a single bond, --CF2O-- or --COO--, and c and d are each 1. 17. A liquid crystal medium according to claim 1, wherein said medium has a nematic phase down to -30° C. and a clearing point above 65° C. 18. A liquid crystal medium according to claim 1, wherein said medium has a birefringence value of ≥0.095. 19. A liquid crystal medium according to claim 1, wherein said medium has a TN threshold below 1.7 V. 20. A liquid crystal medium according to claim 11, wherein Alkenyl is vinyl, CH3CH=CH, CH2=CHC2H4or CH3CH=CHC2H4. 21. A medium according to claim 1, further comprising one or more compounds selected from formulae IX to XV: wherein R0in each case is, independently, alkyl, oxaalkyl, fluoroalkyl or alkenyl, each having up to 9 carbon atoms, X0in each case is, independently, F, Cl, halogenated alkyl or alkoxy having 1 to 6 carbon atoms, or halogenated, alkenyl or alkenyloxy having up to 6 carbon atoms, Y1and Y2are in each case, independently of one another, H or F, and (F) is an optional fluoro substituent. 22. A liquid crystal medium according to claim 21, wherein in the compounds of formulae IX to XV, X0is F, Cl, CF3,OCF3or OCHF2,and R0alkyl, oxaalkyl, alkenyloxy, fluoroalkyl or alkenyl, each having up to 6 carbon atoms. 23. A medium according to claim 1, further comprising one or more compounds selected from formulae DI and/or DII wherein R0in each case is, independently, alkyl, oxaalkyl, fluoroalkyl or alkenyl, each having up to 9 carbon atoms, and X0in each case is, independently, F, Cl, halogenated alkyl or alkoxy having 1 to 6 carbon atoms, or halogenated, alkenyl or alkenyloxy having up to 6 carbon atoms. 24. A medium according to claim 1, further comprising one or more compounds selected from the formula wherein R0in each case is, independently, alkyl, oxaalkyl, fluoroalkyl or alkenyl, each having up to 9 carbon atoms, and X0in each case is, independently, F, Cl, halogenated alkyl or alkoxy having 1 to 6 carbon atoms, or halogenated, alkenyl or alkenyloxy having up to 6 carbon atoms. 25. A medium according to claim 1, further comprising one or more compounds selected from formula E1a, in which R0is alkyl, oxaalkyl, fluoroalkyl or alkenyl, each having up to 9 carbon atoms. 26. A medium according to claim 1, wherein the proportion of compounds of formula IA and/or IB in the mixture as a whole is 11-25% by weight. 27. A medium according to claim 1, wherein the proportion of compounds of formula IA and/or IB in the mixture as a whole is 17-25% by weight. 28. A medium according to claim 1, further comprising one or more compounds selected from the formula formulae XVI to XIX: wherein R0in each case is, independently, alkyl, oxaalkyl, fluoroalkyl or alkenyl, each having up to 9 carbon atoms, X0in each case is, independently, F, Cl, halogenated alkyl or alkoxy having 1 to 6 carbon atoms, or halogenated, alkenyl or alkenyloxy having up to 6 carbon atoms, X0is F or Cl, Y1is H or F, and the 1,4-phenylene rings are optionally substituted by CN, chlorine or fluorine. 29. A medium according to claim 1, wherein the weigh ratio of compounds formula IA and IB to compounds of formula II+III+IV+V+VI+VII+VIII is 1:10 to 10:1.
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