[특허]Reducing concentration of organic materials with substituted cyclodextrin compound in polyester packaging materials

Reducing concentration of organic materials with substituted cyclodextrin compound in polyester packaging materials 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B32B-015/02 C08J-089/00
출원번호	US-0071382 (2005-03-02)
발명자 / 주소	Wood,Willard E. Beaverson,Neil J. Lawonn,Phillip Huang,Xiaoyan
출원인 / 주소	Cellresin Technologies, LLC
대리인 / 주소	Merchant &
인용정보	피인용 횟수 : 0 인용 특허 : 70

초록 ▼

Volatile organic compound or other materials are produced in the thermoplastic manufacture of thermoplastic polyester beverage containers. Such materials can be eluted into beverages such as carbonated beverages, sparkling or still water from the polyester. Such thermoplastic polyester resins can be manufactured with a material that can prevent the formation of, or react with, and absorb volatile by-products during the formation of thermoplastic preforms or containers from the thermoplastic pellet or chip. Further, as the preform is blown into a polyester container, the active materials of the invention prevent the generation of additional undesirable volatile materials. Lastly, the scavenger material can act as a barrier that prevents transport of materials from the exterior of the container into the container contents.

대표청구항 ▼

We claim: 1. A method of making a polyester chip comprising the steps of: (a) forming a liquid comprising an effective amount of a substituted cyclodextrin compound to trap or prevent transport of a material through a polymer layer; (b) introducing the liquid comprising the substituted cyclodextrin into a stream of molten polyester proximate to a mixing means in a process device to form a treated stream; (c) passing the treated stream through an extruder exit orifice forming the polyester chip; and (d) subjecting the polyester chip to solid state polymerization. 2. The method of claim 1 wherein the liquid comprising about 1.0 to 50 weight percent of the substituted cyclodextrin compound. 3. The method of claim 1 wherein the polyester comprises molten polyethylene terephthalate and the mixing means is proximate to an extruder exit orifice. 4. The method of claim 1 wherein mixing means is next adjacent to the extruder exit orifice. 5. The method of claim 1 wherein the liquid comprises an oil and the substituted cyclodextrin compound. 6. The method of claim 1 wherein the polyester comprises at least 60% by weight polyethylene terephthalate units and up to 40% by weight other polymers. 7. The method of claim 1 wherein the polyester comprises at least 60% by weight polyethylene naphthalate units and up to 40% by weight other polymers. 8. The method of claim 1 wherein the cyclodextrin compound has a substituent substantially on at least one--OH group on the-6 position of the glucose moiety in the cyclodextrin. 9. The method of claim 1 wherein the cyclodextrin compound comprises a cyclodextrin 6-O-Methyl ether. 10. The method of claim 1 wherein the cyclodextrin compound comprises a cyclodextrin 6-O Acetyl ester. 11. The method of claim 1 wherein the cyclodextrin compound comprises a degree of substitution of about 0.5 to 1.8 in an amount of about 100 parts by weight to about 1400 parts by weight of the cyclodextrin compound per each one million parts of polyester resin. 12. The method of claim 1 wherein after solid state polymerization, the chip comprises crystallized polyester.

이 특허에 인용된 특허 (70)

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Scott Norman (Stockton-On-Tees GB2) Hepworth Paul (Upper Poppleton GB2), Aldehyde adducts.
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Brodie ; III Vincent (Wilmington DE) Visioli Donna L. (Lower Gwynedd PA), Aldehyde scavenging compositions and methods relating thereto.
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Gose William C. (Kingsport) Hyche Kenneth W. (Kingsport TN), Aqueous additive systems, methods and polymeric particles.
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Wood Willard E. (Arden Hills MN) Beaverson Neil J. (Hugo MN), Barrier material comprising a thermoplastic and a compatible cyclodextrin derivative.
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Wood Willard E. ; Beaverson Neil J., Barrier material comprising a thermoplastic and a compatible cyclodextrin derivative.
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Wood Willard E. ; Beaverson Neil J., Barrier material comprising a thermoplastic and a compatible cyclodextrin derivative.
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Speer Drew Ve ; Morgan Charles Robert ; Blinka Thomas Andrew ; Cotterman Ronald Lee, By-product absorbers for oxygen scavenging systems.
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Bostrom, David O.; Shumake, William K.; Jackson, Paul H., Coated polymeric particles having improved anti-block characteristics, method of making such particles, and apparatus therefor.
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Reducing concentration of organic materials with substituted cyclodextrin compound in polyester packaging materials 원문보기

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