[특허]Carbon dioxide blown polyurethane packaging foam with chemical nucleating agents

Carbon dioxide blown polyurethane packaging foam with chemical nucleating agents 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C08J-009/08 C08G-018/08
출원번호	US-0712876 (1991-06-11)
발명자 / 주소	Hanna Todd A. (Crozier VA) Haley David L. (Chesterfield VA) Watson Stuart L. (Midlothian VA)
출원인 / 주소	E. R. Carpenter Company, Inc. (Richmond VA 02)
인용정보	피인용 횟수 : 15 인용 특허 : 0

초록 ▼

A method of preparing polyurethane packaging foam for dispensing into a container in which an article is present to be packaged for shipping, wherein the temperature of the polyurethane foam being dispensed into the container is reduced, as is the maximum reaction exotherm temperature. The method involves reacting polymeric isocyanate and polyoxyalkylated polyol precursors in the presence of water as the blowing agent for the foam. A nucleating agent is present in at least one of the precursors and is present in an amount sufficient to reduce the dispensing temperature of the foam reaction product but also the exotherm as the reaction continues to completion. Incorporation of a nucleating agent into the isocyanate and polyol resin components results in a carbon dioxide blown polyurethane packaging foam preferably having a density of 0.2 lb./ft.3 to 2.0 lb./ft.3.

대표청구항 ▼

In the method of preparing and dispensing a polyurethane packaging foam comprising reacting polymeric isocyanate and polyoxyalkylated polyol precursors in the presence of water as the blowing agent, the improvement whereby the initial dispensing temperature of the reaction product of the isocyanate and the polyol is reduced and the exotherm of the reaction is also reduced which comprises adding a nucleating agent to at least one of said precursors prior to said reaction, said nucleating agent being present in an amount sufficient to lower the dispensing temperature and reduce the exotherm of the reaction producing the polyurethane, wherein methyl formate is added as said nucleating agent to said polymeric isocyanate precursor in an amount of less than or equal to 1 percent of said polymeric isocyanate precursor and methanol is added as said nucleating agent to said polyoxyalkylated polyol precursor in an amount of less than or equal to 1 percent of said polyoxyalkylated polyol precursor.

이 특허를 인용한 특허 (15)

Handa, Y. Paul, Expanded and extruded biodegradable and reduced emission foams made with methyl formate-based blowing agents.
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Handa, Y. Paul; Francis, Gary A., Expanded and extruded polyolefin foams made with methyl formate-based blowing agents.
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Handa,Yash Paul; Brackman,Joseph A.; Castner,Glenn C.; Zafar,Mohammad, Insulating thermoplastic foams made with methyl formate-based blowing agents.
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Cheung, Yunwa Wilson; Dobreski, David V.; Turner, Richard; Wheeler, Mark; Handa, Y. Paul, Polymer blends of biodegradable or bio-based and synthetic polymers and foams thereof.
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Cheung, Yunwa Wilson; Dobreski, David V.; Turner, Richard; Wheeler, Mark; Handa, Y. Paul, Polymer blends of biodegradable or bio-based and synthetic polymers and foams thereof.
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Mahon William J. ; Zabawa Gerald J. ; Sandner Michael R., Polyol blend, multi-component system for producing polyurethane foam, and foam produced thereby.
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Handa, Y. Paul; Francis, Gary A.; Castner, Glenn C.; Zafar, Mohammad, Reduced-VOC and non-VOC blowing agents for making expanded and extruded thermoplastic foams.
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Handa, Y. Paul; Francis, Gary A.; Castner, Glenn C.; Zafar, Mohammad, Reduced-VOC and non-VOC blowing agents for making expanded and extruded thermoplastic foams.
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Handa, Y. Paul; Francis, Gary A.; Castner, Glenn C.; Zafar, Mohammad, Reduced-VOC and non-VOC blowing agents for making expanded and extruded thermoplastic foams.
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Handa, Y. Paul; Francis, Gary A.; Castner, Glenn C.; Zafar, Mohammad, Reduced-VOC and non-VOC blowing agents for making expanded and extruded thermoplastic foams.
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Kalinowski, Timothy T.; Keske, David G.; Matimba, Victor; Modray, David L.; Schulte, Mark, Rigid foam compositions and method employing methyl formate as a blowing agent.
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Kalinowski, Timothy T.; Keske, David G.; Matimba, Victor; Modray, David L.; Schulte, Mark, Rigid foam compositions and methods employing alkyl alkanoates as a blowing agent.
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Handa,Yash Paul; Francis,Gary A., Thermoplastic foams made with methyl formate-based blowing agents.
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Hrivnak, Jeffrey A., Titanium dioxide nucleating agent systems for foamable polymer compositions.
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Jeffrey A. Hrivnak, Titanium dioxide nucleating agent systems for foamable polymer compositions.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Carbon dioxide blown polyurethane packaging foam with chemical nucleating agents 원문보기

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Carbon dioxide blown polyurethane packaging foam with chemical nucleating agents 원문보기

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이 특허를 인용한 특허 (15)

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