[특허]Prepolymers

Prepolymers 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C07C-271/28 C07C-271/26 C08G-018/12 C08G-018/10
출원번호	US-0786064 (1997-01-21)
우선권정보	GB-0026709 (1991-12-17); GB-0029710 (1991-12-17)
발명자 / 주소	Geert Bleys BE
출원인 / 주소	Imperial Chemical Industries PLC GB
대리인 / 주소	Pillsbury Winthrop LLP
인용정보	피인용 횟수 : 10 인용 특허 : 22

초록 ▼

A prepolymer is provided having an NCO value of 5-30% by weight which is the reaction product obtained by reacting an excessive amount of a diphenylmethane diisocyanate containing at least 85% by weight of 4,4'-diphenylmethane diisocyanate or a variant thereof with a polyol composition comprising at least one poly(oxyethylene-oxyalkylene) polyol having an average nominal hydroxyl functionality of 2 to 6, an average hydroxyl equivalent weight of from 1000 to 3000 and an average oxyethylene content of from 50 to 85% by weight.

대표청구항 ▼

1. A prepolymer having an NCO value of 5 to 11.5% by weight, said prepolymer being obtained by reacting:(1) a stoichiometrically excessive amount of (i) a diphenylmethane diisocyanate comprising at least 95% by weight of 4,4'-diphenylmethane diisocyanate; or (ii) a diphenylmethane diisocyanate variant, derived from a polyisocyanate composition having 4,4'-diphenylmethane diisocyanate in an amount of at least 95% by weight of the polyisocyanate composition, said variant being selected from the group consisting of liquid products obtained by introducing uretonimine, and/or carbodiimide groups into said polyisocyanate composition, and/or products obtained by reacting said polyisocyanate composition with one or more polyols, or mixtures thereof; with (2) a polyol composition comprising: (a) from 85 to 100% by weight of at least one polyoxyalkylene polyol containing oxyethylene moieties and having an average nominal hydroxyl functionality of from 2 to 6, an average hydroxyl equivalent weight of from 1000 to 3000 and an average oxyethylene content of from 50 to 85% by weight; and (b) from 0 to 15% by weight of one or more polyols other than said at least one polyoxyalkylene polyol.

이 특허에 인용된 특허 (22)

Guthrie, James L., Flexible polyurethane foam based on MDI.
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Guthrie, James L., Flexible polyurethane foam based on MDI.
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Murch Robert M. (Brinklow MD) Wood Louis L. (Rockville MD), Flexible polyurethane foams from polymethylene polyphenyl isocyanate containing prepolymers.
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Elwell Richard J. (Terneuzen NLX) Sewell Robert A. (Terneuzen NLX) Lidy Werner A. (Terneuzen NLX) Thoen Johan A. (Terneuzen NLX), Isocyanate-terminated prepolymer and polyurethane foam prepared therefrom.
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Hughes Jeffrey (Worsley GB2) Keane Kevin E. (Middleton GB2), Liquid polyisocyanate compositions.
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Muller Louis (Ottenburg BEX) Pham Tu (Grez-Doiceau BEX) Verhelst Gabriel (Herent BEX), Manufacture of polymeric foams.
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Yukuta Toshio (Yokohama JPX) Yagura Kazuo (Yokohama JPX) Fuchigami Nobuhisa (Yokohama JPX), Method of producing flexible reticulated polyether polyurethane foams.
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Spitzer Martin (Ehrenkirchen-Norsingen DEX), Polyol components for the production of polyurethane mouldings.
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Tane Kouichi (Ashikaga JPX) Motojima Katsuya (Ashikaga JPX) Sawachika Yasumasa (Ashikaga JPX) Oda Tetsuya (Wako JPX) Sakaguchi Yoshio (Wako JPX), Polyurethane foam for cushioning materials.
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Bleys Gerhard (Heverlee BEX) Neyens Viviane G. J. (Scherpenheuvel BEX), Polyurethane foams.
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Helsemans Stefan E. L. (Zellik BEX) Bleys Gerhard (Heverlee BEX), Polyurethane foams.
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Lutter Heinz-Dieter (Neckargemuend DEX) Hinz Werner (Frankenthal DEX) Decker Walter (Ludwigshafen DEX) Leppkes Reinhard (Bobenheim-Roxheim DEX) Reich Erhard (Damme DEX) Peters Reinhard (Munich DEX) H, Preparation of flexible polyurethane foams having low compressive strength and block polyoxypropylenepolyoxyethylenepoly.
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Bleys Gerhard J. (Heverlee BEX), Process for making flexible foams.
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Bleys Gerhard J. (Heverlee BEX) Gerber Dirk (Grimbergen BEX) Neyens Vivane G. J. (Scherpenheuvel BEX), Process for making flexible foams.
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De Witte Mireille B. A. (Gent BEX), Process for preparing a flexible polyurethane foam.
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Yamamoto Masaki (Kakogawa JPX) Azuma Ichiro (Kakogawa JPX), Process for preparing non-yellowing integral-skinned polyurethane foam using a polyol having a functionality of 4 to 8.
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Broos Rene (Bornem BEX) Paap Frans (Hillegom NLX) Maccari Bruno (Carpi ITX), Process for preparing polyurethane elastomer from a soft-segment isocyanate-terminated prepolymer.
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Gansen Peter (Cologne DEX) Wolfgramm Rudi (Leverkusen DEX) Wolf Klaus D. (Cologne PA DEX) Lindsey John J. (Pittsburgh PA), Process for the production of cold-setting flexible polyurethane foams with excellent damping properties.
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Consoli Salvatore (Venezia-Mestre ITX) Galati Franco (Melilli (Siracusa) ITX), Process for the production of flexible polyurethane foams.
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Augustin Thomas (Cologne DEX) Schpel Dietmar (Cologne DEX) Nowak Peter (Dormagen DEX), Process for the removal of surface-distributed hydrocarbons, in particular oil residues.
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Yukuta Toshio (Yokohama JPX) Yagura Kazuo (Yokohama JPX) Fuchigami Nobuhisa (Yokohama JPX), Safety fuel tank containing reticulated polyurethane foam mixture of poly(oxypropylene-(oxyethylene)polyetherpolyols.
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Wiltz ; Jr. Eugene P. (Lake Jackson) Saavedra Jose V. (Lake Jackson TX) Rajangam Gautam D. (Guilford CT), Solvent resistant polyetherpolyurethane products.
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이 특허를 인용한 특허 (10)

Dounis, Dimitrios V.; Beard, Dwayne Lewis; McLaughlin, Camden Eugene; Fair, Kimberly R., Conventional flexible polyurethane foam using MDI.
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Milbodker, Michael T; Wilson, Jeffrey A; Arcangeli, Robert M, Devices and methods for spine repair.
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Romes, Gary E.; Crostic, Jr., William H., Elastomeric foam product.
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Dounis, Dimitrios V.; Beard, Dwayne Lewis; McLaughlin, Camden Eugene; Fair, Kimberly R., High resilience flexible polyurethane foam using MDI.
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Milbocker, Michael T., In situ bonds.
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Milbocker, Michael T., In situ bonds.
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Molbocker, Michael T., In situ bonds.
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Freeland, Gerard Scott; Doyle, James E., Liquid stable MDI prepolymers and liquid stable curative systems suitable for room temperature casting which yield high performance urethane elastomers.
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Freeland, Gerard Scott; Doyle, James E., Liquid stable MDI prepolymers and liquid stable curative systems suitable for room temperature casting which yield high performance urethane elastomers.
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Bleys,Gerhard Jozef; Huygens,Eric; Leenslag,Jan Willem; Moureau,Herman Eugene Germain, Process for preparing a flexible polyurethane foam.
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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

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Prepolymers 원문보기