RU98116663A - OBTAINING POLYOLS USING A DOUBLE METALLOCYANIDE CATALYST BY CONTINUOUS ADDING OF A STARTER - Google Patents

OBTAINING POLYOLS USING A DOUBLE METALLOCYANIDE CATALYST BY CONTINUOUS ADDING OF A STARTER

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Publication number
RU98116663A
RU98116663A RU98116663/04A RU98116663A RU98116663A RU 98116663 A RU98116663 A RU 98116663A RU 98116663/04 A RU98116663/04 A RU 98116663/04A RU 98116663 A RU98116663 A RU 98116663A RU 98116663 A RU98116663 A RU 98116663A
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Russia
Prior art keywords
molecular weight
starter
polyol
polyether polyol
catalyst
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RU98116663/04A
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Russian (ru)
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RU2191784C2 (en
Inventor
Хосе Пазос
Original Assignee
Арко Кемикал Текноледжи, Л.П.
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Priority claimed from US08/597,781 external-priority patent/US5777177A/en
Application filed by Арко Кемикал Текноледжи, Л.П. filed Critical Арко Кемикал Текноледжи, Л.П.
Publication of RU98116663A publication Critical patent/RU98116663A/en
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Publication of RU2191784C2 publication Critical patent/RU2191784C2/en

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Claims (16)

1. Способ, включающий получение полиэфирполиола посредством полимеризации эпоксида в присутствии двойного металлоцианидного (DMC) катализатора, непрерывно добавляемого стартера (Sс), и факультативно, исходно загруженного стартера (Si), где Sc включает, как минимум, около 2 экв.% от общего объема использованного стартера, и где эпоксид и Sc непрерывно добавляются в реактор в процессе полимеризации.1. A method comprising producing a polyester polyol by polymerizing an epoxide in the presence of a double metal cyanide (DMC) catalyst, a continuously added starter (S c ), and optionally, an initially charged starter (S i ), where S c includes at least about 2 equiv. % of the total amount of starter used, and where epoxide and S c are continuously added to the reactor during the polymerization. 2. Способ по п. 1, отличающийся тем, что эпоксид выбирают из числа этиленоксида, пропиленоксида, бутиленоксидов и их смесей. 2. The method according to p. 1, characterized in that the epoxide is selected from among ethylene oxide, propylene oxide, butylene oxides and mixtures thereof. 3. Способ по п. 1 или 2, отличающийся тем, что DMC катализатором является катализатор на основе цинка гексацианокобальтата. 3. The method according to p. 1 or 2, characterized in that the DMC catalyst is a catalyst based on zinc hexacyanocobaltate. 4. Способ по п. 3, отличающийся тем, что DMC катализатором является комплексный катализатор на основе цинка гексацианокобальтата/третбутилового спирта. 4. The method according to p. 3, characterized in that the DMC catalyst is a complex catalyst based on zinc hexacyanocobaltate / tert-butyl alcohol. 5. Способ по любому из предшествующих пп. 1-4, отличающийся тем, что в состав полученного полиэфирполиола входит уменьшенное количество полиоловой хвостовой фракции высокой молекулярной массы, по сравнению с полиэфирполиолом, полученным без непрерывного добавления стартера. 5. The method according to any one of the preceding paragraphs. 1-4, characterized in that the composition of the obtained polyether polyol includes a reduced amount of polyol tail fraction of high molecular weight, compared with a polyether polyol obtained without continuous addition of a starter. 6. Способ по п. 5, отличающийся тем, что в состав Sc входит, приблизительно, 2 - 10% от общего объема стартера.6. The method according to p. 5, characterized in that the composition of S c includes approximately 2 to 10% of the total starter volume. 7. Способ по любому из предшествующих пунктов, отличающийся тем, что Sc выбирают из воды и полиолов низкой молекулярной массы.7. The method according to any one of the preceding paragraphs, characterized in that S c selected from water and polyols of low molecular weight. 8. Способ по п. 7, отличающийся тем, что Sc представляет собой полиол низкой молекулярной массы, выбираемый из глицерина, триметилолпропана, пропиленгликоля, дипропиленгликоля и трипропиленгликоля.8. The method according to p. 7, characterized in that S c is a low molecular weight polyol selected from glycerol, trimethylolpropane, propylene glycol, dipropylene glycol and tripropylene glycol. 9. Способ по любому из предшествующих пунктов, отличающийся тем, что Si включает полиоловый промежуточный продукт, имеющий среднее число гидроксильных функциональных групп, приблизительно, 2 - 8, гидроксильное число в пределах, приблизительно, 28 - 560 мг КОН/г и среднечисленную молекулярную массу в пределах, приблизительно, 400 - 4000.9. The method according to any one of the preceding paragraphs, characterized in that S i includes a polyol intermediate product having an average number of hydroxyl functional groups of about 2-8, a hydroxyl number in the range of about 28-560 mg KOH / g and a number average molecular weight mass in the range of approximately 400 to 4000. 10. Способ по любому из предшествующих пунктов, отличающийся тем, что в состав Si входит остаток полиэфирполиола, полученного в процессе предшествующей полимеризации.10. The method according to any one of the preceding paragraphs, characterized in that the composition of S i includes the remainder of the polyether polyol obtained in the previous polymerization. 11. Полиэфирполиол, полученный способом, соответствующим любому из предшествующих пунктов. 11. Polyether polyol obtained by the method according to any of the preceding paragraphs. 12. Полиэфирполиол, полученный посредством DMC катализа, в состав которого входит количество хвостовой фракции высокой молекулярной массы, меньшее, приблизительно, чем у ррm, где у = Рzx2, где х - среднечисленная молекулярная масса полиэфирполиола, деленная на 1000, Рz имеет значение в пределах, приблизительно, 30 - 40, где хвостовая фракция имеет среднечисленную молекулярную массу, приблизительно, более 100000, судя по результатам измерений, выполненных средствами гель-проникающей хроматографии с использованием испарительного детектора рассеяния света и полистироловых стандартов.12. The polyether polyol obtained by DMC catalysis, which includes the amount of tail fraction of high molecular weight, less than approximately ppm, where y = P z x 2 , where x is the number average molecular weight of the polyether polyol divided by 1000, P z has a value in the range of approximately 30-40, where the tail fraction has a number average molecular weight of approximately more than 100,000, judging by the results of measurements performed by gel permeation chromatography using an evaporative scattering detector veto and polystyrene standards. 13. Полиэфирполиол, полученный посредством DMC катализа, который проходит критическое испытание на вспенивание, описание которого представлено в настоящей заявке. 13. Polyester polyol obtained by DMC catalysis, which is undergoing a critical foaming test, the description of which is presented in this application. 14. Полиэфирполиол по п. 11, 12 либо 13, имеющий гидроксильное число в пределах, приблизительно, 50 - 60 мг КОН/г и включающий, приблизительно, менее 300 ppm полиоловой хвостовой фракции высокой молекулярной массы. 14. The polyether polyol according to claim 11, 12 or 13, having a hydroxyl number in the range of about 50-60 mg KOH / g and comprising about less than 300 ppm of high molecular weight polyol tail fraction. 15. Полиуретан, полученный из полиэфирполиола по любому из пп. 11-14. 15. Polyurethane obtained from polyester polyol according to any one of paragraphs. 11-14. 16. Полиуретан по п. 15 в форме пены. 16. The polyurethane according to claim 15 in the form of a foam.
RU98116663/04A 1996-02-07 1997-02-01 Production of polyols by the aid of double metal cyanide catalyst by means of continuously adding starting agent RU2191784C2 (en)

Applications Claiming Priority (2)

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US08/597,781 US5777177A (en) 1996-02-07 1996-02-07 Preparation of double metal cyanide-catalyzed polyols by continuous addition of starter
US08/597,781 1996-02-07

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AR (1) AR005711A1 (en)
AU (1) AU720298B2 (en)
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CA (1) CA2245563C (en)
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ES (1) ES2158490T5 (en)
ID (1) ID15891A (en)
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