RU2011132568A - METHOD FOR PRODUCING BLOCKED ISOCYANATES - Google Patents
METHOD FOR PRODUCING BLOCKED ISOCYANATES Download PDFInfo
- Publication number
- RU2011132568A RU2011132568A RU2011132568/04A RU2011132568A RU2011132568A RU 2011132568 A RU2011132568 A RU 2011132568A RU 2011132568/04 A RU2011132568/04 A RU 2011132568/04A RU 2011132568 A RU2011132568 A RU 2011132568A RU 2011132568 A RU2011132568 A RU 2011132568A
- Authority
- RU
- Russia
- Prior art keywords
- blocking
- ratio
- blocked isocyanates
- isocyanate
- producing blocked
- Prior art date
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- Polyurethanes Or Polyureas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Способ получения блокированных изоцианатов, включающий операцию взаимодействия ароматических ди- и триизоцианатов с соединениями, содержащими активный атом водорода, отличающийся тем, что в качестве изоцианатного компонента применяют технический продукт - полиизоцианат, представляющий собой жидкую смесь изомеров 4,4`-2,2` и 4,2`-дифенилметандиизоцианата и их гомологов три- и тетраизоцианатов, ароматические кольца которых связаны метиленовыми мостиками, а в качестве блокирующего агента - смесь, состоящую их ε-капролактама (А), метилпиразола (Б) и бензилового спирта(В) в соотношении А:Б:В от 90:9:1 до 5:80:10, при этом блокирование осуществляют перемешиванием расплава реакционной массы при температуре от 60 до 140°С в течение от 40 до 180 мин при соотношении изоцианатного и блокирующего компонентов от 76:24 до 60:40.A method for producing blocked isocyanates, including the operation of reacting aromatic di- and triisocyanates with compounds containing an active hydrogen atom, characterized in that the technical product polyisocyanate, which is a liquid mixture of 4.4`-2.2` isomers, is used as an isocyanate component 4,2`-diphenylmethanediisocyanate and their homologs, tri- and tetraisocyanates, the aromatic rings of which are linked by methylene bridges, and as a blocking agent, a mixture consisting of ε-caprolactam (A), methylpyrazole (B) and benzyl alcohol (C) in a ratio of A: B: C from 90: 9: 1 to 5:80:10, while blocking is carried out by mixing the melt of the reaction mass at a temperature of from 60 to 140 ° C for from 40 to 180 min at a ratio of isocyanate and blocking components from 76:24 to 60:40.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2011132568/04A RU2491273C2 (en) | 2011-08-03 | 2011-08-03 | Method of producing blocked isocyanates |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2011132568/04A RU2491273C2 (en) | 2011-08-03 | 2011-08-03 | Method of producing blocked isocyanates |
Publications (2)
Publication Number | Publication Date |
---|---|
RU2011132568A true RU2011132568A (en) | 2013-02-10 |
RU2491273C2 RU2491273C2 (en) | 2013-08-27 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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RU2011132568/04A RU2491273C2 (en) | 2011-08-03 | 2011-08-03 | Method of producing blocked isocyanates |
Country Status (1)
Country | Link |
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RU (1) | RU2491273C2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA3026456A1 (en) * | 2016-06-03 | 2017-12-07 | Huntsman International Llc | A blocked isocyanate composition |
RU2670233C1 (en) * | 2017-09-12 | 2018-10-19 | Федеральное государственное бюджетное учреждение науки Южный научный центр Российской академии наук | Method for producing microcapsulated epoxy resin curing agent |
RU2669840C1 (en) * | 2017-09-12 | 2018-10-16 | Федеральное государственное бюджетное учреждение науки Южный научный центр Российской академии наук | Method for obtaining single packaging epoxy compositions |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2239643C2 (en) * | 2001-08-13 | 2004-11-10 | Лапицкая Татьяна Валентиновна | Polymer composition |
RU2267501C2 (en) * | 2003-08-26 | 2006-01-10 | Татьяна Валентиновна Лапицкая | Method for preparing epoxy resin hardening agent |
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2011
- 2011-08-03 RU RU2011132568/04A patent/RU2491273C2/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
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RU2491273C2 (en) | 2013-08-27 |
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Date | Code | Title | Description |
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MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20130804 |
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NF4A | Reinstatement of patent |
Effective date: 20150610 |
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MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20170804 |
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NF4A | Reinstatement of patent |
Effective date: 20181113 |
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MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20200804 |