SU1597365A1 - Method of producing poyurethanes - Google Patents
Method of producing poyurethanes Download PDFInfo
- Publication number
- SU1597365A1 SU1597365A1 SU874354181A SU4354181A SU1597365A1 SU 1597365 A1 SU1597365 A1 SU 1597365A1 SU 874354181 A SU874354181 A SU 874354181A SU 4354181 A SU4354181 A SU 4354181A SU 1597365 A1 SU1597365 A1 SU 1597365A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- elasticity
- temperature range
- mol
- polyurethanes
- prepolymer
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/69—Polymers of conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Изобретение относитс к синтезу полиуретанов (ПУ), пригодных дл использовани в качестве св зующего дл композиционного материала и заливочного компаунда, примен емых в машиностроении, в радиоэлектронной технике, в интервале температур от +100 до -50°С. Изобретение позвол ет повысить эластичность ПУ (до значени ε, равного (758%) при сохранении прочности и низкого значени модул упругости в интервале температур от +100 до -50°С за счет использовани в качестве отвердител форполимера на основе полибутадиендиола с мол.м.2000 и 2,4-толуилендиизоцианата, вз тых в соотношении 1:2, смеси сополимера окиси пропилена и окиси этилена с мол.м.5000 с 3,3-дихлор-4,4-диаминодифенилметаном при их мол рном соотношении от 0,3-0,7 до 0,7-0,3. Отверждение реакционной смеси осуществл ют при 80°С в течение 40 ч. 1 табл.The invention relates to the synthesis of polyurethanes (PU), suitable for use as a binder for a composite material and a casting compound used in mechanical engineering in electronic engineering, in the temperature range from +100 to -50 ° C. The invention makes it possible to increase the elasticity of PU (up to a value of ε equal to (758%), while maintaining the strength and low modulus of elasticity in the temperature range from +100 to -50 ° C due to the use of a prepolymer based on polybutadiene diol mol.m. 2000 and 2,4-toluene diisocyanate, taken in a 1: 2 ratio, of a mixture of a copolymer of propylene oxide and ethylene oxide with mol.m.5000 with 3,3-dichloro-4,4-diaminodiphenylmethane in a molar ratio of 0.3 -0.7 to 0.7-0.3. The reaction mixture was cured at 80 ° C for 40 hours.
Description
Изобретение относитс к области химии высокомолекул рных соединений, в частности к получению па1иуретанов, пригодных дл использовани в качестве св зующего дл композиционного материала и заливочного компаунда, примен емых в машиностроении, в радио- злектронной технике, в интервале температур от (+100) до (-50 ) С.The invention relates to the field of chemistry of high molecular compounds, in particular to the preparation of polyurethane, suitable for use as a binder for a composite material and a casting compound used in mechanical engineering, in radio electronic technology, in the temperature range from (+100) to ( -50) C.
Целью изобретени вл етс повышение эластичности полиуретанов при сохранении прочности и низкого значени модул упругости в интервале температур от (100) до (-50)°С.The aim of the invention is to increase the elasticity of polyurethanes while maintaining strength and low modulus of elasticity in the temperature range from (100) to (-50) ° C.
Используют форполимер с концевыми изоцианатными группами на основе полибутадиендио а с мол.м. 2000 и 2,4-толуипендиизоцианата, вз тых в соотношении 1:2 (СКУ-ДФ-2, ТУ 38-10- 3451-79), содержание NCO-rpynn равно 3,41 моЛо%, сополимер окиси пропилена и окиси этилена с моЛоМ, 5000 (лапрол 5003-2Б-10), а также 3,3 -ди- хлор-4,4 -диаминодифенилметан (Диа- мет X) ,A prepolymer with terminal isocyanate groups based on polybutadienedio a mol.m. 2000 and 2,4-toluipiisocyanate, taken in a 1: 2 ratio (SKU-DF-2, TU 38-10- 3451-79), the content of NCO-rpynn is equal to 3.41 molL%, a copolymer of propylene oxide and ethylene oxide with molol, 5000 (laprol 5003-2B-10), as well as 3,3-dichloro-4,4-diaminodiphenylmethane (Diamet X),
Реакционную смесь готов т следую-- щим образом.The reaction mixture is prepared as follows.
слcl
со with
сwith
GfS CTlGfS CTl
В реактор, снабженный мешалкой, рубашкой, окнами загрузки и выгрузки смесей помещают 100 мае,4, форполиме- ра и при перемешивании прибавл ют рассчитанное количество раствора диа- мета X в Лапроле 5003-2Б-10 (см. таблицу ) . Перемешивают при и остаточном давлении 2-5 мм рт.ст. 30 мин, после чего реакционную массу разлива- ют в подготовленные технологические формы и отверждают 40 ч при In a reactor equipped with a mixer, a jacket, loading and unloading windows for mixtures are placed on 100 May, 4, prepolymer and with stirring the calculated amount of the solution of diamet X in Laprol 5003-2B-10 is added (see table). Stirred with a residual pressure of 2-5 mm Hg. 30 minutes, after which the reaction mass is poured into prepared technological forms and cured for 40 hours at
Физико-механические характеристики эластомеров определ ют на образцах с длиной рабочей части 15 мм при скорости перемещени захватов 500 мм/мин Перед испытани ми образцы эластомеров подвергают вылеживанию при комнатной температуре в течение 14 сут,The physicomechanical characteristics of elastomers are determined on samples with a working section length of 15 mm at a gripping speed of 500 mm / min. Before testing, samples of elastomers are subjected to aging at room temperature for 14 days,
Данные испытаний и технологические характеристики смесей приведены в таблицесTest data and technological characteristics of the mixtures are given in table
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874354181A SU1597365A1 (en) | 1987-12-30 | 1987-12-30 | Method of producing poyurethanes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874354181A SU1597365A1 (en) | 1987-12-30 | 1987-12-30 | Method of producing poyurethanes |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1597365A1 true SU1597365A1 (en) | 1990-10-07 |
Family
ID=21346611
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU874354181A SU1597365A1 (en) | 1987-12-30 | 1987-12-30 | Method of producing poyurethanes |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1597365A1 (en) |
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1987
- 1987-12-30 SU SU874354181A patent/SU1597365A1/en active
Non-Patent Citations (1)
Title |
---|
Простые и сложные олигоэфиры. Каталог, Черкассы, 1981. Авторское свидетельство СССР № 615095, кл. С 08 G 18/32, 1976, Шмидт Я.М., Кельцева О.Б,, Синтез и исследование свойств некоторых полимочевин и полиуретанмочевино Синтез и физикохими полимеров, Киев, 1968, Со 24-31 о Авторское свидетельство СССР № 794024, кло С 08 G 18/32, 1979, * |
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