SU382652A1 - Method of producing polyurethane - Google Patents
Method of producing polyurethaneInfo
- Publication number
- SU382652A1 SU382652A1 SU1453572A SU1453572A SU382652A1 SU 382652 A1 SU382652 A1 SU 382652A1 SU 1453572 A SU1453572 A SU 1453572A SU 1453572 A SU1453572 A SU 1453572A SU 382652 A1 SU382652 A1 SU 382652A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- polyurethane
- producing polyurethane
- groups
- hydroxyl groups
- chain
- Prior art date
Links
Landscapes
- Polyurethanes Or Polyureas (AREA)
Description
1one
Известен способ получени полиуретанмочевин путем взаимодействи полиуретаиового форполимера с избытком вторичного диамина с последующей обработкой -полученного продукта эквимолекул рным количеством диизоцианата .A known method for the preparation of polyurethane urea by reacting a polyurethane prepolymer with an excess of secondary diamine followed by treating the resulting product with an equimolar amount of diisocyanate.
С целью получени полиуретана мочевин со свободными гндроксильными группами в Цепи, предложено в качестве форнолимера использовать полиуретанэпоксид с концевыми эпоксидными группами.In order to obtain urea polyurethane with free hydroxyl groups in the chain, it has been proposed to use polyurethane epoxide with epoxy-terminated groups as a fornolimer.
CHfCH-R-CH- HN- R-NH-HN-R ч X /IIICHfCH-R-CH-HN-R-NH-HN-R h X / III
p0R R Rp0R R R
Синтез осуществл ют при атмосферном давлении., при температуре не выше 80°С, в растворител х.The synthesis is carried out at atmospheric pressure., At a temperature not higher than 80 ° C, in solvents.
В качестве изоцианатных предполимеров 15 используют продукты реакции простых и сложных полиэфиров и диизоцианатов.As isocyanate prepolymers 15, the reaction products of polyethers and polyesters and diisocyanates are used.
В качестве диаминов используют алифатические , ароматические и циклические вторичные диамины. Дл увеличени содержани 20 ГИДРОКСИЛЬНЫХ групп в цепи могут быть использованы гидроксилсодержащие вторичные диамИНЫ.Aliphatic, aromatic and cyclic secondary diamines are used as diamines. To increase the content of 20 HYDROXYL groups in the chain, hydroxyl-containing secondary diamines can be used.
Полученные полиуретанмочевины со свободными гидроксильными группами в цепи 25The resulting polyurethane ureas with free hydroxyl groups in chain 25
Гидроксильные груп-пы ввод т в полимерную цепь путем реа-кции полиуретанэпоксидов с концевыми эпоксидными группами с избытком вторичного диамина с последующей обработкой полученного продукта со свободными аминогруппами эквимолекул рным количеством динзоцианатсодержащего продукта.Hydroxyl groups are introduced into the polymer chain by reacting polyurethane epoxides with terminal epoxy groups with an excess of secondary diamine followed by treating the resulting product with free amino groups with an equimolecular amount of dinosocyanate-containing product.
Реакци образовани гидроксильных групп идет по схеме:The reaction of formation of hydroxyl groups follows the scheme:
могут быть использованы дл получени разнообразных покрытий.can be used to make a variety of coatings.
Пример 1.Example 1
Перва стади .The first stage.
К 34,1 г 50,7%-ного раствора уретанэпоксида с концевыми эпоксидными группамИ в хлороформе (уретанэпоксид на основе глицидола ,и изоцианатного предполнмера из дифенилметандиизоциаиата и полноксипропиленгликол мол. вес 1000; содержание концевых эпоксидных грунп 2,1%; содержание концевых NCO-rpynn 0,22%) при перемещивании при добавл ют 248 г К ,Ы-диоксипроиилэтилендиамина .To 34.1 g of a 50.7% urethane epoxy solution with terminal epoxy groups in chloroform (glycidol-based urethane epoxide, and an isocyanate predpolmer of diphenylmethane diisocyanate and poloxypropylene glycol, mol. rpynn 0.22%) while being transported, 248 g of K, N-dioxypropiylethylenediamine are added.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1453572A SU382652A1 (en) | 1970-07-06 | 1970-07-06 | Method of producing polyurethane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1453572A SU382652A1 (en) | 1970-07-06 | 1970-07-06 | Method of producing polyurethane |
Publications (1)
Publication Number | Publication Date |
---|---|
SU382652A1 true SU382652A1 (en) | 1973-05-25 |
Family
ID=20454543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1453572A SU382652A1 (en) | 1970-07-06 | 1970-07-06 | Method of producing polyurethane |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU382652A1 (en) |
-
1970
- 1970-07-06 SU SU1453572A patent/SU382652A1/en active
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