SU178101A1 - - Google Patents
Info
- Publication number
- SU178101A1 SU178101A1 SU928600A SU928600A SU178101A1 SU 178101 A1 SU178101 A1 SU 178101A1 SU 928600 A SU928600 A SU 928600A SU 928600 A SU928600 A SU 928600A SU 178101 A1 SU178101 A1 SU 178101A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- steam
- polyureas
- solvent
- aromatic diamine
- diisocyanate
- Prior art date
Links
- 229920002396 Polyurea Polymers 0.000 description 5
- 239000002904 solvent Substances 0.000 description 4
- 150000004984 aromatic diamines Chemical class 0.000 description 3
- 125000005442 diisocyanate group Chemical group 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N Hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- NAQMVNRVTILPCV-UHFFFAOYSA-N Hexamethylenediamine Chemical class NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 1
- 210000003491 Skin Anatomy 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
Известно получение полимочевины взаимодействием в среде растворител диизоцианатов и N-замещенного ароматического диамина (например, алкилзамещенного) с последующей обработкой реакционной смеси вод ным паром. Физико-механические свойства полимочевин , полученных таким образом, сравнительно низки.It is known to produce polyureas by the interaction of diisocyanates and an N-substituted aromatic diamine (e.g., alkyl substituted) in the solvent medium, followed by treatment of the reaction mixture with steam. The physicomechanical properties of the polyureas thus obtained are relatively low.
Предлагаемый способ заключаетс в том, что диизоцианат подвергают взаимодействию с дицианэтилированным диамином в среде растворител с последующей обработкой известными методами.The proposed method consists in that the diisocyanate is reacted with dicycanoethyl diamine in a solvent medium, followed by treatment with known methods.
Введение в полимочевину дицианэтильного заместител придает полимеру ценные свойства, в частности, более высокую износостойкость и разрывную прочность.The introduction of a dicyanethyl substituent into the polyurea imparts valuable properties to the polymer, in particular, a higher wear resistance and tensile strength.
Пример. 5,0 г дицианэтилированного гексаметилендиамина , 5,6 г гексаметилендиизоцианата в 63 мл ацетона оставл ют сто ть в течение 1 час. Затем растворитель отгон ют паром, полимер отфильтровывают от воды и высушивают в вакууме. Выход около 95- ЮОо/о.Example. 5.0 g of dicyanoethylated hexamethylenediamine, 5.6 g of hexamethylene diisocyanate in 63 ml of acetone are left to stand for 1 hour. Then the solvent is distilled off with steam, the polymer is filtered off from water and dried under vacuum. Output about 95- UOo / o.
Из полученной мочевины изготавливают пленки вальцеванием при 70°С, из которых затем прессуют листы при 40°С и давлении 100 кг/см2.Films are produced from the obtained urea by rolling at 70 ° C, from which sheets are then pressed at 40 ° C and a pressure of 100 kg / cm2.
Механические Предел прочности при раст жении,Mechanical tensile strength at stretching,
200200
кгс/см2kgf / cm2
330330
Разрывное удлинение, /о Explosive lengthening, / about
15 Остаточное удлинение, % 15 Residual elongation,%
0,10 Твердость по , кгс/см 0.10 Hardness, kgf / cm
1,7 Износ по шкурке, мг/м Усталостна прочность, число пере400 гибов1.7 Wear on skin, mg / m Fatigue strength, number over 400 bends
ДиэлектрическиеDielectric
Удельное поверхностное сопротив9 ,2- 10 ление, омSpecific surface resistivity9, 2-10 x, ohm
Удельное объемное сопротивление, Specific volume resistance
1,9-1012 ом см 0,051.9-1012 ohm cm 0.05
Тангенс угла диэлектрических потерьDielectric loss tangent
Диэлектрическа проницаемость при Dielectric constant with
3,8 106 гц3.8 106 Hz
Среднее пробивное напр жение, кв/мл1Average breakdown voltage, kV / ml1
27,227.2
Предмет изобретени Subject invention
Способ получени полимочевины взаимодействием в среде растворител диизоцианата и N-замешемного ароматического диамина с последующей обработкой реакционной смеси вод ным паром, отличаюи ийс тем, что, с целью улучшени механических свойств полимочевины , в качестве N-замещенного ароматического диамина берут дицианэтилнрованный диамин.The method of producing polyureas by reacting the solvent of the diisocyanate and the N-blended aromatic diamine with the subsequent treatment of the reaction mixture with steam, is characterized in that, in order to improve the mechanical properties of the polyurea, it is taken as the N-substituted aromatic diamine.
Publications (1)
Publication Number | Publication Date |
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SU178101A1 true SU178101A1 (en) |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0187330A2 (en) * | 1985-01-08 | 1986-07-16 | Bayer Ag | Stable dispersions of polyureas and/or polyhydrazodicarbonamides in higher molecular weight, at least on hydroxyl group containing hydroxylcompounds, a process for their preparation and their use in the preparation of polyurethane plastics |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0187330A2 (en) * | 1985-01-08 | 1986-07-16 | Bayer Ag | Stable dispersions of polyureas and/or polyhydrazodicarbonamides in higher molecular weight, at least on hydroxyl group containing hydroxylcompounds, a process for their preparation and their use in the preparation of polyurethane plastics |
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