SU833497A1 - Method of producing modified silica - Google Patents
Method of producing modified silica Download PDFInfo
- Publication number
- SU833497A1 SU833497A1 SU792835021A SU2835021A SU833497A1 SU 833497 A1 SU833497 A1 SU 833497A1 SU 792835021 A SU792835021 A SU 792835021A SU 2835021 A SU2835021 A SU 2835021A SU 833497 A1 SU833497 A1 SU 833497A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- isocyanate
- amine
- modified silica
- negievich
- kulik
- Prior art date
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- Silicon Compounds (AREA)
Description
(54) СПОСОБ ПОЛУЧЕНИЯ МОДИФИЦИРОВАННОГО КРЕМНЕЗЕМА избытке по отношению к количеству аэросила , например, диэтил- или триэтиламина при 90-100°С в течение 10-15 мин. Избыток модификатора удал ют вакуумированием . Полноту химической прививки изоцианата контролируют методом ИКС по исчезновению полосы поглощени при 3750 см, принадлежащей колебани м гидроксильных групп. Технологические параметры модифицировани кремнезема сведены в табл. 1, Таблица 1(54) METHOD OF OBTAINING MODIFIED SILICON EXAMPLE in excess of the amount of aerosil, for example, diethyl- or triethylamine at 90-100 ° С for 10-15 minutes. Excess modifier is removed by vacuum. The completeness of the chemical isocyanate grafting is controlled by the X-ray method by the disappearance of the absorption band at 3750 cm, belonging to vibrations of hydroxyl groups. Technological parameters of silica modification are summarized in Table. 1, Table 1
Как видно из табл. 1, полна хемосорбци достигаетс уже при обработке кремнезема толуилендиизоцианатом и триэтиламином в течение 10 мин при 90°С. Полнота хемосорбции выражена в виде процентного содержани гидроксильных групп поверхности , вступивших в реакцию с изоцианатом .As can be seen from the table. 1, complete chemisorption is achieved already by treating the silica with toluene diisocyanate and triethylamine for 10 minutes at 90 ° C. The completeness of chemisorption is expressed as the percentage of surface hydroxyl groups reacted with the isocyanate.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792835021A SU833497A1 (en) | 1979-09-14 | 1979-09-14 | Method of producing modified silica |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792835021A SU833497A1 (en) | 1979-09-14 | 1979-09-14 | Method of producing modified silica |
Publications (1)
Publication Number | Publication Date |
---|---|
SU833497A1 true SU833497A1 (en) | 1981-05-30 |
Family
ID=20857221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU792835021A SU833497A1 (en) | 1979-09-14 | 1979-09-14 | Method of producing modified silica |
Country Status (1)
Country | Link |
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SU (1) | SU833497A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114590002A (en) * | 2022-03-03 | 2022-06-07 | 中塑新材料科技(杭州)有限公司 | High-sealing strong heat-resistant composite film |
-
1979
- 1979-09-14 SU SU792835021A patent/SU833497A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114590002A (en) * | 2022-03-03 | 2022-06-07 | 中塑新材料科技(杭州)有限公司 | High-sealing strong heat-resistant composite film |
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