CS274825B2 - Products from hydroxylically cured silica gel with a low mesh density - Google Patents
Products from hydroxylically cured silica gel with a low mesh densityInfo
- Publication number
- CS274825B2 CS274825B2 CS362288A CS362288A CS274825B2 CS 274825 B2 CS274825 B2 CS 274825B2 CS 362288 A CS362288 A CS 362288A CS 362288 A CS362288 A CS 362288A CS 274825 B2 CS274825 B2 CS 274825B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- products
- linking density
- groups
- vulcanizate
- cross
- Prior art date
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The solution concerns products made of hydrosilylationally vulcanized silicon rubber with low cross-linking density obtained by hydrosilylation vulcanisation of mixture composed of polysiloxanes containing vinyl group and methyl(hydrogen)dimethyl siloxane copolymers with molar ratio of vinyl groups to the groups Si-H ranging from 3.2:1 to 1.05:1. It consists in the fact that their surface is partially or completely covered with vulcanizate with higher cross-linking density obtained by hydrosilylation vulcanisation of mixture of polysiloxanes containing vinyl group and methyl(hydrogen)dimethylsiloxane copolymers with molecular ratio of vinyl groups to the groups of Si-H ranging from 1:1.05 to 1:10, where the vulcanizate with lower cross-linking density and the vulcanizate with higher cross-linking density are mutually hydrosilylationally connected. The products contain from 0 to 50 percent of filling agent and/or pigment, to advantage silicon oxide, titanium oxide, zinc oxide, iron oxides or soot, or possibly antioxidant. These products can be applied in places with requirements for high mobility and flexibility of the product connected with requirement of non-adhesiveness of its surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS362288A CS274825B2 (en) | 1988-05-27 | 1988-05-27 | Products from hydroxylically cured silica gel with a low mesh density |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS362288A CS274825B2 (en) | 1988-05-27 | 1988-05-27 | Products from hydroxylically cured silica gel with a low mesh density |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS362288A2 CS362288A2 (en) | 1991-04-11 |
| CS274825B2 true CS274825B2 (en) | 1991-11-12 |
Family
ID=5376815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS362288A CS274825B2 (en) | 1988-05-27 | 1988-05-27 | Products from hydroxylically cured silica gel with a low mesh density |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS274825B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109438995A (en) * | 2018-12-21 | 2019-03-08 | 广州市白云化工实业有限公司 | The high-intensitive add-on type Silica hydrogel and preparation method thereof of hypotonic oil |
-
1988
- 1988-05-27 CS CS362288A patent/CS274825B2/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109438995A (en) * | 2018-12-21 | 2019-03-08 | 广州市白云化工实业有限公司 | The high-intensitive add-on type Silica hydrogel and preparation method thereof of hypotonic oil |
| CN109438995B (en) * | 2018-12-21 | 2021-06-15 | 广州市白云化工实业有限公司 | Low oil-permeability high-strength addition type silicone gel and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CS362288A2 (en) | 1991-04-11 |
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