SU479369A1 - Method of producing latex for making sponge articles - Google Patents
Method of producing latex for making sponge articles Download PDFInfo
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- SU479369A1 SU479369A1 SU61710731A SU710731A SU479369A1 SU 479369 A1 SU479369 A1 SU 479369A1 SU 61710731 A SU61710731 A SU 61710731A SU 710731 A SU710731 A SU 710731A SU 479369 A1 SU479369 A1 SU 479369A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- latex
- producing latex
- making sponge
- products
- sponge articles
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- Polymerisation Methods In General (AREA)
Description
II
Изобретение относитс к промышленности Синтетического каучука.This invention relates to the Synthetic rubber industry.
Известен способ получени латекса дл изготовлени губчатых изделий . Однако изготовление губок из чистого хлоропренового латекса по известному способу тормозилось вследствие их низкой эластической восстанавливаемости , обусловленной малой частотой поперечных св зей между полимерныг .ш цеп ми в вулканизатах полихлоропрена .A known method for producing latex for the manufacture of sponge products. However, the manufacture of sponges from pure chloroprene latex was inhibited by a known method due to their low elastic recoverability, due to the low frequency of cross-links between polymer chains in polychloroprene vulcanizates.
С целью повышени качества ryf34aтых изделий предлагают подвергать полимеризации хлоропрен с небольшими добавками изопрена в присутствии серы с последующим введением ускорителей вулканизации каучука.In order to improve the quality of these products, it is proposed to polymerize chloroprene with small additions of isoprene in the presence of sulfur, followed by the introduction of rubber vulcanization accelerators.
Наличие звеньев изопрена в полимере латекса по предлагаемому способу позвол ет повысить частоту поперечных св зей между звень ми полимера за счет реакции двойных св зей в звень х изопрена структурирующими агентами (как известно, вулканизаци полихлоропрена обуславливаетс наличием лабильного атома хлора у третичного атома углерода,образующегс при сочетании звеньев хлоропрема в положении 1-2 двойные св зи в The presence of isoprene units in the latex polymer according to the proposed method makes it possible to increase the frequency of cross-links between the polymer units due to the reaction of double bonds in the isoprene units by structuring agents (as is known, the vulcanization of polychloroprene is caused by the presence of a labile chlorine atom at the tertiary carbon atom combination of chloroprem links in position 1-2 double bonds in
полимере хлоропрена вл ютс нереакционноспособными вследствие экранирующего действи атома хлора).the chloroprene polymer is unreactive due to the shielding effect of the chlorine atom).
Оптимальна эластическа восстанавливаемость губок достигаетс при применении частично структурированного лтекса введением в полимеризационную шихту структурирующего агента серы и введением ускорителей вулканизации в латекс по окончании процесса полимеризации . Дл достижени необходимой прочности губок на разрыв в качестве инициатора полимеризации примен ют перекись водорода. Дл получени губчатых изделий необходим - латекс с концентрацией сухого вещества 58-60%. Дл создани возможности концентрировани латекса до указанного предела методом сливкообразовани необходим латекс с большой величиной частиц и, следовательно, с пониженной в зкостью . Это достигаетс снижением дозировок эмульгатора, а также введением в исходную полимериз-ационную шихту затравки (в виде готового, не содержащего стабилизатор латекса того же состава),Optimal elasticity of the sponges is achieved by applying partially structured letex by introducing a structurizing agent sulfur into the polymerization mixture and by introducing vulcanization accelerators into the latex after the polymerization process is completed. To achieve the required tensile strength of the sponges, hydrogen peroxide is used as a polymerization initiator. Latex with a dry matter concentration of 58-60% is necessary to obtain spongy products. In order to allow the latex to be concentrated to the indicated limit using a creaming method, a latex with a high particle size and, therefore, with reduced viscosity is necessary. This is achieved by reducing the dosages of the emulsifier, as well as by introducing a seed into the initial polymerization mixture (in the form of a finished, not containing stabilizer latex of the same composition),
Пример 1. Состав полимеризацонной шихты, %:Example 1. The composition of the polymerization mixture,%:
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU61710731A SU479369A1 (en) | 1961-04-14 | 1961-04-14 | Method of producing latex for making sponge articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU61710731A SU479369A1 (en) | 1961-04-14 | 1961-04-14 | Method of producing latex for making sponge articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU479369A1 true SU479369A1 (en) | 1980-10-23 |
Family
ID=20437167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU61710731A SU479369A1 (en) | 1961-04-14 | 1961-04-14 | Method of producing latex for making sponge articles |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU479369A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022102613A1 (en) * | 2020-11-10 | 2022-05-19 | 昭和電工株式会社 | Chloroprene copolymer latex and method for producing same |
-
1961
- 1961-04-14 SU SU61710731A patent/SU479369A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022102613A1 (en) * | 2020-11-10 | 2022-05-19 | 昭和電工株式会社 | Chloroprene copolymer latex and method for producing same |
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