CN105037751A - Polyisoprene rubber latex preparing technology - Google Patents
Polyisoprene rubber latex preparing technology Download PDFInfo
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- CN105037751A CN105037751A CN201510539680.9A CN201510539680A CN105037751A CN 105037751 A CN105037751 A CN 105037751A CN 201510539680 A CN201510539680 A CN 201510539680A CN 105037751 A CN105037751 A CN 105037751A
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Abstract
The invention belongs to the technical field of chemical rubber and particularly relates to a polyisoprene rubber latex preparing technology. The polyisoprene rubber latex preparing technology includes the specific steps that polyisoprene rubber fluid or dry rubber is mixed with a solvent in proportion and then placed into a stirrer, a proper emulsifying agent is added, and full dissolution is conducted at a proper stirring speed; then, the mixture is placed on a double-planet type high-speed shear stirring machine, and the emulsion process of latex is conducted; finally, solvent removal and concentration are conducted on the latex through extraction, and a latex finished product is obtained. By means of the preparing technology, conversion from polyisoprene rubber fluid or dry rubber to the polyisoprene rubber latex finished product can be achieved, the prepared latex product is even in particle size distribution and good in product stability, and the manufactured glove products are good in tenacity, high in elongation and suitable for being used by crowds allergic to protein.
Description
Technical field
The invention belongs to chemical rubber technical field, be specifically related to a kind of polyisoprene latex preparation technology.
Background technology
Polyisoprene (POLYISOPRENETRANS) is the polymkeric substance of isoprene (2-methyl butadiene).Molecular formula is [CH2CH=C (CH3) CH2] N.It has four kinds of stereoregular structures: wherein 1,3 and 2,4 structures respectively have again complete same and same two kinds of steric isomers.Only there are two kinds of isomer in occurring in nature, i.e. cis-Isosorbide-5-Nitrae polyisoprene (natural rubber, hevea) and trans-Isosorbide-5-Nitrae polyisoprene (gutta-percha, Ba Lata glue).Industrial importantly cis-Isosorbide-5-Nitrae polyisoprene, also known as " natural synthetic rubber " or polyisoprene rubber (IR).
Polyisoprene latex substitutes natural rubber latex to solve the optimal selection producing allergic problem when human body uses, and can produce on all natural latex products production units.Polyisoprene latex, except being used as surgical gloves, condom, also can be used for production gear division dam, physiotherapy belt and catheter etc., also can be used as high-end sizing agent and uses, as being used as the cold seal glue in food product pack.
Polyisoprene preparation technology has melting emulsion process and powder emulsifying method.Namely current polyisoprene latex industrialization product is a kind of artificial latex adopting emulsifying soln legal system standby, and the dry glue of a polyisoprene or glue are raw material exactly, detach and concentrate 4 procedures prepare latex through dissolving, emulsification, solvent.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of polyisoprene latex preparation technology, and it efficiently solves the transformation to polyisoprene latex finished product of polyisoprene glue and dry glue.The latex products even particle size distribution of preparation, product stability is good, makes gloves finished product good toughness elongation high, is applicable to using protein allergy crowd.。
For solving the problems of the technologies described above, the present invention is implemented by the following technical solutions:
A kind of polyisoprene latex preparation technology, comprises the following steps:
By dry for polyisoprene glue and solvent 1:(3.7 ~ 4.8 in mass ratio) ratio mix after put into stirring tank, add the emulsifying agent accounting for Solute mass fraction 4.0%, insulation is also fully stirred, make it to dissolve completely, obtain glue, consoluet glue to be put on the star-like high shear agitation mechanism of duplicate rows with glue and water in mass flux ratio (20 ~ 25): the ratio high speed shear mixing of 1, the pure water that 2:1 put into by latex shear-mixed extruded stirs, through extracting, solvent removal is carried out to latex afterwards, concentrated, finally obtain polyisoprene latex finished product,
Described solvent is one or more in normal hexane, toluene, normal heptane.
Preferably, the mass ratio of the dry glue of described polyisoprene and solvent is 1:(4 ~ 4.8).
Preferably, the mass ratio of the dry glue of described polyisoprene and solvent (normal hexane, toluene, normal heptane) is 1:4.
Preferably, in the star-like high shear agitation mechanism of described duplicate rows, glue and water are 22:1 by mass flux ratio
Preferably, described emulsifying agent is tensio-active agent.
Preferably, described tensio-active agent is one or more in sodium oleate, Sodium dodecylbenzene sulfonate, di-isopropyl sodium naphthalene sulfonate, petroleum sodium sulfonate.
Preferably, described tensio-active agent is sodium oleate.
Preferably, described a kind of polyisoprene latex preparation technology, it comprises following concrete steps:
Stirring tank is put into after the ratio of dry for polyisoprene glue and normal hexane 1:4 in mass ratio being mixed, add the sodium oleate accounting for Solute mass fraction 4.0%, insulation is also fully stirred, make it to dissolve completely, consoluet glue is put into the star-like high shear agitation mechanism of duplicate rows to extrude in the ratio mixing of mass flux ratio 22:1 with glue and water and enters high speed shear, the pure water that 2:1 put into by latex shear-mixed extruded stirs, through extracting, latex is carried out solvent removal, concentrated afterwards, finally obtain polyisoprene latex finished product.
The beneficial effect that the present invention compared with prior art has is:
Polyisoprene glue and dry glue are to the transformation of polyisoprene latex finished product.The latex products even particle size distribution of preparation, product stability is good, makes gloves finished product good toughness elongation high, is applicable to using protein allergy crowd.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment 1:
Stirring tank is put into after the ratio of dry for polyisoprene glue and normal hexane 1:4 in mass ratio being mixed, add the sodium oleate accounting for Solute mass fraction 4.0%, insulation is also fully stirred, make it to dissolve completely, consoluet glue is put into the star-like high shear agitation mechanism of duplicate rows to extrude in the ratio mixing of mass flux ratio 22:1 with glue and water and enters high speed shear pump and shear.The pure water that 2:1 put into by latex shear-mixed extruded stirs.Through extracting, latex is carried out solvent removal, concentrated afterwards, finally obtain polyisoprene latex finished product.
Embodiment 2:
Stirring tank is put into after the ratio of dry for polyisoprene glue and toluene 1:3.7 in mass ratio being mixed, add the Sodium dodecylbenzene sulfonate accounting for Solute mass fraction 4.0%, insulation is also fully stirred, make it to dissolve completely, consoluet glue is put into the star-like high shear agitation mechanism of duplicate rows to extrude in the ratio mixing of mass flux ratio 23:1 with glue and water and enters high speed shear pump and shear.The pure water that 2:1 put into by latex shear-mixed extruded stirs.Through extracting, latex is carried out solvent removal, concentrated afterwards, finally obtain polyisoprene latex finished product.
Embodiment 3:
Stirring tank is put into after the ratio of dry for polyisoprene glue and normal heptane 1:4.8 in mass ratio being mixed, add the di-isopropyl sodium naphthalene sulfonate accounting for Solute mass fraction 3.5%, insulation is also fully stirred, make it to dissolve completely, consoluet glue is put into the star-like high shear agitation mechanism of duplicate rows to extrude in the ratio mixing of mass flux ratio 20:1 with glue and water and enters high speed shear pump and shear.The pure water that 2:1 put into by latex shear-mixed extruded stirs.Through extracting, latex is carried out solvent removal, concentrated afterwards, finally obtain polyisoprene latex finished product.
Embodiment 4:
Stirring tank is put into after the ratio of dry for polyisoprene glue and normal hexane 1:4 in mass ratio being mixed, add the petroleum sodium sulfonate accounting for Solute mass fraction 3.5%, insulation is also fully stirred, make it to dissolve completely, consoluet glue is put into the star-like high shear agitation mechanism of duplicate rows to extrude in the ratio mixing of mass flux ratio 25:1 with glue and 2% sodium hydroxide (can replace water) and enters high speed shear pump and shear.The pure water that 2:1 put into by latex shear-mixed extruded stirs.Through extracting, latex is carried out solvent removal, concentrated afterwards, finally obtain polyisoprene latex finished product.
Claims (8)
1. a polyisoprene latex preparation technology, is characterized in that, comprises the following steps:
By dry for polyisoprene glue and solvent 1:(3.7 ~ 4.8 in mass ratio) ratio mix after put into stirring tank, add the emulsifying agent accounting for Solute mass fraction 4.0%, insulation is also fully stirred, make it to dissolve completely, obtain glue, consoluet glue to be put on the star-like high shear agitation mechanism of duplicate rows with glue and water in mass flux ratio (20 ~ 25): the ratio high speed shear mixing of 1, the pure water that 2:1 put into by latex shear-mixed extruded stirs, through extracting, solvent removal is carried out to latex afterwards, concentrated, finally obtain polyisoprene latex finished product,
Described solvent is one or more in normal hexane, toluene, normal heptane.
2. a kind of polyisoprene latex preparation technology as claimed in claim 1, is characterized in that: the mass ratio of the dry glue of described polyisoprene and solvent is 1:(4 ~ 4.8).
3. a kind of polyisoprene latex preparation technology as claimed in claim 1, is characterized in that: the mass ratio of the dry glue of described polyisoprene and solvent is 1:4.
4. a kind of polyisoprene latex preparation technology as claimed in claim 1, is characterized in that: in the star-like high shear agitation mechanism of described duplicate rows, glue and water are by mass flux ratio 22:1.
5. a kind of polyisoprene latex preparation technology as claimed in claim 1, is characterized in that: described emulsifying agent is tensio-active agent.
6. a kind of polyisoprene latex preparation technology as claimed in claim 5, is characterized in that: described tensio-active agent is one or more in sodium oleate, Sodium dodecylbenzene sulfonate, di-isopropyl sodium naphthalene sulfonate, petroleum sodium sulfonate.
7. a kind of polyisoprene latex preparation technology as claimed in claim 1, is characterized in that: described tensio-active agent is sodium oleate.
8. a kind of polyisoprene latex preparation technology as claimed in claim 1, is characterized in that it comprises following concrete steps:
Stirring tank is put into after the ratio of dry for polyisoprene glue and normal hexane 1:4 in mass ratio being mixed, add the sodium oleate accounting for Solute mass fraction 4.0%, insulation is also fully stirred, make it to dissolve completely, consoluet glue is put into the star-like high shear agitation mechanism of duplicate rows to extrude in the ratio mixing of mass flux ratio 22:1 with glue and water and enters high speed shear, the pure water that 2:1 put into by latex shear-mixed extruded stirs, through extracting, latex is carried out solvent removal, concentrated afterwards, finally obtain polyisoprene latex finished product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510539680.9A CN105037751A (en) | 2015-08-28 | 2015-08-28 | Polyisoprene rubber latex preparing technology |
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| CN201510539680.9A CN105037751A (en) | 2015-08-28 | 2015-08-28 | Polyisoprene rubber latex preparing technology |
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| CN105037751A true CN105037751A (en) | 2015-11-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109453435A (en) * | 2018-11-27 | 2019-03-12 | 广州新诚生物科技有限公司 | A kind of preparation method of catheter-balloon |
| CN113307987A (en) * | 2016-07-25 | 2021-08-27 | 西南科技大学 | Preparation method of brominated butyl rubber latex |
| CN114907627A (en) * | 2022-05-10 | 2022-08-16 | 北京化工大学 | Preparation method of rubber nanocomposite, rubber nanocomposite and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3971746A (en) * | 1974-03-29 | 1976-07-27 | Kuraray Co., Ltd. | Synthetic polyisoprene rubber latex |
| CN102558576A (en) * | 2011-12-09 | 2012-07-11 | 辽宁和运合成橡胶研究院有限公司 | Method for preparing polyisoprene latex |
| CN102702395A (en) * | 2012-06-06 | 2012-10-03 | 辽宁和运合成橡胶研究院有限公司 | Production method of artificial latex |
-
2015
- 2015-08-28 CN CN201510539680.9A patent/CN105037751A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3971746A (en) * | 1974-03-29 | 1976-07-27 | Kuraray Co., Ltd. | Synthetic polyisoprene rubber latex |
| CN102558576A (en) * | 2011-12-09 | 2012-07-11 | 辽宁和运合成橡胶研究院有限公司 | Method for preparing polyisoprene latex |
| CN102702395A (en) * | 2012-06-06 | 2012-10-03 | 辽宁和运合成橡胶研究院有限公司 | Production method of artificial latex |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113307987A (en) * | 2016-07-25 | 2021-08-27 | 西南科技大学 | Preparation method of brominated butyl rubber latex |
| CN109453435A (en) * | 2018-11-27 | 2019-03-12 | 广州新诚生物科技有限公司 | A kind of preparation method of catheter-balloon |
| CN114907627A (en) * | 2022-05-10 | 2022-08-16 | 北京化工大学 | Preparation method of rubber nanocomposite, rubber nanocomposite and application |
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Application publication date: 20151111 |