CN109280117A - The synthetic method of liquid polyisoprene rubber - Google Patents
The synthetic method of liquid polyisoprene rubber Download PDFInfo
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- CN109280117A CN109280117A CN201811130440.3A CN201811130440A CN109280117A CN 109280117 A CN109280117 A CN 109280117A CN 201811130440 A CN201811130440 A CN 201811130440A CN 109280117 A CN109280117 A CN 109280117A
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- added
- isoprene
- solution
- polyisoprene rubber
- liquid
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F136/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F136/02—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F136/04—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F136/08—Isoprene
Abstract
The invention discloses a kind of synthetic methods of liquid polyisoprene rubber, under vacuum drying and nitrogen charging gas shielded, color developing agent pyridine is added into the xylene solution of isoprene, reaction temperature is preheated in water-bath, then n-BuLi catalyst is added dropwise, until polymer fluid shows light yellow, the xylene solution of prepared isoprene is added, initiator and telogen again, polymerization reaction is carried out under 30 degrees Celsius, it is terminated after reaction 1h with ethanol solution, the BHT solution of the dimethylbenzene of isoprene quality 2% is added, polymer fluid in polymerization bottle is poured into the desiccation culture ware of weighing, it is put into draught cupboard and dries, until without the liquid obviously flowed, drying to constant weight in not higher than 60 degrees Celsius vacuum ovens.The invention has the benefit that preparing liquid polyisoprene rubber using the method that anion adjusts polymerization, high income, the stabilization of product rubber is well.
Description
Technical field
The present invention relates to liquid rubber synthesis technical field, the synthesis side of specifically a kind of liquid polyisoprene rubber
Method.
Background technique
Liquid rubber is a kind of flowable material at room temperature, but can form crosslinking after being chemically reacted with curing agent
Structure.The mechanical property of liquid rubber is identical as the mechanical property of the vulcanized rubber as made from solid raw rubber the dry glue the case where
Under, before obtaining final product, it is necessary to by with various compounding agents be kneaded, molding rubber compound (rubber compound forming) and at
The multiple working procedures such as the vulcanization of type glue, can a large amount of energy of work in-process consuming.And liquid rubber can be by will be with various cooperations
The mixture of agent mixing carries out heating and generates cross-linking reaction and obtain final products.That is, liquid rubber has processing
It is easy, the few advantage of processing energy consumption.In addition, liquid rubber can be flowed into small portion under the liquid condition mixed with compounding agent
Sulfidization molding is carried out in part or small gap.
Summary of the invention
The object of the present invention is to provide a kind of synthetic methods of liquid polyisoprene rubber.
Present invention technical solution used for the above purpose is: the synthetic method of liquid polyisoprene rubber,
Under vacuum drying and nitrogen charging gas shielded, color developing agent pyridine is added into the xylene solution of isoprene, is preheated in water-bath
To reaction temperature, n-BuLi catalyst is then added dropwise, until polymer fluid shows light yellow, prepared isoprene is added
Xylene solution, then initiator and telogen carry out polymerization reaction under 30 degrees Celsius, are terminated after reacting 1h with ethanol solution,
The BHT solution of the dimethylbenzene of isoprene quality 2% is added, the polymer fluid in polymerization bottle is poured into the desiccation culture ware of weighing,
It is put into draught cupboard and dries, until without the liquid obviously flowed, be dried to perseverance being not higher than in 60 degrees Celsius of vacuum ovens
Weight.
The initiator is azodiisobutyronitrile, azobisisoheptonitrile.
The telogen is mercaptoethanol, polyacrylonitrile, polystyrene or polyvinyl chloride.
The invention has the benefit that liquid polyisoprene rubber is prepared using the method that anion adjusts polymerization,
High income, the stabilization of product rubber is well.
Specific embodiment
Explanation is further explained to the present invention combined with specific embodiments below.
Embodiment 1
Under the synthetic method of liquid polyisoprene rubber, vacuum drying and nitrogen charging gas shielded, to the dimethylbenzene of isoprene
Color developing agent pyridine is added in solution, reaction temperature is preheated in water-bath, n-BuLi catalyst is then added dropwise, until polymerization
Liquid shows light yellow, and the xylene solution of prepared isoprene, then initiator and telogen is added, carries out under 30 degrees Celsius
Polymerization reaction is terminated after reacting 1h with ethanol solution, the BHT solution of the dimethylbenzene of isoprene quality 2% is added, by polymerization bottle
Interior polymer fluid pours into the desiccation culture ware of weighing, is put into draught cupboard and dries, until without the liquid obviously flowed, not
Drying to constant weight in higher than 60 degrees Celsius vacuum ovens.
The initiator is azodiisobutyronitrile.
The telogen is mercaptoethanol.
Embodiment 2
Under the synthetic method of liquid polyisoprene rubber, vacuum drying and nitrogen charging gas shielded, to the dimethylbenzene of isoprene
Color developing agent pyridine is added in solution, reaction temperature is preheated in water-bath, n-BuLi catalyst is then added dropwise, until polymerization
Liquid shows light yellow, and the xylene solution of prepared isoprene, then initiator and telogen is added, carries out under 30 degrees Celsius
Polymerization reaction is terminated after reacting 1h with ethanol solution, the BHT solution of the dimethylbenzene of isoprene quality 2% is added, by polymerization bottle
Interior polymer fluid pours into the desiccation culture ware of weighing, is put into draught cupboard and dries, until without the liquid obviously flowed, not
Drying to constant weight in higher than 60 degrees Celsius vacuum ovens.
The initiator is azobisisoheptonitrile.
The telogen is polyacrylonitrile.
Embodiment 3
Under the synthetic method of liquid polyisoprene rubber, vacuum drying and nitrogen charging gas shielded, to the dimethylbenzene of isoprene
Color developing agent pyridine is added in solution, reaction temperature is preheated in water-bath, n-BuLi catalyst is then added dropwise, until polymerization
Liquid shows light yellow, and the xylene solution of prepared isoprene, then initiator and telogen is added, carries out under 30 degrees Celsius
Polymerization reaction is terminated after reacting 1h with ethanol solution, the BHT solution of the dimethylbenzene of isoprene quality 2% is added, by polymerization bottle
Interior polymer fluid pours into the desiccation culture ware of weighing, is put into draught cupboard and dries, until without the liquid obviously flowed, not
Drying to constant weight in higher than 60 degrees Celsius vacuum ovens.
The initiator is azobisisoheptonitrile.
The telogen is polyvinyl chloride.
Embodiment 4
Under the synthetic method of liquid polyisoprene rubber, vacuum drying and nitrogen charging gas shielded, to the dimethylbenzene of isoprene
Color developing agent pyridine is added in solution, reaction temperature is preheated in water-bath, n-BuLi catalyst is then added dropwise, until polymerization
Liquid shows light yellow, and the xylene solution of prepared isoprene, then initiator and telogen is added, carries out under 30 degrees Celsius
Polymerization reaction is terminated after reacting 1h with ethanol solution, the BHT solution of the dimethylbenzene of isoprene quality 2% is added, by polymerization bottle
Interior polymer fluid pours into the desiccation culture ware of weighing, is put into draught cupboard and dries, until without the liquid obviously flowed, not
Drying to constant weight in higher than 60 degrees Celsius vacuum ovens.
The initiator is azodiisobutyronitrile.
The telogen is polystyrene.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art within the technical scope of the present disclosure, according to the technique and scheme of the present invention and its
Design is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (3)
1. the synthetic method of liquid polyisoprene rubber, which is characterized in that under vacuum drying and nitrogen charging gas shielded, to isoamyl
Color developing agent pyridine is added in the xylene solution of diene, reaction temperature is preheated in water-bath, n-BuLi is then added dropwise and urges
The xylene solution of prepared isoprene, then initiator and telogen is added until polymer fluid shows light yellow in agent,
Polymerization reaction is carried out under 30 degrees Celsius, is terminated after reacting 1h with ethanol solution, and the BHT of the dimethylbenzene of isoprene quality 2% is added
Polymer fluid in polymerization bottle is poured into the desiccation culture ware of weighing, is put into draught cupboard and dries by solution, until what nothing obviously flowed
Until liquid, drying to constant weight in not higher than 60 degrees Celsius vacuum ovens.
2. the synthetic method of liquid polyisoprene rubber according to claim 1, which is characterized in that the initiator is
Azodiisobutyronitrile, azobisisoheptonitrile.
3. the synthetic method of liquid polyisoprene rubber according to claim 1, which is characterized in that the telogen is
Mercaptoethanol, polyacrylonitrile, polystyrene or polyvinyl chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811130440.3A CN109280117A (en) | 2018-09-27 | 2018-09-27 | The synthetic method of liquid polyisoprene rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811130440.3A CN109280117A (en) | 2018-09-27 | 2018-09-27 | The synthetic method of liquid polyisoprene rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109280117A true CN109280117A (en) | 2019-01-29 |
Family
ID=65182464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811130440.3A Withdrawn CN109280117A (en) | 2018-09-27 | 2018-09-27 | The synthetic method of liquid polyisoprene rubber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109280117A (en) |
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2018
- 2018-09-27 CN CN201811130440.3A patent/CN109280117A/en not_active Withdrawn
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190129 |