CN102093512A - Preparation method of resin for improving cold flow property of middle pad - Google Patents
Preparation method of resin for improving cold flow property of middle pad Download PDFInfo
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- CN102093512A CN102093512A CN200910255636XA CN200910255636A CN102093512A CN 102093512 A CN102093512 A CN 102093512A CN 200910255636X A CN200910255636X A CN 200910255636XA CN 200910255636 A CN200910255636 A CN 200910255636A CN 102093512 A CN102093512 A CN 102093512A
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Abstract
The invention discloses a novel pasty high polymer adhesive system with cold flow property. The resin is applied to the preparation of a 'middle pad' to improve the cold flow property and the viscidity of the middle pad, realizes good bonding of a tire body and a tire surface without spraying of a rubber paste, has no influence on the vulcanization of the middle pad in the vulcanization process of a tire under repair, enhances the cold flow property, the self-adhesion and the mutual viscosity of the 'middle pad' and enhances the interior quality of the tire under repair. The method comprises the following steps of: firstly, performing dication catalysis low temperature polymerization by using a fraction rich in styrene-indene to obtain a mobile pasty system; reacting an octyl phenol resin with rare earth chloride and the like in the presence of a solvent to obtain a dipolar resin system; and enabling the two systems to undergo a medium-temperature high-pressure reaction to obtain the resin with cold flow property and viscosity.
Description
(1), technical field
The present invention relates to a kind of preparation method who improves retreading " middle pad glue " low-temperature fluidity and tackifying resin, belong to the petrochemical technology field.
(2), technical background
For many years, the resin hardness used in preparation of retreading " middle pad glue " is bigger, viscosity is general, thereby made " middle pad glue " hardness is too high, it is mobile poor when low temperature (50-60 ℃) uses, saturation to retreading carcass and tread rubber is not enough, needs spray rubber cement aid adhesion on tyre surface and carcass when overhauling, and has influenced the bonding effect between carcass and the tyre surface.
(3), summary of the invention
The present invention is a paste high molecular bonding system of having researched and developed a kind of novel low-temperature fluidity, be applied in " middle pad glue " preparation and make its low-temperature fluidity that has improved it and viscosity, do not needing to spray under the condition of rubber cement, realized that carcass and tyre surface are fine bonding, and this resin does not influence the sulfuration of " middle pad glue " in the retreading sulfidation, make the low-temperature fluidity of " middle pad glue " good, autohension and mutual viscosity are good, have improved the inner quality of retreading.
1, rubber low-temperature fluidity Polymer Systems is synthetic.
Main raw material is rich in styrene-indenes cut, and the cut flow process is 145-200 ℃.
The cut composition is distributed as:
Vinylbenzene-indenes 45%, cyclopentadiene 20%, dimethylbenzene 20%, vinyl toluene 10%, dicyclopentadiene 5%.
Above-mentioned mixed fraction is carried out the dication catalytic low temperature polymerization, and obtaining has the mobile paste system of iodine value between 150-200 between 35-40 ℃, requires the molecular weight size average stable, does not contain low volatilization composition.
2, the bipolarity resin is synthetic.
With octyl phenol resinoid and rare earth chloride etc., under the condition that solvent exists, react and obtain a kind of bipolarity resin system.
3, the low-temperature fluidity resin is synthetic.
Warm reaction under high pressure during above-mentioned two kinds of systems are carried out under the condition that alkynes resin, white carbon black exist is measured and is sloughed solvent after reaching certain viscosity and iodine value, promptly obtains a kind of resin with low-temperature fluidity and viscosity.
Embodiment one:
1, get 1000 parts of rich in styrene-indenes cut, 0.1 part of dication catalyzer, temperature-25 ℃ to-15 ℃ stirring reaction 38-48 hour, constantly charge into shielding gas during reaction.
2, add 1 part of methyl alcohol under temperature-15 ℃ condition, constant temperature stirred 2-3 hour.
3, after standing demix 8-12 hour, take off a layer liquid, under 200-220 ℃ of temperature, slough residual fraction, obtain the mobile thick liquid of 700-780 part normal temperature.Iodine value is 155-195.
4, get 400 parts of octyl phenol resinoids, 20 parts of rare earth chlorides, 200 parts of methyl alcohol, 200 parts of toluene mixed stirring reaction 4-6 hour, obtained solid resin after sloughing methyl alcohol, toluene.
5, get 750 parts of above-mentioned thick liquids, 200 parts of solid resins, 30 parts of alkynes resins, 20 parts of white carbon blacks, at temperature 220-260 ℃, reaction is 8-10 hour under the pressure 1.5-2 MPa, obtains a kind of resin with low-temperature fluidity and viscosity.
Embodiment two:
1, rich in styrene-indenes cut: vinylbenzene-indenes 45%, cyclopentadiene 20%, dimethylbenzene 20%, vinyl toluene 10%, dicyclopentadiene 5%.Get 1000 parts of rich in styrene-indenes cut, 0.1 part of dication catalyzer, temperature-25 ℃ to-15 ℃ stirring reaction 38-48 hour, constantly charge into shielding gas during reaction.
2, add 2 parts of ethanol under temperature-15 ℃ condition, constant temperature stirred 1-3 hour.
3, leave standstill layering in 8-12 hour after, take off a layer liquid, under 200-220 ℃ of temperature, slough residual fraction, obtain 700-780 part normal temperature thick liquid that flows.Iodine value is 155-200.
4, get 480 parts of octyl phenol resinoids, 20 parts of rare earth chlorides, 300 parts of ethanol, 200 parts of toluene mixed stirring reaction 4-6 hour, obtained solid resin after sloughing ethanol, toluene.
5, get 750 parts of above-mentioned thick liquids, 200 parts of solid resins, 30 parts of alkynes resins, 20 parts of white carbon blacks, at temperature 220-260 ℃, reaction is 8-10 hour under the pressure 1.5-2 MPa, obtains a kind of resin with low-temperature fluidity and viscosity.
Claims (3)
1. rubber low-temperature fluidity Polymer Systems is synthetic.
Main raw material is rich in styrene-indenes cut, and the cut flow process is 145-200 ℃.
The cut composition is distributed as: vinylbenzene-indenes 45%, cyclopentadiene 20%, dimethylbenzene 20%, vinyl toluene 10%, dicyclopentadiene 5%.
Above-mentioned mixed fraction is carried out the dication catalytic low temperature polymerization, and obtaining has the mobile paste system of iodine value between 150-200 between 35-40 ℃, requires the molecular weight size average stable, does not contain low volatilization composition.Concrete steps: 1. get 1000 parts of rich in styrene-indenes cut, 0.1 part of dication catalyzer, temperature-25 ℃ to-15 ℃ stirring reaction 38-48 hour, constantly charge into shielding gas during reaction.2. add 1 part of methyl alcohol under temperature-15 ℃ condition, constant temperature stirred 2-3 hour.3. after standing demix 8-12 hour, take off a layer liquid, under 200-220 ℃ of temperature, slough residual fraction, obtain the mobile thick liquid of 700-780 part normal temperature.Iodine value is 150-200.
2. the bipolarity resin is synthetic.
With octyl phenol resinoid and rare earth chloride etc., under the condition that solvent exists, react and obtain a kind of bipolarity resin system.Step: get 400 parts of octyl phenol resinoids, 20 parts of rare earth chlorides, 200 parts of methyl alcohol, 200 parts of toluene mixed stirring reaction 4-6 hour, obtained solid resin after sloughing methyl alcohol, toluene.
3. the low-temperature fluidity resin is synthetic.
Warm reaction under high pressure during above-mentioned two kinds of systems (rubber low-temperature fluidity Polymer Systems and bipolarity resin) are carried out under the condition that alkynes resin, white carbon black exist, mensuration is sloughed solvent after reaching certain viscosity and iodine value, promptly obtains a kind of resin with low-temperature fluidity and viscosity.Concrete steps: get 750 parts of rubber low-temperature fluidity Polymer Systems thick liquids, 30 parts of bipolar solid resins, 20 parts of white carbon blacks are at temperature 220-260 ℃, reaction is 8-10 hour under the pressure 1.5-2 MPa, obtains a kind of resin with low-temperature fluidity and viscosity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910255636XA CN102093512A (en) | 2009-12-10 | 2009-12-10 | Preparation method of resin for improving cold flow property of middle pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910255636XA CN102093512A (en) | 2009-12-10 | 2009-12-10 | Preparation method of resin for improving cold flow property of middle pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102093512A true CN102093512A (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910255636XA Pending CN102093512A (en) | 2009-12-10 | 2009-12-10 | Preparation method of resin for improving cold flow property of middle pad |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102516704A (en) * | 2011-12-22 | 2012-06-27 | 宫相勤 | Waterproof material and its preparation method |
| CN110591265A (en) * | 2019-09-06 | 2019-12-20 | 青岛海佳助剂有限公司 | Preparation method of composite resin with special adhesion |
-
2009
- 2009-12-10 CN CN200910255636XA patent/CN102093512A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102516704A (en) * | 2011-12-22 | 2012-06-27 | 宫相勤 | Waterproof material and its preparation method |
| CN102516704B (en) * | 2011-12-22 | 2013-06-12 | 宫相勤 | Waterproof material and its preparation method |
| CN110591265A (en) * | 2019-09-06 | 2019-12-20 | 青岛海佳助剂有限公司 | Preparation method of composite resin with special adhesion |
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Application publication date: 20110615 |