Modified conjugated diene-based polymer and rubber composition comprising same
A rubber composition, conjugated diene technology, applied in the direction of rolling resistance optimization, road transportation emission reduction, etc., can solve the problems of poor physical properties, low productivity, deteriorating processability, etc., and achieve excellent processability and viscoelasticity. , good physical properties
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0095] In order to prepare the modified conjugated diene polymer, the invention provides a preparation method of the modified conjugated diene polymer. The preparation method of the modified conjugated diene polymer may include: in a hydrocarbon solvent, in the presence of an organometallic compound, making a conjugated diene monomer, or an aromatic vinyl monomer and a conjugated diene monomer Bulk polymerization to prepare the step (S1) of living polymer combined with organometallic; And the step (S2) of making the living polymer prepared in step (S1) react or couple with modifier, wherein said step (S1 ) is continuously performed in two or more polymerization reactors, and the polymerization conversion rate in the first reactor of the polymerization reactors may be 50% or less.
[0096] The hydrocarbon solvent is not particularly limited, but may be, for example, one or more selected from n-pentane, n-hexane, n-heptane, isooctane, cyclohexane, toluene, benzene and xylene . ...
Embodiment 1
[0136] Into the first reactor in the continuous reactor of three reactors connected in series, inject the styrene solution that dissolves 60% by weight styrene in n-hexane with the rate of 3.6 kg / h, with the rate of 12.6 kg / h Inject a 1,3-butadiene solution in which 60% by weight of 1,3-butadiene is dissolved in n-hexane, inject n-hexane at a rate of 47.2kg / h, inject and dissolve in n-hexane at a rate of 40g / h The 1,2-butadiene solution of 2.0% by weight of 1,2-butadiene is injected at a rate of 125.0g / h to dissolve 10% by weight of 2,2-(bis( 2,2-(di(2-tetrahydrofuryl)propane (DTP) solution of 2-tetrahydrofuryl)propane, and n-butyl as a polymerization initiator dissolved in n-hexane at a rate of 46.0 g / h at 10% by weight Lithium in n-butyllithium solution.
[0137] In this case, the temperature of the first reactor was maintained to 45° C., and when the polymerization conversion rate reached 48%, the polymer was transferred from the first reactor to the second reactor through...
Embodiment 2
[0142]Into the first reactor in the continuous reactor of three reactors connected in series, inject the styrene solution that dissolves 60% by weight styrene in n-hexane with the rate of 3.6 kg / h, with the rate of 12.6 kg / h Inject a 1,3-butadiene solution in which 60% by weight of 1,3-butadiene is dissolved in n-hexane, inject n-hexane at a rate of 47.2kg / h, inject and dissolve in n-hexane at a rate of 40g / h The 1,2-butadiene solution of 2.0% by weight of 1,2-butadiene is injected at a rate of 125.0g / h to dissolve 10% by weight of 2,2-(bis( 2,2-(di(2-tetrahydrofuryl)propane solution of 2-tetrahydrofuryl)propane, and 10% by weight of n-butyllithium dissolved in n-hexane as a polymerization initiator were injected at a rate of 36.0 g / h. n-Butyllithium solution.
[0143] In this case, the temperature of the first reactor was maintained at 55° C., and when the polymerization conversion rate reached 45%, the polymer was transferred from the first reactor to the second reactor thr...
PUM
| Property | Measurement | Unit |
|---|---|---|
| molecular weight distribution | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More