Vinyl-terminated epoxidized polysiloxane modified multifunctional solution-polymerized styrene-butadiene rubber and preparation and application thereof

A technology of vinyl-terminated epoxy polysilane and solution-polymerized styrene-butadiene rubber, which is applied in the field of functional functionalized material preparation and achieves the effect of wide range of uses

Pending Publication Date: 2019-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structural characteristics of this organosiloxane compound have not been specifically described in the literature so far.

Method used

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  • Vinyl-terminated epoxidized polysiloxane modified multifunctional solution-polymerized styrene-butadiene rubber and preparation and application thereof
  • Vinyl-terminated epoxidized polysiloxane modified multifunctional solution-polymerized styrene-butadiene rubber and preparation and application thereof
  • Vinyl-terminated epoxidized polysiloxane modified multifunctional solution-polymerized styrene-butadiene rubber and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example

[0107] Source preparation example (source example) 1

[0108] Add 100g of anhydrous vinyl polydimethylhydrogensiloxane (viscosity of 15000mPa·s, vinyl content of 0.56mol%, hydrogen content of 0.02%) into a dried 500mL four-necked flask, and dry over molecular sieves 100mL of anhydrous toluene, feed high-purity nitrogen to drive away the air in the bottle and protect the reaction system, add dropwise 2.5mL of 0.1wt% chloroplatinic acid toluene solution, control the temperature at 50°C, and then add 2.9g of allyl glycidol Add the ether into the separatory funnel and drop it into the reaction solution within 1 h, stir and react at this temperature for 5.5 h, after the reaction is over, add 100 mL of ion-free water to wash the reaction solution for 15 min, then separate the water phase at room temperature, Then vacuum removed low boilers, solvent and unreacted allyl glycidyl ether at about 90° C. to obtain light yellow transparent liquid, and the residual active hydrogen content i...

preparation example 2

[0111]Add 100 g of anhydrous vinyl polymethylvinyl hydrogen-containing siloxane (viscosity of 18000 mPa·s, vinyl content of 0.98 mol%, hydrogen content of 0.04 mol%) into a dried 500 mL four-necked flask, molecular sieve Dried anhydrous toluene 100mL, control the temperature at about 50°C. Add 4.4mL of 0.1wt% chloroplatinic acid toluene solution dropwise, feed high-purity nitrogen to drive away the air in the bottle and protect the reaction system, control the temperature at 65°C, and then Add 5.3g of allyl glycidyl ether into the separatory funnel and drop it into the reaction solution within 2h, stir and react at this temperature for 8h, after the reaction is over, add 100mL of ion-free water to wash the reaction solution for 15min, and then in The water phase was separated at room temperature, and then the low boilers, solvent and unreacted allyl glycidyl ether were removed in vacuum at about 120°C to obtain a light yellow transparent liquid, and the residual active hydrogen...

preparation example 3

[0114] Add 100g of vinyl-terminated polydiethylhydrosiloxane (viscosity of 58000mPa·s, vinyl content of 0.85mol%, hydrogen content of 0.08%), molecular sieve-dried non- Water toluene 100mL, feed high-purity nitrogen to drive away the air in the bottle and protect the reaction system, add dropwise 0.1wt% chloroplatinic acid toluene solution 4.2mL, control the temperature at 85 °C, and then add 11g of 1,2-epoxy- Add 4-vinylcyclohexane into the separatory funnel and drop it into the reaction solution within 1.5h, stir and react at this temperature for 5.5h, after the reaction is over, add 100mL ion-free water to wash the reaction solution for 15min, and then The water phase was separated at room temperature, and the low boilers, solvent and unreacted 1,2-epoxy-4-vinylcyclohexane were removed in vacuum at about 150°C to obtain a light yellow transparent liquid. As a result, the residual active hydrogen content in the pale yellow transparent liquid product was 12 mmol%.

[0115] T...

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Abstract

The invention relates to a method for modifying a polybutadiene-styrene random active lithium polymer by using unsaturated epoxidized polysiloxane. The unsaturated epoxidized polysiloxane provided bythe invention contains unsaturated double bonds and a plurality of epoxy groups with relatively high activity, and contains no active silicon-hydrogen bonds, and a coupling reaction or an end cappingreaction can be effectively carried out on the epoxy groups with active lithium at the tail end of the styrene-butadiene random copolymer, so that multifunctional solution-polymerized styrene-butadiene rubber is obtained. When raw rubber of the multifunctional solution-polymerized styrene-butadiene rubber (SSBR) is used as tread rubber of radial semi-steel tires, the tread vulcanized rubber has relatively low dynamic heat generation, and meanwhile, the rolling resistance reduction rate reaches 28% or above.

Description

technical field [0001] The invention belongs to the field of preparation of functional functionalized materials, in particular to a preparation and application method of styrene-butadiene random copolymer (SSBR) modified by vinyl-terminated epoxy polysiloxane oligomers. Background technique [0002] Solution polystyrene butadiene rubber (SSBR) is made of random copolymerization of styrene and butadiene. Compared with emulsion polystyrene butadiene rubber (ESBR), SSBR can reduce the rolling resistance of radial tires by 20-30%. The improvement rate of wet skid performance is increased by 30-40%. In addition, SSBR adopts anionic polymerization method, the product structure is easy to adjust, and the brand is rich. The development trend of SSBR is ultra-high performance, and functionalization is the most effective way to realize SSBR high performance. The significance of high performance lies in the comprehensive balance of rolling resistance, wet skid resistance and wear resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/02C08L87/00C08L9/06C08K13/02C08K3/36C08K3/04C08K5/09C08K3/22B60C1/00
CPCB60C1/0016C08G81/024C08K2003/2296C08L87/005C08L9/00C08K13/02C08K3/36C08K3/04C08K5/09C08K3/22Y02T10/86
Inventor 邢立江张建国蒋文英卢明星姚琼
Owner CHINA PETROLEUM & CHEM CORP
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