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Process for the synthesis of functionalized poly(1,3-alkadienes) and use thereof in the preparation of high impact vinyl aromatic polymers

A vinyl aromatic, functionalized technology for the preparation of styrene polymers grafted on functionalized polybutadiene

Active Publication Date: 2011-08-24
POLIMERI EUROPA SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The shortcoming of these patent applications is the addition of unit operations in the production of rubber reinforced styrenic materials

Method used

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  • Process for the synthesis of functionalized poly(1,3-alkadienes) and use thereof in the preparation of high impact vinyl aromatic polymers
  • Process for the synthesis of functionalized poly(1,3-alkadienes) and use thereof in the preparation of high impact vinyl aromatic polymers
  • Process for the synthesis of functionalized poly(1,3-alkadienes) and use thereof in the preparation of high impact vinyl aromatic polymers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] Embodiment 1 (contrast)

[0102] In a nitrogen stream, the following products were successively introduced into a 100-liter water-free reactor, which was equipped with a stirrer and a heating jacket, and heat transfer oil at a temperature of 50° C. was circulated in the jacket: 50 kg of anhydrous Aqueous cyclohexane, 6.5 kg of anhydrous butadiene without inhibitors and alkynes and 5 g THF. When the reaction mixture reached a temperature of 40° C., 2.6 g of a 15% by weight solution of butyllithium dissolved in cyclohexane was added. When the conversion was complete, a 2.77 g portion of trimethylchlorosilane was fed into the reactor at a temperature of 105°C to achieve complete termination of the chain ends.

[0103] The reagent mixture is then released into a pressurized container where the 565 and 168, added in amounts such that their contents in the elastomer were equal to 0.1 and 0.4%, respectively.

[0104] The polymer is then separated from the solvent by stri...

Embodiment 2

[0110] In a nitrogen stream, the following products were successively introduced into a 100-liter water-free reactor, which was equipped with a stirrer and a heating jacket, and heat transfer oil at a temperature of 50° C. was circulated in the jacket: 50 kg of anhydrous Aqueous cyclohexane, 6.5 kg of anhydrous butadiene without inhibitors and alkynes and 5 g THF. When the reaction mixture reached a temperature of 40° C., 2.16 g of a 15% by weight solution of butyllithium dissolved in cyclohexane was added. When the conversion is complete, a portion of 0.83 g of a 5% solution of butyllithium dissolved in cyclohexane is fed into the reactor at a temperature of 105° C., and after waiting 5′, a second portion of 6.6 g 5% solution of butyllithium dissolved in cyclohexane. Immediately after the second addition of butyllithium, 20 g of octyl bromide in 20% cyclohexane was added, followed immediately by 25.6 g of 1,1,3,3-tetraethylisoindolin-2-yl Oxygen (TEDIO).

[0111] The reage...

Embodiment 3

[0116] Embodiment 3 (contrast)

[0117] In a nitrogen stream, the following products were successively introduced into a 100-liter water-free reactor, which was equipped with a stirrer and a heating jacket, and heat transfer oil at a temperature of 50° C. was circulated in the jacket: 50 kg of anhydrous Aqueous cyclohexane, 6.5 kg of anhydrous butadiene without inhibitors and alkynes and 5 g THF. When the reaction mixture reached a temperature of 40° C., 1.5 g of a 15% by weight solution of butyllithium dissolved in cyclohexane was added. When the conversion was complete, a 2 g portion of trimethylchlorosilane was fed into the reactor at a temperature of 102°C to achieve complete termination of the chain ends.

[0118] The reagent mixture is then released into a pressurized container where the 565 and 168, added in amounts such that their contents in the elastomer were equal to 0.1 and 0.4%, respectively.

[0119] The polymer is then separated from the solvent by strippi...

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Abstract

Process for the preparation of vinyl aromatic (co) polymers grafted on an elastomer in a controlled manner, comprising: dissolving an elastomer functionalized with bromoalkanes and nitroxy radicals, soluble in non-polar solvents, in a liquid phase consisting of a mixture of vinyl aromatic monomer (s) / polymerization solvent; feeding at least one radical initiator to the mixture, containing the functionalized elastomer in solution, and polymerizing the mixture thus obtained at a temperature higher than or equal to 1200C; recovering the vinyl aromatic (co) polymer obtained after devolatization;and recycling the solvent / monomer (s) mixture, coming from the devolatization, to step (a).

Description

technical field [0001] The present invention relates to the synthesis of functionalized poly(1,3-dienes) and their use in the preparation of impact-resistant vinyl aromatic polymers and copolymers. [0002] More specifically, the present invention relates to the preparation of vinyl aromatic polymers or copolymers (hereinafter referred to as (co)polymers) grafted on functionalized poly(1,3-dienes) in a controlled manner. A method wherein the diene group contains 4-8 carbon atoms. [0003] More specifically, the present invention relates to a process for the preparation of styrene (co)polymers grafted on functionalized polybutadiene in the presence of a system suitable for living free radical polymerization. Background technique [0004] The term "living free radical polymerization" as used in the specification and claims refers to conventional free radical polymerization also carried out in the presence of chemicals capable of reversibly reacting with free radicals of growi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08C19/44C08F2/00
CPCC08F291/00C08L51/04C08F293/005C08L15/00C08C19/44C08F279/02C08F2/00C08F212/08C08F212/12
Inventor G·T·维欧拉L·奇兹
Owner POLIMERI EUROPA SPA
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