Preparation method of emulsion polymerized rubber without nitroso compound

A nitroso compound, emulsion polymerization technology, applied in the field of emulsion polymerization rubber preparation, can solve problems such as corrosion of equipment, large amount of sodium sulfide, unpleasant smell of hydrogen sulfide, etc.
CN1429847AInactive Publication Date: 2003-07-16CHINA PETROLEUM & CHEM CORP

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2003-07-16
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

A process for preparing the emulsion polymerization rubber (butadiene styrene rubber) not containing nitroso compound features that the components D, E and S are used as the reaction terminating agents to replace original SDD, DEHA and sodium nitrite in a defined manner. The said D is the monoalkyl or monoaryl bithioaminoformate. The said E is the hydroxyamine hydrochloride (or sulfate). The saidS is sodium sulfite or hydrated sodium sulfide.
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Description

technical field

[0001] The invention belongs to the field of polymer synthesis, and relates to a method for preparing emulsion polymerized rubber, that is, when the emulsion polymerization reaction is terminated, the emulsion polymerized rubber is prepared by using a substance that does not contain nitroso compounds or nitroso preparations. Background technique

[0002] The production of styrene-butadiene rubber by emulsion polymerization includes under the action of redox initiator, using rosin acid soap and fatty acid soap mixed emulsifier, oxidant is dicumyl hydrogen peroxide, pinane hydrogen peroxide or p-menthane hydrogen peroxide, Sodium formaldehyde sulfoxylate and iron sodium salt of ethylenediaminetetraacetate are used as reducing agents to carry out low-temperature emulsion polymerization reaction of butadiene and styrene. A reaction terminator is added to the outlet pipeline of the polymerization reactor to terminate the polymerization react...

Claims

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