Unlock instant, AI-driven research and patent intelligence for your innovation.

Analysis method for contaminativity of antioxidant to solvent system

An analysis method and antioxidant technology, which are applied in the fields of synthetic rubber production and chemical analysis and detection, can solve problems such as difficulty in selecting antioxidants, and achieve the effect of convenient and feasible production and installation and guaranteeing accuracy.

Inactive Publication Date: 2015-06-24
BEIJING RES & DESIGN INST OF RUBBER IND
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to choose a suitable antioxidant simply from the molecular weight

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Analysis method for contaminativity of antioxidant to solvent system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: The retort was weighed at constant weight and accurately weighed to four decimal places; a certain mass of phenolic antioxidant 1076 was accurately weighed and added to the retort. Add mineral spirits and configure the antioxidant into a 9% concentration solution.

[0029] Connect and assemble the distillation bottle, the condenser tube, the recovery bottle, and the vacuum pump, and the temperature of the constant temperature water bath where the distillation bottle is located is 60°C. Start the vacuum pump and turn on the circulating cooling water.

[0030] 5 minutes after the solvent system evaporates completely, shut down the equipment. Blow the distillation bottle with a nitrogen blower to avoid solvent residue. Accurately weigh the retort and compare this weight to the total mass of the antioxidant-added sample and retort.

[0031] Use an infrared spectrometer to determine whether there is the presence of antioxidant 1716 in the recovery bottle. Befo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for detecting and evaluating whether an antioxidant used in the production process of synthetic rubber will pollute a solvent system. By the method, the recovery process of the solvent system in the production of synthetic rubber in a solution polymerization system is simulated to some extent, and whether the antioxidant has the capability of contaminating the solvent system can be really reflected. Equipment used in the invention is commonly-used chemical test equipment. In comparison with special-purpose equipment, the equipment of the invention is cheap in price, easily-available and is convenient and feasible to manufacture and install. In addition, the method can be adopted in labs, can rapidly and accurately measure samples and plays a beneficial guiding role in selecting a qualified antioxidant system for synthetic rubber manufacturing enterprises.

Description

technical field [0001] The invention relates to a method for detecting and evaluating whether an antioxidant system will pollute a solvent system during the production of synthetic rubber. The method is suitable for the production process of the synthetic rubber of the solution polymerization system such as butadiene rubber, isoprene rubber and solution-polymerized styrene-butadiene rubber. The invention belongs to the technical field of synthetic rubber production and chemical analysis and detection. Background technique [0002] Solution polymerization method to produce synthetic rubber, such as solution polymerization styrene-butadiene rubber batch method, its general production process is: fresh solvent system and recycled solvent system are mixed according to a certain proportion, after refining treatment, they are mixed with reaction monomers, active agents, etc. It is sent into the polymerization tank at low temperature; after the reaction conditions are met, an init...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04G01N21/3577
Inventor 张新军李花婷刘欣然
Owner BEIJING RES & DESIGN INST OF RUBBER IND