Preparation method of carboxylic acrylonitrile butadiene rubber latex containing vinyl chloride structure
The technology of carboxyl nitrile latex and vinyl chloride is applied in the field of preparation of carboxyl nitrile latex, which can solve the problem of not being able to release in time, and achieve the effects of less residual monomers, complete conversion, and improved chemical resistance.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0017] A preparation method of carboxylated nitrile latex containing vinyl chloride structure, comprising the following steps:
[0018] (1) The synthesis of latex, add deionized water, electrolyte, pH buffering agent, mercaptan, emulsifier, acrylonitrile, unsaturated carboxylic acid, unsaturated carboxylic acid ester, initiator successively according to weight part, fill nitrogen and vacuumize, Repeat three times, add butadiene and vinyl chloride, start to heat up to 30-40°C, react for 6-8 hours, add emulsifier and mercaptan, continue to heat up to 45-60°C, react for 6-8 hours, when the conversion When the rate reaches 95%, add an oil-soluble initiator, continue the reaction for 1 to 2 hours, and stop the reaction;
[0019] (2) Latex degassing and post-treatment, add deionized water to the polymerized latex first, dilute the latex to a total solid content of 39-41%, start to pass through the degassing tower, the latex enters from the top of the tower, and steam is introduced f...
Embodiment 1
[0021] A preparation method of carboxylated nitrile latex containing vinyl chloride structure, comprising the following steps:
[0022] (1) The synthesis of latex, first vacuumizes the polymerization kettle, drops into 120 parts of deionized water successively, 0.4 part of electrolyte, 0.2 part of pH buffering agent, 3.0 parts of emulsifier, 30 parts of acrylonitrile, 5 parts of unsaturated carboxylic acid, unsaturated carboxylic acid 2 parts of saturated carboxylate, 0.6 part of mercaptan, and 0.3 part of initiator. Fill nitrogen and vacuumize repeatedly three times, add 60 parts of butadiene, 3 parts of vinyl chloride, start to heat up to 30-40 °C, react for 6-8 hours, add 0.3 parts of emulsifier and 0.2 parts of mercaptan; continue to heat up to 45-40 °C At 60°C, react for 6-8 hours. When the conversion rate reaches 95%, add 0.05 part of oil-soluble initiator, continue the reaction for 1-2 hours, and stop the reaction.
[0023] (2) Latex degassing and post-treatment, add d...
Embodiment 2
[0025] A preparation method of carboxylated nitrile latex containing vinyl chloride structure, comprising the following steps:
[0026] (1) The synthesis of latex, first vacuumizes the polymerization kettle, drops into 120 parts of deionized water successively, 0.4 part of electrolyte, 0.2 part of pH buffering agent, 3.0 parts of emulsifier, 27 parts of acrylonitrile, 5 parts of unsaturated carboxylic acid, unsaturated carboxylic acid 2 parts of saturated carboxylate, 0.6 part of mercaptan, and 0.3 part of initiator. Fill nitrogen and vacuumize repeatedly three times, add 60 parts of butadiene and 6 parts of vinyl chloride, start to heat up to 30-40°C, react for 6-8 hours, add 0.3 parts of emulsifier and 0.2 parts of mercaptan; continue to heat up to 45-40 °C At 60°C, react for 6-8 hours. When the conversion rate reaches 95%, add 0.05 part of oil-soluble initiator, continue the reaction for 1-2 hours, and stop the reaction.
[0027] (2) latex degassing and aftertreatment, wit...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com