JW Latex Consultants (and Rubber Consultants,乳胶顾问) offer solutions to your
problems in Natural Rubber latex and Synthetic Rubber latex processing and the manufacturing of latex products (condoms, catheters, medical gloves, baby teats and soothers, toy balloons etc) Quick answers through e-mails are possible at reasonable cost.
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Send Your Enquiry and Orders To: woonsungliang@yahoo.com.sg
Problem Solving Through E-Mails with John Woon Latex Consultants Is Possible
可以通过电子邮件与JW乳胶顾问来解决问题
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Effect of Storage of Polychloroprene Latex
Manufacturer: We just began making latex dipped products using CR (polychloroprene) latex. We observed a gradual drop in pH and loss of physical properties of the final products as the production progresses over a few weeks. We also observed the formation of coagulum. Would appreciate your advice to overcome these problems.
John Woon (Senior Latex Consultant): The
pH of polychloroprene latex tends to drop on storage due to the liberation of hydrochloric acid (HCl) as a
result of hydrolysis. That was why you encountered coagulum problem.
As a result of breakdown of the carbon-chlorine bonds, crosslinking with ZnO is also affected and hence there is a drop in physical properties, especially tensile strength.
Please adjust the pH with KOH solution and do not use latex more than 6 months old.
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