Application of a New Type of NR Preservative
The new type of NR preservative is a kind of biological agent which is made from high-active algae and inorganic salt compounds produced through consecutive combination reactions of ingredients, mainly involving sodium hydrogen sulfite, sodium benzoate, sodium carbonate, citric acid, butyl p-hydroxybenzoate and Sodium silicate pentahydrate. The newly invented NR preservative applied at the percentage of 0.30% proves most effective in delivering comprehensive effects, such as preventing the latex from going bad, ensuring the normal running of sewage treatment process, reducing the processing cost by as much as 11.7%, and etc. Meanwhile, it also plays a positive role in improving the post-processing conditions of latex as well as the product quality. The experiment offers a new research direction for solving the environment pollution problem caused by adopting large amounts of ammonium hydroxide and methanoic acid during the production and processing of latex.