Processing method of natural rubber latex using creaming

US11952437B2 · kind B2 · utility

Assignee

• Xiaohui Tian · CN

Inventors

• Xiaohui Tian · Shanghai, CN
• Dongqi Wang · Nanhu, CN

Key dates

• Filing date: Sep 15, 2020
• Grant date: Apr 9, 2024
• Expiry date: Jul 4, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L7/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A processing method of natural rubber latex using creaming includes the following steps: adding a surfactant, a pH adjuster, and deionized water to natural rubber latex, adding a preservative and a creaming agent, mixing and standing a resulting mixture until phase separation occurs, and collecting an upper rubber latex phase and a lower skim latex phase, separately; diluting the upper rubber latex phase with deionized water, adding a preservative, a pH adjuster, a surfactant, and a creaming agent, mixing and standing a resulting mixture until phase separation occurs, and collecting an obtained upper rubber latex phase; and adding a preservative, a pH adjuster, a surfactant, and a creaming agent to an obtained lower skim latex phase, mixing and standing a resulting mixture until phase separation occurs, and collecting an obtained upper rubber latex phase.