Clay/AMO complex and derivative thereof and method for producing the same
AssigneeNational Chung Hsing University
InventorsJiang-Jen Lin, Chung-Ming Tsai
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Abstract
The present invention discloses a clay/amine complex which is an excellent surfactant and a good reinforcing agent of polymers. The complex of the present invention can be produced by modifying layered inorganic silicate clay such as montomorillonite, with an intercalating agent, AMO (amine terminal-mannich oligomer). The AMO can be obtained by polymerizing polyoxyalkylene amine having molecular weight over 1000, p-cresol and formaldehyde. The present invention further discloses a nanosilica plate, which can be obtained by extracting the above complex with a hydroxide or a chloride of alkali metal or alkaline-earth metal, and consequently, the AMO intercalating agent can be recycled for reusing.
Claims21
An clay/AMO complex, comprising:
- an amine terminal-mannich oligomer (AMO) having a straight chain structure formed by polymerizing polyoxyalkylene amine with a molecular weight over 1000, p-cresol and formaldehyde;
- and layered inorganic silicate clay intercalated with said AMO.
The nanosilica plate of claim 8, which is formed by extracting the complex of claim 1 with sodium hydroxide.
A method for producing a clay/AMO complex, comprising at least one step of intercalating layered inorganic silicate clay with an intercalating agent, amine terminal-mannich oligomer (AMO), by powerfully stirring at 60-180° C. to perform cation exchange;
- wherein said intercalating agent is a straight chain polymer formed by polymerizing polyoxyalkylene amine having a molecular weight over 1000, p-cresol and formaldehyde, and previously acidified with an inorganic acid, and said layered inorganic silicate clay previously is previously swelled with water.
Dependencies are inferred from the claim text.