Intercalates, exfoliates and concentrates thereof formed...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

Reexamination Certificate

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C524S186000, C524S447000

Reexamination Certificate

active

07446143

ABSTRACT:
A method of manufacturing a nanocomposite composition comprising forming an intercalating composition comprising 1% to about 90% by weight of a purified sodium smectite clay that contains at least 75% Na+ions based on the total interlayer exchangeable cations, that has been intercalated and thereby swollen sufficiently for polyamide monomer or oligomer intercalation, with a protonated organic, non-carboxylic acid moiety-containing onium ion swelling agent; and about 10% to about 99% of a lactam ring-containing monomer or oligomer, and heating the intercalating composition to a temperature above the melting point of the lactam to open the lactam ring and polymerize the lactam to form the polyamide while in contact with the smectite clay.

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