Organoclay compositions and method of preparation
AssigneeSouthern Clay Products, Inc.
InventorsThomas C. Farrow, Chris A. Rasmussen, William R. Menking, David Hugh Durham, Paul W. Carroll
Life of this patent
Estimating the term…
Abstract
An organoclay composition comprising a mineral clay mixture which has been treated with an alkyl quaternary ammonium salt said mixture comprising: mineral clay (a) comprising 50 to 95 wt. %, based on the weight of the mineral clay mixture, of a mineral clay selected from the group consisting of sepiolite, palygorskite and mixtures of sepiolite and palygorskite; and mineral clay (b) comprising the balance by weight of the mineral clay mixture, of a smectite.
Claims19
An organoclay composition comprising a mineral clay mixture which has been treated with an alkyl quaternary ammonium salt, said mixture comprising a dilute aqueous slurry of:
- mineral clay (a) comprising 50 to 95 wt. %, based on the weight of the mineral clay mixture, of a mineral clay selected from the group consisting of sepiolite palygorskite and mixtures of sepiolite and palygorskite;
- and
- mineral clay (b) comprising the balance by weight of the mineral clay mixture, of a smectite.
A method for producing an organoclay composition for use as a functional additive with organic compositions;
- said method comprising:
- subjecting both a mineral clay (a) and a mineral clay (b) to high shear as dilute aqueous slurries;
- and thereupon reacting an aqueous mixture of the sheared mineral clays with an alkyl quaternary ammonium compound;
- said mineral clay (a) comprising 50 to 95 wt. %, based on the weight of the mineral clay mixture, of a mineral clay selected from the group consisting of sepiolite, palygorskite and mixtures of sepiolite and palygorskite;
- and
- said mineral clay (b) comprising the balance by weight of the mineral clay mixture, of a smectite;
- and
- dewatering the resulting organoclay product.
Dependencies are inferred from the claim text.