Stable suspension of hydrocolloids and superplasticizer

C - Chemistry – Metallurgy – 04 – B

Patent

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Details

C04B 24/38 (2006.01) C04B 28/02 (2006.01) C04B 40/00 (2006.01) C09K 8/04 (2006.01) C09K 8/20 (2006.01) C09K 8/22 (2006.01) C09K 8/46 (2006.01)

Patent

CA 2223723

The present invention comprises a stable hydrocolloid composition in which preferably welan gum is uniformly dispersed in a superplasticizer such as sulfonated naphthalene, sulfonated melamine, modified lignosulfate, their derivatives and mixtures thereof. The mixture is wet milled to form an extremely fine particle size distribution of the gum. The composition is rapidly hydratable and useful as a stabilizing additive in many cement and drilling fluid applications.

L'invention concerne une composition stable d'hydrocolloïdes, dans laquelle, de préférence, de la gomme wellane est dispersée uniformément dans un superplastifiant, tel que naphtalène sulfoné, mélamine sulfonée, lignosulfate modifié, leurs dérivés et leurs mélanges. Le mélange est broyé à l'état humide, de manière à obtenir une répartition extrêmement fine de la dimension des particules de la gomme. Cette composition peut s'hydrater rapidement et est utile en tant qu'additif stabilisant dans de nombreuses applications concernant les ciments et les fluides de forage.

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