C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 12/04 (2006.01)
Patent
CA 2544256
Provided herein are catalysts useful in the curing of cementitious mixtures, which catalysts comprise one or more alkylene carbonates in combination with glycerin carbonate. Through use of a catalyst according to the present invention, cementitious mixtures containing sodium silicate may be cured at low temperatures because the catalysts of the invention function well at low temperatures, even though they contain ethylene carbonate, a material whose melting point of 36~C otherwise precludes its use as a cure accelerant for silicates. Figure 1 is a graphical representation of the results shown in Table II.
L'invention concerne des catalyseurs utiles dans le durcissement de mélanges cimenteux, qui comprennent un ou plusieurs carbonates d'alkylène en combinaison avec du carbonate de glycérine. Le bon fonctionnement desdits catalyseurs à des basses températures permet à des mélanges cimenteux contenant du silicate de sodium de durcir à des basses températures, même si lesdits catalyseurs comprennent du carbonate d'éthylène, un matériau dont le point de fusion de 36 ·C le destine à être utilisé en tant qu'accélérateur de durcissement pour des silicates. La figure 1 est une représentation graphique des résultats indiqués dans le tableau II.
Clements John H.
Darragas Katty
Klein Howard P.
Huntsman Petrochemical Corporation
Smart & Biggar
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