C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/487 (2006.01) C04B 24/38 (2006.01) C04B 28/04 (2006.01) C09K 8/46 (2006.01)
Patent
CA 2598939
A fluid loss control additive comprising a crosslinked polymer and sugar and cement compositions comprising the same. In one embodiment, the fluid loss control additive comprises a polymer and a sugar connected by a pH-sensitive crosslink. In some embodiments, the polymer is a polyvinyl alcohol, and the sugar is a sugar alcohol such as sorbitol.
L~invention concerne un additif de régulation de perte de fluide comprenant un polymère réticulé et un sucre et des compositions de ciment le comprenant. Dans un mode de réalisation, l~additif de régulation de perte de fluide comprend un polymère et un sucre liés par une réticulation sensible au pH. Dans certains modes de réalisation, le polymère est un poly(alcool vinylique), et le sucre est un polyol tel que le sorbitol.
Fenchl Andrea
Lewis Samuel J.
Spindler Christian
Szymanski Michael J.
Basf Construction Polymers Gmbh
Halliburton Energy Services Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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