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US 6,656,408 B2Granted
Method for extrusion molding an extrudable cement-based or gypsum-based hydraulic composition
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsYoshiaki Sasage, Masaki Tabata, Tsutomu Yamakawa
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Abstract
A binder for hydraulic compositions comprises a water-soluble cellulose ether and a long-chain alkylbenzene-sulfonic acid or a neutralization salt thereof. The presence of the long-chain alkylbenzenesulfonic acid compound as a binder component provides hydraulic compositions with a better plasticity at a lower water-soluble cellulose ether content than when the cellulose ether is used alone as the binder.
Claims17
A method comprising extrusion molding a cement-containing or gypsum-containing extrudable hydraulic composition, which composition comprises:
- a cement or gypsum hydraulic substance,
- a reinforcing fiber, and
- a binder comprising a water-soluble cellulose ether and a long-chain alkylbenzenesulfonic acid or a neutralization salt thereof.
Dependencies are inferred from the claim text.