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Building composition containing 3-alkoxy-2-hydroxypropylhydroxyethyl cellulose
Hydrophob modified HEC (n-Butylglycidyl modified hydroxyethyl cellulose) is described for use in dry mortars. Cellulose ethers f this type are available under the trade name Nexton®.
Publisher: Aqualon Company, 1990. US4939192
Cat: Patents: Water retaining additives, water retention agents

Hydrophob modified HEC as additive for
An additive for portland cement-based masonry mortar mixes is described which is based on hydrophob modified hydroxyethyl cellulose. Its essential property is a low level of adsorption onto portland cement. Key properties include good water retention even at elevated temperatures, air entrainment, good low-air workability, and flexural bond strength enhancement (meets the requirements of ASTM C 1329 for mortar cements). Its use level is around 0.007%; tradenames are Nexton M20W, M23W and M25W.
Publisher: Hercules Inc., 2000. US6068696 (Equivalents: EP1098861, DE69903173)
Cat: Patents: Thickener, Rheological Additives

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