- Patent Title: Use of aqueous emulsions based on propylethoxysilane oligomers as an additive in hydraulically setting cement compositions for reduction of shrinkage characteristics
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Application No.: US15594001Application Date: 2017-05-12
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Publication No.: US10259748B2Publication Date: 2019-04-16
- Inventor: Michael Schottler , Christine Fliedner , Thomas Roehrig
- Applicant: Evonik Degussa GmbH
- Applicant Address: DE Essen
- Assignee: Evonik Degussa GmbH
- Current Assignee: Evonik Degussa GmbH
- Current Assignee Address: DE Essen
- Agency: Grüneberg and Myers PLLC
- Priority: EP16169271 20160512
- Main IPC: C04B24/42
- IPC: C04B24/42 ; C04B24/16 ; C04B7/345 ; C04B40/00 ; C04B103/00 ; C04B103/67 ; C04B111/34 ; C04B103/56 ; C04B111/60
Abstract:
An aqueous oil-in-water emulsion containing a propylethoxysilane oligomer mixture or a mixture of a propylethoxysilane oligomer mixture and octyltriethoxysilane in a weight ratio of 3:1 to 1:3, at least one emulsifier or an emulsifier system, at least one content of a 2-aminoethanol and water is used as an addition in the production of hydraulically setting cement mixtures such as mortar, screed or concrete for reduction of the shrinkage characteristics.
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