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US 9,528,036 B2Granted
Low-voc dialkyl-functional alkoxysiloxanes, processes and use thereof as hydrophobizing impregnating agents for mineral building materials
AssigneeEvonik Degussa GmbH
InventorsChristopher Studte, Spomenko Ljesic
Life of this patent
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Abstract
Low-VOC compositions of dialkyl-functional siloxane oligomers, especially of methylalkylalkoxysiloxanes, and processes for producing them are provided. Additionally methods for hydrophobizing porous mineral substrates employing the low-VOC compositions, in the course of which few or no volatile organic compounds are released, are provided.
Claims20
A composition comprising:
- a dialkyl-functional siloxane oligomer of formula (I):
- and, optionally,
- a dialkyl-functional cyclic siloxane oligomer of formula (II):
- wherein
- each R′ is independently a linear or branched octyl group,
- each R″ is a methyl group,
- each R is independently hydrogen or an alkyl group having 1 to 2 C atoms,
- n is an integer from 0 to 10 and
- m is an integer from 2 to 10.
6 more elements
Dependencies are inferred from the claim text.