Composition and process for producing silylated polymers and use thereof
AssigneePolyU GmbH
InventorsKlaus LANGERBEINS, Michael SENZLOBER
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Abstract
The invention relates to a composition comprising and to a process for preparing moisture-crosslinking polymers under catalysis by a metal-siloxane-silanol(ate) compound, and to the use of the composition in the CASE sector (coatings, adhesives, sealants and elastomers), especially in the field of adhesives and sealants.
Claims23
A composition comprising at least one silylated polymer (SiP) obtainable by a synthesis, catalysed by a metal-siloxane-silanol(ate) compound, of at least one isocyanate-reactive compound, especially at least one hydroxy-functionalized polymer (component A), and one or more compounds having at least one isocyanate group (component B).
A process for producing a silylated polymer (SiP)-containing composition, comprising the following steps:
- (i) synthesizing a polymer by combining at least one isocyanate-reactive compound, especially a hydroxy-functionalized polymer, with one or more isocyanates (Iso), or one or more isocyanatosilanes (Iso-Si), using a metal-siloxane-silanol(ate) compound, especially heptaisobutyl POSS-titanium(IV) ethoxide (TiPOSS), heptaisobutyl POSS-tin(IV) ethoxide (SnPOSS), or mixtures thereof,
- (ii) optionally admixing the polymer from step (i) with a catalyst selected from dibutyltin dilaurate (DBTL) or a metal-siloxane-silanol(ate) compound, especially heptaisobutyl POSS-titanium(IV) ethoxide (TiPOSS), heptaisobutyl POSS-tin(IV) ethoxide (SnPOSS), mixtures thereof.
Dependencies are inferred from the claim text.