Tin catalysts, a process for their production, their use and cross-linkable mixtures containing them
AssigneeGE Bayer Silicones GmbH & Co. KG
InventorsRobert Friebe, Hans Sattlegger, Karl-Heinz Sockel, Wilhelm Weber, Axel Wilms
Life of this patent
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Abstract
Storage-stable crosslinkable RTV-1 compositions comprising at least one tin catalyst obtained by the reaction of at least one organotin compound with at least one monoorthophosphoric acid or mixture of mono and di-orthophosphoric acids, and at least one crosslinkable polysiloxane.
Claims12
Crosslinkable RTV compositions containing at least one tin catalyst obtained by the reaction of
- a) at least one organotin compound with
- b) at least one monoorthophosphoric acid ester or a mixture of at least one monoorthophosphoric acid ester with at least one di-orthophosphoric acid ester, and
- c) optionally further phosphoric acid esters and
- d) optionally an alkoxysilane or two or more alkoxysilanes,
- at least one crosslinkable polysiloxane,
- optionally one or more alkoxysilane crosslinking agents,
- optionally fillers and,
- optionally further additives and auxiliary substances.
Crosslinkable RTV compositions containing at least one tin catalyst, at least one crosslinkable polysiloxane, optionally one or more alkoxysilane crosslinking agents and optionally further additives and auxiliary substances, wherein the tin catalyst is produced in situ during the production of the crosslinkable RTV composition by the reaction of at least one organotin compound a), at least one monoorthophosphoric acid ester or a mixture of at least one monoorthophosphoric acid ester with at least one di-orthophosphoric acid ester, and optionally further phosphoric acid esters c), one or more alkoxysilanes d), further auxiliary substances e), or a combination thereof.
An RTV-1 or RTV/-2 composition comprising at least one tin catalyst obtained by the reaction of
- a) at least one organotin compound with
- b) at least one monoorthophosphoric acid ester or a mixture of at least one monoorthophosphoric acid ester with at least one di-orthophosphoric acid ester, and
- c) optionally further phosphoric acid esters and
- d) optionally an alkoxysilane or two or more alkoxysilanes,
- at least one crosslinkable polysiloxane.
- optionally one or more alkoxysilane crosslinking agents,
- optionally fillers and,
- optionally further additives and auxiliary substances.
Dependencies are inferred from the claim text.