Polyurea- and/or polyurethane-polyorganosiloxane compounds
View Patent ↗The invention relates to novel polyurea- and/or polyurethane polyorganosiloxane compounds, processes for the preparation thereof, and their use and novel reactive 1- or 2-component systems and cured compositions therefrom. The compounds preferably contain repeating units of the formula (2): in the polyurea- and/or polyurethane polyorganosiloxane backbone. The polyurea- and/or polyurethane polyorganosiloxane compounds can also contain polyether segments in the backbone.
1. Polyurea-polysiloxane compounds consisting of at least one structural element of the formula (1):
wherein
ST 1 is chosen from divalent or higher valency, straight-chain, cyclic or branched, saturated, unsaturated or aromatic, substituted or unsubstituted hydrocarbon radicals having up to 1,000 carbon atoms exclusive of the carbon atoms of an optional polyorganosiloxane unit, which can contain one or more groups chosen from —O—, —C(O)—, —NH—, —NR 3 —,
and a polydiorganosiloxane unit having 2 to 1,000 silicon atoms,
wherein R 3 is a straight-chain, cyclic or branched, saturated, unsaturated or aromatic hydrocarbon radical having up to 40 carbon atoms, which can contain one or more groups chosen from —O—, —C(O)— and —NH—,
and R 5 is a straight-chain, cyclic or branched, saturated, unsaturated or aromatic hydrocarbon radical having up to 100 carbon atoms, which can contain one or more groups chosen from —O—, —C(O)— and —NH—, or R 5 is a divalent radical which forms cyclic structures within the radicals ST 1 and/or ST 2 , and
ST 2 is a radical of the formula (2)
wherein
ST 3 is a straight-chain or cyclic or branched, saturated or unsaturated or aromatic, substituted or unsubstituted hydrocarbon radical having 2 to 100 carbon atoms, which can be substituted by —O—, —C(O)—, —NH—, —NR 3 —, wherein R 3 is as defined above,
ST 4 is a straight-chain or cyclic or branched, saturated or unsaturated or aromatic, substituted or unsubstituted hydrocarbon radical having 2 to 100 carbon atoms exclusive of the carbon atoms of an optional polyorganosiloxane unit, which can be substituted by —O—, —C(O)—, —NH—, —NR 3 — and by a polydiorganosiloxane unit having 2 to 200 silicon atoms, wherein R 3 is as defined above, and
A − is an organic or inorganic anion,
with the proviso that at least one of the radicals ST 1 , ST 4 contains a polydiorganosiloxane radical,
or acid addition compounds and/or salts of the foregoing.
2. The polyurea-polysiloxane compounds of claim 1 , containing at least one polydiorganosiloxane structural element of the formula (6):
wherein
R 4 is a straight-chain, cyclic or branched, saturated, unsaturated or aromatic, substituted or unsubstituted hydrocarbon radical having up to 20 C atoms, and
s=1 to 999.
3. The polyurea-polysiloxane compounds of claim 2 , wherein
R 4 is a C 1 to C 20 straight-chain or cyclic or branched, saturated or unsaturated or aromatic hydrocarbon radical, and
s is 1 to 199.
4. The polyurea-polysiloxane compounds of claim 3 , containing at least one polydiorganosiloxane structural element of the formula (6′)
5. The polyurea-polysiloxane compounds of claim 1 , containing at least two structural elements of the formula (1).
6. The polyurea-polysiloxane compounds of claim 4 , containing on average at least two structural elements of the formula (6) or (6′).
7. The polyurea-polysiloxane compounds of claim 1 , wherein the radicals ST 1 , ST 2 , ST 3 and ST 4 are divalent radicals, so that the polyurea-polyorganosiloxane compounds are linear in structure.
8. The polyurea-polysiloxane compounds of claim 2 , containing at least one radical of the formula:
wherein r is from 1 to 12.
9. The polyurea-polysiloxane compounds of claim 1 , containing at least one polyalkylene oxide radical.