Crosslinking catalyst comprising siloxane structural units
US9988482B2 · kind B2 · utility
1Cited by
9References
22Claims
0Family size
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Key dates
| Filing date | Jun 15, 2015 |
| Grant date | Jun 5, 2018 |
| Priority date | — |
| Expiry date | Jun 15, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2231/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A catalyst containing at least one amidine or guanidine group of formula (Ia) or (Ib), which is bound to a silicon atom of a siloxane residue. At room temperature, the catalyst is liquid and odorless. It is particularly suitable as a cross-linking catalyst for curable compositions, in particular for silane group-containing compositions. It is particularly good at accelerating the hardening of such compositions without impairing stability in storage, and displays little volatility but good compatibility. As a result, the compositions do not tend towards separation or migration or evaporation of the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.