Cure-on-demand liquid sealant composition, process for the preparation thereof and uses thereof
US9850412B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2015 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | May 4, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a liquid sealant composition based on polysulphide, capable of curing on demand, and the process for preparing same, the liquid sealant composition including: (i) a polysulphide comprising an —SH end group, (ii) a crosslinking agent chosen from ethylenically unsaturated or acetylenically unsaturated compounds, the unsaturated ethylenic or unsaturated acetylenic functions of the crosslinking agent being chemically blocked with a blocking agent, and (iii) optionally, a catalyst. The present invention also relates to a process for coating a substrate with a composition according to the invention, and also to the cured sealant materials formed from this composition. Finally, the invention relates to the use of a liquid sealant composition according to the invention for the construction and/or the maintenance, and more particularly for the adhesive bonding and/or the protection, of vehicles and machines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.