Process for the preparation of silylated polymers employing a backmixing step
US9828459B2 · kind B2 · utility
1Cited by
18References
20Claims
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Key dates
| Filing date | Aug 11, 2015 |
| Grant date | Nov 28, 2017 |
| Priority date | — |
| Expiry date | Nov 18, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/524
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A continuous process for preparing a silylated polymer comprising a silylation step where a prepolymer having reactive functional groups, a first intermediate product, is reacted continuously with a silylating agent in an endcapping tubular reaction unit to form a second intermediate product, and where at least a portion of the second intermediate product is backmixed continuously with the first intermediate product to form the silylated polymer. The continuous process may further comprise a stabilization step, a quenching step or both a stabilization step and a quenching step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.