Patent · US Active

Polyurethane prepolymers containing alkoxysilane groups and allophanate and/or biuret groups

US7812087B2 · kind B2 · utility

6Cited by
19References
11Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 30, 2006
Grant dateOct 12, 2010
Priority date—
Expiry dateAug 30, 2026

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08G18/755
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

The present invention relates to modified alkoxysilane-functional polyurethanes containing allophanate and/or biuret groups, wherein at least 10 mol % of the allophanate and/or biuret groups are formed from a monoisocyanate of the formula R—NCO, wherein R is an optionally heteroatom-containing alkyl, aralkyl or aryl radical having up to 20 carbon atoms, provided that these radicals do not contain any other reactive groups with the exception of the NCO group that is part of the allophanate structure and any alkoxysilyl groups present. The present invention also relates to a process for preparing alkoxysilane-functional prepolymers by

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.