Polyurethanes containing vinyl sequences, their production process and their application in the formulation of paints
US5270389A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 1992 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | May 18, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Said polyurethanes contain patterns of the type (Ia) or (Ib) with A=alkyl, cycloalkyl, aryl, arylalkyl or alkylaryl, or polyoxyalkylene or polyester; D=alkylene, cycloalkylene, arylene, alkylarylene or arylalkylene, and can contain at least one heteroatom; E=(i), in which case G represents the hydrocarbonated skeleton of an organic compound containing at least two alcohol functions, or (ii), in which case G represents the hydrocarbonated skeleton of an organic compound containing at least two isocyanate functions, and Pv=a polymer sequence from at least one vinyl monomer. The presence of vinyl sequences in said polyurethanes makes it possible, in particular, to improve the stability when exposed to sunlight (UV) of paints with a polyurethane base, thereby adding a sheen to said paints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.