Precision polyurethane manufacture
US8784712B2 · kind B2 · utility
0Cited by
14References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2001 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Jul 30, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for making a polyurethane, comprising reacting a multifunctional isocyanate, a polyol and, optionally, a chain extender, wherein at least two reagents selected from the isocyanate, the polyol, the chain extender, any mixture thereof and any pre-polymer formed therefrom, are intensively mixed prior to being reactively extruded, to form a polyurethane having a predetermined stoichiometry and thermal history. The polyurethanes obtained by such a process are of highly consistent composition and are, thus, especially suitable for use in the medical device industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.