Cross-linked thermoplastic polyurethane/polyurea and method of making same
US7785522B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 26, 2009 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | May 26, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2410/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for forming a cross-linked thermoplastic polymer is disclosed herein. The cross-linked thermoplastic polymer is formed by heating a first mixture containing a thermoplastic urethane base material, a monomeric diisocyanate comprising between 1 to 10% of the total weight of the first mixture, and a second mixture of a first diamine and a second diamine comprising between 1 to 10% of the total weight of a total reaction product. The heated first mixture, which is flowable, is injected into at least one injection molding device, with the second mixture injected at predetermined intervals to create a homogeneous reaction product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.