Methods of making modified condensation polymers
US6417269B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2000 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Jul 17, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention pertains to methods for preparing modified condensation polymers wherein the steps include: preparing a polymer colloid system comprising a first polymer dispersed in a liquid continuous phase; introducing the polymer colloid system into a condensation reaction medium prior to or during the condensation reaction, wherein the condensation reaction medium comprises (1) a diacid, di-isocyanate, dialkyl carbonate, diaryl carbonate, dihalo carbonate or a mixture thereof, wherein the condensation reaction medium optionally comprises a diol component; and polymerizing the diol component and component (1), thereby forming a modified condensation polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.