Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872880 | Process for the dyeing of polymers of propylene, butene-1 and 4-methyl-pentene-1 using basic dye in an aqueous dye bath | — | 1989-10-10 |
| 4802886 | Continuous process for the dyeing of polymers | — | 1989-02-07 |
| 4801656 | Process for sulphonating molten polyolefins | — | 1989-01-31 |