Production of polyester tire yarn polyglycol ether spin finish composition
US4019990A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1975 |
| Grant date | Apr 26, 1977 |
| Priority date | — |
| Expiry date | Jul 23, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/84
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
It has been suggested that certain polyglycol ethers, in particular mixed polyoxyethylated-polyoxypropylated monoethers, are useful as spin finishes in the production of polyester tire yarns. Polyglycol ethers having a relatively low molecular weight of about 300 to 1,000 make the best lubricants; however, their effectiveness is significantly diminished by volatilization loss during high temperature processing of the tire yarn. It has now been found that said volatilization loss is greatly decreased by including in the finish a small percentage of certain antioxidant compounds. The particular antioxidant compound used has been found to be very critical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.