Polyester containing 2-methyl-1,3-propylene terephthalate units
US4381379A · kind A · utility
11Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1982 |
| Grant date | Apr 26, 1983 |
| Priority date | — |
| Expiry date | Mar 22, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/183
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polytetramethyleneterephthalate is modified with incorporation of 2-methyl-1,3-propanediol. The diol component of the polyester comprises 1 to 99 mol % of tetramethylene glycol and 99 to 1 mol % of 2-methyl-1,3-propanediol. Alternatively polytetramethylene terephthalate is combined with 0.1 to 25 wt. %, based thereon, of poly-2-methyl-1,3-propylene terephthalate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.