Amorphous and/or semicrystalline copolyesters containing .beta.-hydroxyalkylamide groups, method for their manufacture, and utilisation of the esters
US5889126A · kind A · utility
2Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1997 |
| Grant date | Mar 30, 1999 |
| Priority date | — |
| Expiry date | Jul 11, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D167/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to Amorphous and/or semicrystalline copolyesters containing .beta.-hydroxyalkylamide groups according to formula (I) ##STR1## whereinP=polymer chain of the polyester PA1 R1=alkyl residues with 1-5 atoms or hydrogen or ##STR2## R2=alkyl residues with 1-5 C-atoms or hydrogen, R3=alkyl residues and 1-5 C-atoms or hydrogen, and PA1 n.gtoreq.2, with a molecular weight (Mn) of 300 to 15,000 and a hydroxyl value of 10 to 400 mg KOH/g!.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.