High-molecular weight synthetic resins
US5233015A · kind A · utility
0Cited by
8References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1991 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Mar 21, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
High-molecular weight synthetic resins of polyhexamethylene adipates are disclosed with molecular weights greater than about 10,000, preferably greater than about 30,000, and a viscosity at 100.degree. C. of at least about 300 poise, preferably exceeding 6000. The polymerization is carried out with a ratio of diol/acid in the range 0.990 to about 1.03, preferably in the range of about 1.001 to about 1.01.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.