Polyester elastomeric particles
US4021507A · kind A · utility
4Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 15, 1974 |
| Grant date | May 3, 1977 |
| Priority date | — |
| Expiry date | Oct 15, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F283/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyester elastomeric particle comprising a saturated elastomeric core, an intermediate layer covalently bound to the elastomeric core said intermediate layer comprising a condensation polymer of a dicarboxylic acid, a triol, and a diol wherein at least one of the components of the intermediate layer contains a tertiary hydrogen atom and an addition polymer surface layer grafted on to the intermediate layer wherein the elastomeric core is capable of absorbing not more than 150% w/w of xylene at ambient temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.