Polyphosphoramidite oligomers and stabilizer compositions thereof
US4522735A · kind A · utility
13Cited by
3References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1983 |
| Grant date | Jun 11, 1985 |
| Priority date | — |
| Expiry date | Jun 17, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G79/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Amines are reacted with phosphorous trichloride to form N-dichlorophosphinoamines that are then reacted with a bisphenol in about equimolar amounts to provide polyphosphoramidite oligomers. The polyphosphoramidite oligomers are effective as stabilizers for polymers such as polyolefins, and form even more efficient stabilizer combinations with hydroxyphenylalkyleneyl isocyanurates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.