Patent · US Active

Polyimide oligomers

US8901274B2 · kind B2 · utility

2Cited by

7References

16Claims

0Family size

Assignee

LONZA LTD · CH

Inventors

Sajal Das · Berkeley Heights, US
Vilas M. Chopdekar · Edison, US
Megan B. Casey · Lehighton, US

Key dates

Filing date	Aug 24, 2012
Grant date	Dec 2, 2014
Priority date	—
Expiry date	Mar 8, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G73/127
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Polyimide oligomers of the general formula:M-(Z—Y—X—Y—Z)n-Mwherein n is an integer of 1 to 20; X comprises an aromatic diamine containing 2-4 aryl moieties, each of which contains 0-4 substituents; Z is independently the same as X or is a different aromatic diamine containing 1-4 aryl moieties, each of which contains 0-4 substituents; Y comprises an aromatic dianhydride containing 1-4 aryl moieties, each of which contains 0-4 substituents; and M is independently the same as Y or is a substituted or unsubstituted anhydride, a substituted or unsubstituted dianhydride, a substituted or unsubstituted bisimide, or a substituted or unsubstituted monomeric or oligomeric phthalonitrile.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.