Polyhydantoins containing sulphone groups

US4849492A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Gerhard Heywang · Bensberg, DE
• Friedrich Jonas · Aachen, DE
• Rudolf Merten · Leverkusen, DE
• Werner Schmidtberg · Leverkusen, DE

Key dates

• Filing date: Sep 29, 1988
• Grant date: Jul 18, 1989
• Expiry date: Sep 29, 2008

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05K1/0333
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyhydantoins of the general formula ##STR1## in which X stands for a bivalent aliphatic, aromatic or araliphatic radical, PA1 R.sup.1 denotes --CH.sub.2 --, ##STR2## --O--, --SO.sub.2 --, --C(R.sup.5,R.sup.6) R.sup.2 and R.sup.3 are identical or different and stand for hydrogen, C.sub.1 -C.sub.6 -alkyl or together stand for --(CH.sub.2).sub.4 --or --(CH.sub.2).sub.5 --and PA1 R.sup.5 and R.sup.6 are identical or different and stand for C.sub.1 -C.sub.6 -alkyl or together stand for --(CH.sub.2).sub.4 --or --(CH.sub.2).sub.5 --, are valuable high temperature-resistant polymers, which have utility in particular as film materials.