← Back to Patent Explorer
US4709047A Expired / Lapsed US ⏱️ 0.0 years remaining

Substituted unsaturated, sulfonyloxy group-containing bicyclic imides as catalysts for cationic polymerization

Assignee: Novartis Corp
•
Filing: 1986-01-17
•
Granted: 1987-11-24
•
Expires: 2006-01-17
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Imides of formula I ##STR1## wherein R 1 and R 2 are independently hydrogen or methyl, R 3 is a direct bond, alkylene, oxaalkylene, cycloalkylene, arylene or arylene-T-arylene where T is methylene or isopropylidene, and R 4 alkyl, cycloalkyl, aryl, benzyl or alkaryl are suitable as catalysts for the crosslinking of specific unsaturated imides.

Inventors

  • 👤 Alfred Renner
  • 👤 Christian Vonlanthen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 15:20
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/56; C07D209/58; C07D209/72; C07D209/76; C08; C08F; C08F12/00; C08F12/02; C08F12/32

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 121 words
An imide of formula I ##STR17## wherein each of R 1 and R 2 independently of the other is hydrogen or methyl, R 3 is a direct bond, a straight or branched chain alkylene of 2 to 20 carbon atoms, ##STR18## where m is 1 to 8, cycloalkylene of 5 to 8 carbon atoms, bi-(cyclohexylene)methane, 2,2-bis-(cyclohexylene)-propane, decahydronaphthylene, phenylene, naphthylene, said phenylene or said naphthylene substituted by one or more C 1 -C 4 -alkyl groups, or a group of the formula II ##STR19## wherein T is methylene, isopropylidene, CO, O, S or SO 2 , and R 4 is C 1 -C 12 alkyl, C 5 -C 8 cycloalkyl, C 6 -C 10 aryl, benzyl or C 7 -C 12 -alkaryl.
Claim 2
Dependent Claim 121 words
An imide of formula I ##STR17## wherein each of R 1 and R 2 independently of the other is hydrogen or methyl, R 3 is a direct bond, a straight or branched chain alkylene of 2 to 20 carbon atoms, ##STR18## where m is 1 to 8, cycloalkylene of 5 to 8 carbon atoms, bi-(cyclohexylene)methane, 2,2-bis-(cyclohexylene)-propane, decahydronaphthylene, phenylene, naphthylene, said phenylene or said naphthylene substituted by one or more C 1 -C 4 -alkyl groups, or a group of the formula II ##STR19## wherein T is methylene, isopropylidene, CO, O, S or SO 2 , and R 4 is C 1 -C 12 alkyl, C 5 -C 8 cycloalkyl, C 6 -C 10 aryl, benzyl or C 7 -C 12 -alkaryl.
Claim 3
Dependent Claim 72 words
An imide of formula I according to claim 1, wherein R 3 is a direct bond, an alkylene of 2 to 10 carbon atoms, a --CH 2 CH 2 --(OCH 2 CH 2 )-- m where m is 1 or 2, cycloalkyene of 5 to 6 carbon atoms, phenylene, naphthylene or said phenylene substituted by C 1 -C 4 alkyl, or a group of formula II wherein T is methylene or isopropylidene.
Claim 4
Dependent Claim 19 words
An imide of formula I according to claim 1, wherein each of R 1 and R 2 is hydrogen.
Claim 5
Dependent Claim 34 words
An imide of formula I according to claim 1, wherein R 4 is C 1 -C 6 alkyl, C 5 -C 6 cycloalkyl, C 6 -C 10 aryl or C 7 -C 12 alkaryl.
Claim 6
Dependent Claim 33 words
An imide of formula I according to claim 1, wherein R 3 is a direct bond or the radical --CH 2 CH 2 --, ##STR20## R 4 is methyl, phenyl, 2-naphthyl or p-tolyl.
Claim 7
Dependent Claim 40 words
An imide of formula I according to claim 1, wherein each of R 1 and R 2 is hydrogen, R 3 is a direct bond or the radical --CH 2 CH 2 -- and R 4 is methyl or phenyl.
Claim 8
Dependent Claim 30 words
An imide of formula I according to claim 1, wherein each of R 1 and R 2 is hydrogen, R 3 is a direct bond and R 4 is phenyl.
Claim 9
Dependent Claim 30 words
An imide of formula I according to claim 1, wherein each of R 1 and R 2 is hydrogen, R 3 is a direct bond and R 4 is methyl.
Claim 10
Dependent Claim 34 words
An imide of formula I according to claim 1, wherein each of R 1 and R 2 is hydrogen, R 3 is the radical --CH 2 CH 2 -- and R 4 is methyl.

References Cited (Backward Citations)

DE943050C Cited
US3105839A Cited
US3450711A Cited
US4513003A Cited
US4515962A Cited
US4604437A Cited
EP0166693A2 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-11-23 1991-05-25 1991-11-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-11-23 1995-05-25 1995-11-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-11-23 1999-05-25 1999-11-24 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag