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US5169979A Expired / Lapsed US ⏱️ 0.0 years remaining

Curing component, and the use thereof

Assignee: Hoechst AG
•
Filing: 1990-11-30
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Granted: 1992-12-08
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Expires: 2010-11-30
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Abstract

Abstract The invention relates to a curing component (A) containing active CH groups, which contains at least two groups of the formula (I) ##STR1## or structural units of the formula (I') or (I") ##STR2## in which: A denotes ##STR3## X and Y are identical or different and denote ##STR4## CO 2 R 1 , CN, NO 2 , CONH 2 , CONR 1 H or CONR 1 R 1 , where the R 1 radicals may be identical or different and represent a hydrocarbon radical, preferably an alkyl radical having 1 to 12 carbon atoms, which may also be interrupted by oxygen or an N-alkyl radical, with the proviso that only one of the two radicals X and Y may represent the NO 2 group; A' denotes ##STR5## X' and Y' are identical or different and denote ##STR6## Curable mixtures of (A) and a Michael acceptor (B) and, if appropriate diluents and customary additivies cure rapidly even at low temperatures and are suitable, in particular for surface-coating preparations.

Inventors

  • 👤 Uwe Kubillus
  • 👤 Gerhard Brindopke
  • 👤 Helmut Plum

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 15:56
CPC Classifications
C; C08; C08L; C08L63/00; C08L63/10; C08G; C08G59/00; C08G59/18; C08G59/40; C08G63/00; C08G63/91; C08J; C08J3/00; C08J3/24

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 160 words
A curing component (A) containing active CH groups, which contains at least two groups of the formula (I) ##STR22## or structural units of the formula (I') or (I") ##STR23## in which: A denotes ##STR24## the latter group being bonded to the CH group via the carbon atom; X and Y are identical or different and denote ##STR25## CO 2 R 1 , CN, NO 2 , CONH 2 , CONR 1 H or CONR 1 R 1 , where the R 1 radicals may be identical or different and represent a hydrocarbon radical, preferably an alkyl radical having 1 to 12 carbon atoms, which may also be interrupted by oxygen or an N-alkyl radical, with the proviso that only one of the two radicals X and Y may represent the NO 2 group; A' denotes ##STR26## where the latter group is bonded to the CH group via the carbon atom; X' and Y' are identical or different and denote ##STR27##
Claim 2
Dependent Claim 160 words
A curing component (A) containing active CH groups, which contains at least two groups of the formula (I) ##STR22## or structural units of the formula (I') or (I") ##STR23## in which: A denotes ##STR24## the latter group being bonded to the CH group via the carbon atom; X and Y are identical or different and denote ##STR25## CO 2 R 1 , CN, NO 2 , CONH 2 , CONR 1 H or CONR 1 R 1 , where the R 1 radicals may be identical or different and represent a hydrocarbon radical, preferably an alkyl radical having 1 to 12 carbon atoms, which may also be interrupted by oxygen or an N-alkyl radical, with the proviso that only one of the two radicals X and Y may represent the NO 2 group; A' denotes ##STR26## where the latter group is bonded to the CH group via the carbon atom; X' and Y' are identical or different and denote ##STR27##
Claim 3
Dependent Claim 59 words
The curing component as claimed in claim 1, which has the formula (II) ##STR28## in which X, Y and A have the above meaning, R 2 represents the radical of a polyol R 2 (OH) n (A= ##STR29## or the radical of a polycarboxylic acid R 2 (CO 2 H) n (A= ##STR30## and n denotes at least two.
Claim 4
Dependent Claim 29 words
A curing component as claimed in claim 2, wherein R 2 denotes the radical of a polyol having 2 to 12 carbon atoms, and n represents 2 to 4.
Claim 5
Dependent Claim 29 words
A curing component as claimed in claim 2, wherein R 2 denotes the radical of a polyol resin R 2 (OH) n in which n is 2 to 200.
Claim 6
Dependent Claim 31 words
A curing component as claimed in claim 2, wherein R 2 represents the radical of a polycarboxylic acid R 2 (CO 2 H) n in which n is 2 to 4.

References Cited (Backward Citations)

US4567004A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-12-08 1996-06-08 1996-12-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-12-08 2000-06-08 2000-12-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-12-08 2004-06-08 2004-12-08 $7700.00 Window Closed / Lapsed

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