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US 6,552,155 B1Granted
Polyaldimines of oligomeric aminobenzoic acid derivatives, and their use for preparation of moisture-curable, storage-stable, one-part polyreas
AssigneeKenneth I. Sawyer
InventorsArie Gutman, Gennadiy Nisnovich, Igor Zaltzman, Lev Judovich, Vladimir Kuznetsov
Life of this patent
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Abstract
The invention relates to polyaldimines of formula [1] and their use within moisture curable one part polyurea compositions. wherein j is an integer of 3 to 30 and R2 is unsubstituted homocyclic or heterocyclic aryl radical or alkyl, alkoxy, alkylthio or halogen substituted homocyclic or heterocyclic aryl radical.
Claims23
Compounds of formula [1]
- wherein j is an integer of 3 to 30 and R2 is unsubstituted homocyclic or heterocyclic aryl radical or alkyl, alkoxy, alkylthio or halogen substituted homocyclic or heterocyclic aryl radical.
A method for the preparation of compounds of formula [1]:
- comprising reacting a poly(1,4-butanediol)bis(4-aminobenzoate) of formula [2]
- with an aldehyde represented by formula [3]
- R2CH═O [3]
- wherein in formulas [1] and [2], j is an integer of 3 to 30 and in formula [1] and [3], R2 is an unsubstituted homocyclic or heterocyclic aryl radical or alkyl, alkoxy, alkylthio or halogen substituted homocyclic or heterocyclic aryl radical.
1 more element
A one part composition comprising of:
- (i) a compound or mixture of compounds of formula [1]:
- wherein j is an integer of 3 to 30 and R2 is unsubstituted aryl or heterocyclic aryl radical or alkyl, alleoxy, alkylthio or halogen substituted aryl or heterocyclic aryl radical;
- (ii) an aromatic polyisocyanate and/or a polyurethane/urea prepolymer having terminal aromatic isocyanate groups;
- and
- (iii) a protic acid or salts thereof.
2 more elements
Dependencies are inferred from the claim text.