Performance polymeric fiber webs
AssigneeJohns Manville
InventorsKiarash Alavi Shooshtari, James Patrick Hamilton, Jawed Asrar
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Abstract
Provided are nonwoven polymeric fiber webs using an improved curable composition. Such curable composition comprises a reaction product of an amine and a reactant in the form of an amino-amide intermediate. To the amino-amide is added an aldehyde or ketone to form the curable binder composition. The composition when applied to the polymeric fibers is cured to form a water-insoluble polymer binder which exhibits good adhesion and thermo-dimensional stability.
Claims25
A nonwoven web of polymeric fibers comprising a binder comprised of a reaction product between (1) an aldehyde or ketone and (2) an amine group on an amino-amide intermediate, wherein the amino-amide intermediate also has an amide group that is formed by a conjugate addition reaction of a polyamine, having at least a first amine group and a second amine group, with an organic anhydride, and wherein a first amine group of the polyamine forms a covalent bond with a carbonyl group of the organic anhydride to form the amide group and a carboxylic acid group of the amino-amide intermediate.
A nonwoven web comprising:
- polymeric fibers;
- and
- a binder comprising, a reaction product of:
- (i) an aldehyde or ketone;
- and
- (ii) an amino-amide compound, wherein the amino-amide compound is formed by reacting an organic anhydride with 1,6-hexanediamine.
A nonwoven web comprising:
- polymeric fibers:
- and
- a binder comprising;
- (A) a reaction product of:
- (i) a reducing sugar;
- and
- (ii) an amino-amide compound, wherein the amino-amide compound further comprises a carboxylic acid group;
- and
- (B) a polyimide formed by a reaction product of an amide group on the amino-amide compound and the carboxylic acid group on the amino-amide compound.
Dependencies are inferred from the claim text.