Polymers having dual crosslinkable functionality and process for forming high performance nonwoven webs
US6117492A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1999 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Mar 30, 2019 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H1/587
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to polymers particularly suited for use in preparing high quality nonwoven products. The binders for the banquet incorporate at least two different but reactive functionalities and which are capable of reacting with two other multifunctional reactants each of which will react with at least one of the functionalities present in the polymer. The two functionalities copolymerized into these backbones include the acetoacetoxy moiety and a carboxylic acid group. The crosslinking is effected by adding a compound capable of reacting and crosslinking the acetoacetoxy moiety and another compound capable of reacting and crosslinking the carboxylic acid functionality. The former can be a dialdehyde such as glyoxal or glutaraldehyde. The second functionality is a polyaziridine functional compound such as N-aminoethyl-N-aziridilethylamine, N,N-bis-2-aminopropyl-N-aziridilethylamine, N-3,6,9-triazanonylaziridine, the bis and tris aziridines of di and tri acrylates of alkoxylated polyols, the trisaziridine of the triacrylate of the adduct of glycerine and propylene oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.