Method for flexibilizing glass fiber nonwoven bound with...

Details Method for flexibilizing glass fiber nonwoven bound with... Method for flexibilizing glass fiber nonwoven bound with...

C - Chemistry, Metallurgy

03

C

C03C 25/34 (2006.01) D04H 1/64 (2006.01) D21H 13/26 (2006.01) D21H 17/37 (2006.01) D21H 17/49 (2006.01) H05K 1/03 (2006.01)

Patent

CA 2427303

A method for flexibilizing a glass fiber nonwoven bound with a cured urea formaldehyde resin binder by admixing water, a cured urea formaldehyde resin, and a water-soluble polymer comprising a polymerized ethylenically unsaturated carboxylic acid monomer, the polymer having a weight average molecular weight of from about 65,000 to about 95,000; applying the aqueous admixture to a glass fiber nonwoven; and heating the admixture to at least about 120°C. Also disclosed are glass fiber nonwovens made using the method.

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