Preparation of aqueous nonwoven binders of low formaldehyde emis

Details Preparation of aqueous nonwoven binders of low formaldehyde emis Preparation of aqueous nonwoven binders of low formaldehyde emis

1989-05-02

1991-05-21

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

528245, C08G 1212

Patent

active

050176412

ABSTRACT:
Aqueous nonwoven binders that give reduced formaldehyde emission on curing are based on condensation products of urea or derivatives thereof, formaldehyde and glyoxal in a molar ratio, based on the solid binder, of from 1.5 to 2.5 moles of formaldehyde and from 0.1 to 0.5 mole of glyoxal per mole of the total urea used.

REFERENCES:
patent: 2574114 (1951-11-01), Lehmann et al.
patent: 2876062 (1959-03-01), Torke et al.
patent: 3049446 (1962-08-01), Goldstein et al.
patent: 3801546 (1974-03-01), Petersen et al.
patent: 3862224 (1975-01-01), Petersen et al.
patent: 4198462 (1980-04-01), Dixon et al.

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