Low formaldehyde emitting crosslinking agents, process of prepar

Details Low formaldehyde emitting crosslinking agents, process of prepar Low formaldehyde emitting crosslinking agents, process of prepar

1997-08-15

1998-10-13

Gupta, Yogendra N.

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

Synthetic resins

From aldehyde or derivative thereof as reactant

525509, 528248, C08G 924

Patent

active

058213236

ABSTRACT:
Described is a liquid, partially alkoxymethylated melamine crosslinker composition having from about 2.6 to about 4.6 moles of combined formaldehyde per mole of melamine, from about 1.4 to about 4.4 moles of alkyl per mole of melamine, from about 1.3 to about 3.4 moles of NH per mole of melamine, a free formaldehyde level of less than about 0.5 weight percent based on 100 percent solids, and an N-methylol level of less than about 6.0 weight percent; processes for its preparation; a low formaldehyde emitting curable composition containing the crosslinker; as well as a method of coating a substrate and substrates so coated.

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