Process for preparing binder-treated fiberglass exhibiting lower

Details Process for preparing binder-treated fiberglass exhibiting lower Process for preparing binder-treated fiberglass exhibiting lower

1995-06-13

1996-07-23

Beck, Shrive

Coating processes

With post-treatment of coating or coating material

Heating or drying

427421, 528139, 528146, 528164, B05D 302

Patent

active

055387616

ABSTRACT:
Emissions of formaldehyde and ammonia from urea-extended alkaline phenol/formaldehyde resole fiberglass binders are sharply reduced by using as a catalyst an emission-reducing effective amount of an acidifying agent which is a hydrolyzable inorganic salt, mineral acid, monomeric carboxylic acid or partial ester of a polycarboxylic acid such that the instantaneous pH of the binder solution is lower than 5.5. Use of the catalysts of the subject process also allow for additional urea-extension without degradation of fiberglass product physical properties. The preferred catalyst is aluminum sulfate in an amount of from 2.0 weight percent to about 4.0 weight percent based on the resin solids.

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