Title: Fire-retardant particle board and binder therefor from aminoplast with ammonium polyphosphate-formaldehyde product

Abstract: Novel stable-in-use aminoplast resin binder solutions comprising aqueous solutions of predominantly a urea-formaldehyde resin having a formaldehyde to urea ratio of less than 2.0, from about 40 to 56% by weight dissolved ammonium polyphosphate reacted with 5 to 12.5 percent by weight formaldehyde and not more than 30% by weight water. Preferred aminoplast resin binder solutions also contain a methylolated melamine-formaldehyde resin. A novel process for the production of the stable aminoplast resin binder solutions containing high percentages of ammonium polyphosphates and suitable for production of fire-retardant particle board is disclosed.

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Inventors: Brown, Gordon E. (Eugene, OR, US)

Application Number: 503890
Filing Date: 1974-09-06
Publication_date: 1976-02-17
Assignee: Monsanto Company (St. Louis, MO)
Primary Class(es): 524/127 260/DIG24, 428/528, 428/921, 524/597, 525/472
Other Classes:
US Patent Ref:

2193630	Mar, 1940	Howald	260/29.
2312210	Feb, 1943	Dearing	260/29.
2348244	May, 1944	Dearing	260/29.
2378724	Jun, 1945	Oldham	260/29.
2402032	Jun, 1946	Fischer	260/29.
2582961	Jan, 1952	Burnell et al.	260/29.
2625524	Jan, 1953	Kvalnes et al.	260/29.
3372131	Mar, 1968	Rohlfs et al.	260/69.
3839239	Oct, 1974	Godfried	260/2.

Other Refs:
Primary Examiner: Tillman, Murray
Assistant Examiner: Koeckert, A. H.
Attorney: Nelson; Joseph S., Grattan; Edward P., Logomasini; James C.