Self-extinguishing polyurethanes

Details Self-extinguishing polyurethanes Self-extinguishing polyurethanes

1991-01-18

1992-03-17

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...

524100, 524102, 524416, 524590, 524706, C08K 302

Patent

active

050969617

ABSTRACT:
Self-extinguishing polyurethanes are obtained by stepwise polyaddition of diisocyanates or polyisocyanates with polyols with the addition of a flameproofing agent comprising a phosphorus component and a nitrogen component as synergists. While the phosphorus component used is an ammonium polyphosphate which is sparingly soluble in water and, if desired, has been microencapsulated with a melamine/formaldehyde resin, the organic nitrogen component is selected from the group consisting

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patent: 4639331 (1987-01-01), Elsner et al.
patent: 4670483 (1987-06-01), Hall et al.
patent: 4772642 (1988-09-01), Staendeke
patent: 4818775 (1989-04-01), Teumac et al.
patent: 4853424 (1989-08-01), Staendeke et al.

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