Process for preparing a particle board using a self-releasing bi

Details Process for preparing a particle board using a self-releasing bi Process for preparing a particle board using a self-releasing bi

1981-03-18

1983-03-08

Anderson, Philip E.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

264122, 264300, 528 48, B29J 502

Patent

active

043760880

ABSTRACT:
The use of polyisocyanates as binders in the preparation of particle boards is subject to the drawback that the boards exhibit a tendency to adhere to the face of the platens used in their formation. This problem is minimized by incorporating minor amounts of a mixture of certain organic sulfonic acids, hydrogen sulfates, salts and derivatives thereof, into the polyisocyanate to be used as binder. The polyisocyanates and the sulfonic acids, hydrogen sulfates, salts and derivatives are applied to the particles separately, or after preblending one with the other. Whether the components are applied separately or in combination one with the other, they can each be applied either neat of in the form of an emulsion or emulsions.

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