Olin Corporation

Oliver J Proulx

Alan H Milford

Maurice C Raes

A stable dispersion is prepared by first forming a dispersion of a polymer derived from TDI residue in an organic solvent, adding a high molecular weight polyol and then removing the solvent to produce a dispersion of the polymer in the high molecular weight polyol. In forming the dispersion in the solvent, TDI residue is reacted with an active hydrogen containing compound selected from the group consisting of an amine compound, a short-chain polyol and mixtures thereof. The stable dispersion is used in preparing a wide variety of polyurethane products, such as foams and elastomers.

Preparation of a stable dispersion from TDI residue and its use in the

An improvement in the manufacture of flexible densified polyurethane foam wherein the partially cured freely risen foam is fed through a crush conveyor to minimize the density gradient throughout the vertical cross section. The crush conveyor includes an upper crushing section which is arcuate and has a radius of a dimension such that the ratio of the radius of the arc to height of the partially cured freely risen foam is 1.1 to 1 or greater. The crush conveyor has a bottom crushing section which may be arcuate with a radius of a dimension such that the ratio of its radius to the height of the partially cured freely risen foam is also 1.1 to 1 or greater. The radius of the bottom arcuate crushing section may be the same or larger than the radius of the top arc. As an alternative, the bottom crushing section may be planar and may be horizontal, or inclined with respect to the horizontal.

Process for manufacturing flexible densified polymethane foam

Apparatus for crusing partially cured freely risen foam

Apparatus for crushing partially cured freely risen foam

An improvement in the manufacture of flexible densified polyurethane foam wherein the partially cured freely risen foam is fed through a crush conveyor to minimize the density gradient throughout the vertical cross section. The crush conveyor includes an upper crushing section which is arcuate and has a radius of a dimension such that the ratio of the radius of the arc to height of the partially cured freely risen foam is 1.1 to 1 or greater. The crush conveyor has a bottom crushing section which may be arcurate with a radius of a dimension such that the ratio of its radius to the height of the partially cured freely risen foam is also 1.1 to 1 or greater. The radius of the bottom arcuate crushing section may be the same or larger than the radius of the top arc. As an alternative, the bottom crushing section may be planar and may be horizontal, or inclined with respect to the horizontal.

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Wallingford, CT, United States of America

Oliver J Proulx