Method for using disulfide reactive chemical on polyurethane foam to improve reprocessability in hot press process with superior recycling rate
AssigneesFord Motor Company, Washington State University
InventorsAlper Kiziltas, Deborah Frances Mielewski, Wangcheng Liu, Jinwen Zhang
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Abstract
A recyclable polyurethane foam is produced by reacting a disulfide reactive chemical-based polyol-containing composition and an isocyanate composition. The polyurethane foam may include a molar ratio of the disulfide reactive chemical of greater than or equal to about 2:1 mol %, 4:1 mol %, or 6:1 mol %, wherein the ratio equates to the molar ratio of hydroxyl groups of the disulfide reactive chemical versus the molar ratio of hydroxyl groups of the polyol.
Claims20
A polyurethane foam produced by reacting a polyol-containing composition and an isocyanate composition, wherein the polyol-containing composition comprises greater than or equal to about 9.33 parts by weight percent disulfide reactive chemical to less than or equal to about 28 parts by weight percent disulfide reactive chemical.
A polyurethane foam produced by reacting a polyol-containing composition and an isocyanate composition, wherein the polyurethane foam comprises greater than or equal to about 5.5 parts by weight percent 2-hydroxyethyl disulfide and the polyol-containing composition comprises a catalyst at greater than or equal to about 0.7 parts by weight percent to less than or equal to about 0.87 parts by weight percent.
A polyurethane foam produced by reacting a polyol-containing composition and an isocyanate composition, wherein the polyol-containing composition comprises 2-hydroxyethyl disulfide, a catalyst at greater than or equal to about 0.7 parts by weight percent, and a co-catalyst at greater than or equal to about 0.35 parts by weight percent.
Dependencies are inferred from the claim text.