Nontemperature sensitive memory foam of MDI system suitable for horizontal foaming process
AssigneeJiangsu Healthcare Co., Ltd.
InventorsZhanggen Ni, Tao Lin
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Abstract
An MDI system non-temperature sensitive memory sponge suitable for a flat foam foaming process is made by using a polyol mixture, which includes a polyether polyol and a polymer polyol, to react with an isocyanate and an auxiliary agent mixture that includes: a chain extender, a foaming agent, a pore adjusting agent, and a catalyst. The polyether polyol includes a polyoxypropylene glycerol with a molecular weight of 700 and a polyoxypropylene trihydroxy ether with a molecular weight of 4800, the polymer polyol includes a graft polyether, and the isocyanate is methylene diphenyl diisocyanate.
Claims8
A methylene diphenyl diisocyanate (MDI) system-based, non-temperature sensitive memory sponge, made by reacting a polyol mixture, which comprises a polyether polyol and a polymer polyol, with an isocyanate and an auxiliary agent mixture comprising:
- a foaming agent, a pore adjusting agent, and a catalyst, wherein said polyether polyol is polyoxypropylene glycerol with a molecular weight of 700, wherein said polymer polyol is a graft polyether, and wherein said isocyanate is methylene diphenyl diisocyanate,
- wherein the polyol mixture further comprises a polyoxypropylene trihydroxy ether with a molecular weight of 4800, wherein the auxiliary agent mixture further comprises a polyol chain extender,
- wherein a weight portion of the foaming agent is 1.5-3 parts by weight per 100 parts by weight of the polyol mixture.
A methylene diphenyl diisocyanate (MDI) system-based, non-temperature sensitive memory sponge, wherein the MDI is prepared by reacting a polyol mixture with methylene diphenyl diisocyanate and an auxiliary agent mixture that comprises:
- a foaming agent, a pore adjusting agent, a catalyst, and polyol chain extender;
- wherein the polyol mixture comprises a polyoxypropylene glycerol with a molecular weight of 700, a polyoxypropylene trihydroxy ether with a molecular weight of 4800, and a polymer polyol.
Dependencies are inferred from the claim text.