Oxynitrate additive for polyurethane foams

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...

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521170, 521174, C08J 900

Patent

active

047941278

ABSTRACT:
In a process for producing polyurethane foam by allowing a reaction mixture comprising at least one polyisocyanate component and at least one polyfunctional active hydrogen component to react, a compound selected from the group consisting of oxynitrate salts of metals of Group IV B of the Mendeleef periodic table, is employed as a cell opening additive. Such oxynitrate salts are also effective to modify tin tolerance of urethane formulations. The oxynitrate compounds are effective in both free rise and molded foam processes. Cell opening is accomplished, for instance, by reacting toluene diisocyanate with a polypropoxy/polyethoxy polyol in the presence of an oxynitrate salt of a Group IV B metal, such as zirconium oxynitrate, to form a foam having more open cells than a similar foam without oxynitrate.

REFERENCES:
patent: 3171820 (1965-03-01), Volz
patent: 3454504 (1969-07-01), Murai et al.
patent: 3627565 (1971-12-01), Plueddemann
patent: 3673159 (1972-06-01), Bijkhuizen et al.
patent: 3793237 (1974-02-01), Watkinson
patent: 3884848 (1975-05-01), Ricciardi et al.
patent: 3920587 (1975-11-01), Watkinson
patent: 3941849 (1976-03-01), Herold
patent: 4139660 (1979-02-01), Tur
patent: 4200701 (1980-04-01), Wetton et al.
patent: 4374760 (1983-02-01), Charles
Rossmy et al., in "Cell-Opening in One-Shot Flexible Polyether Based Polyurethane Foams. The Role of Silicone Surfactant and its Foundation in the Chemistry of Foam Formation", J. Cellular Plastics, Jan./Feb., 1977 pp. 26-35.

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