Low amine emission polyurethane foam
OwnerGiuliano Guidetti, Angelo Schiavone +1inventors
InventorsGiuliano Guidetti, Angelo Schiavone, Luigi Pedroni
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Abstract
It is found that a polyurethane foam having significantly reduced or negligible amine emissions can be obtained by reacting a polyol with a polyisocyanate in the presence of a blowing agent being a carbamate, obtained from contacting carbon dioxide with an amine or alkanolamine, and further in the presence of a non-fugitive amine catalyst. A process is disclosed which has particular utility for the preparation of integral skinned foam, such as automotive steering wheels, exhibiting attractive physical performance and low volatile amine emissions.
Claims20
A process for preparing a polyurethane foam, having a reduced volatile emission, by react a polyisocyanate with a polyether polyol or polyester polyol in the presence of a blowing agent and a urethane-promoting catalyst wherein:
- a) the blowing agent comprises a carbamate adduct obtained by contacting carbon dioxide with an amine or alkanolamine;
- and
- b) the catalyst comprises a non-fugitive amine catalyst.
A two component system suitable for manufacture of low emission polyurethane foam having as first component a polyisocyanate and as second component a polyol composition, said composition comprising
- a) a polyether or polyester polyol;
- b) a carbamate adduct obtained by contacting carbon dioxide with an amine or alkanolamine;
- and
- c) a urethane promoting catalyst being a non-fugitive amine.
A polyol composition suitable for reacting with a polyisocyanate to give a low emission polyurethane foam wherein said composition comprises:
- a) a polyether or polyester polyol;
- b) a carbamate adduct obtained by contacting carbon dioxide with an amine or alkanolamine;
- and
- c) a urethane promoting catalyst being a non-fugitive amine.
Dependencies are inferred from the claim text.