Reactive catalyst compositions for improving water blown polyurethane foam performance
AssigneeAir Products and Chemicals, Inc.
InventorsLisa Ann Mercando, Mark Leo Listemann, Michael John Kimock
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Abstract
The present invention provides a reactive catalyst composition for making a water blown flexible polyurethane foam. The catalyst composition comprises a tertiary amino alkyl urea and/or bis(tertiary amino alkyl) urea in combination with either a gelling catalyst or blowing catalyst. The use of such catalyst composition improves the physical properties of the polyurethane foam.
Claims11
In a method for preparing a flexible polyurethane foam by reacting an organic polyisocyanate and a polyol in the presence of water as a blowing agent, a cell stabilizer and a catalyst composition, the improvement for reducing the force-to-crush and/or improving airflow of the foam which comprises using a catalyst composition comprising a urea catalyst selected from the group consisting of 2-dimethylaminoethyl urea;
- N,N′-bis(2-dimethylaminoethyl) urea;
- N,N-bis(2-dimethylaminoethyl) urea;
- 3-dimethylamino-propyl urea;
- N,N′-bis(3-dimethylaminopropyl) urea;
- N,N-bis(3-dimethylaminopropyl) urea;
- 1-(N-methyl-3-pyrrolidino)methyl urea;
- 1,3-bis(N-methyl-3-pyrrolidino)methyl urea;
- 3-piperidinopropyl urea;
- N,N′-bis(3-piperidinopropyl) urea;
- 2-piperidinoethyl urea;
- N,N′-bis(2-piperidinoethyl) urea;
- and mixtures thereof, in conjunction with a blowing catalyst which is not a urea compound.
In a method for preparing a flexible polyurethane foam by reacting an organic polyisocyanate and a polyol in the presence of water as a blowing agent, a cell stabilizer and a catalyst composition, the improvement for improving the load bearing properties of the foam which comprises using a catalyst composition comprising a urea catalyst selected from the group consisting of 2-dimethylaminoethyl urea;
- N,N′-bis(2-dimethylaminoethyl) urea;
- N,N-bis(2-dimethylaminoethyl) urea;
- 3-dimethylaminopropyl urea;
- N,N′-bis(3-dimethylaminopropyl) urea;
- N,N-bis(3-dimethylaminopropyl) urea;
- 1-(N-methyl-3-pyrrolidino)methyl urea;
- 1,3-bis(N-methyl-3-pyrrolidino)methyl urea;
- 3-piperidinopropyl urea;
- N,N′-bis(3-piperidinopropyl) urea;
- 2-piperidinoethyl urea;
- N,N′-bis(2-piperidinoethyl) urea;
- and mixtures thereof, in conjunction with a gelling catalyst selected from the group consisting of triethylenediamine;
- quinuclidine;
- a substituted quinuclidine;
- a substituted pyrrolizidine and a substituted pyrrolidine.
In a method for making a polyurethane flexible foam having a 1-3 lb/ft3 (16-48 kg/m3) density by reacting the following components in parts by weight (pbw):
- Polyol 20-100 Polymer Polyol 80-0 Silicone Surfactant 1-2.5 Water (Blowing Agent) 2-4.5 Crosslinker 0.5-2 Catalyst Composition 0.5-2 Isocyanate Index 70-115
- the improvement for reducing the force-to-crush and/or improving airflow of the foam which comprises using a catalyst composition comprising a urea catalyst selected from the group consisting of 2-dimethylaminoethyl urea;
- N,N′-bis(2-dimethylaminoethyl) urea;
- N,N-bis(2-dimethylaminoethyl) urea;
- 3-dimethylaminopropyl urea;
- N,N′-bis(3-dimethylaminopropyl) urea;
- N,N-bis(3-dimethylaminopropyl) urea;
- 1-(N-methyl-3-pyrrolidino)methyl urea;
- 1,3-bis(N-methyl-3-pyrrolidino)methyl urea;
- 3-piperidinopropyl urea;
- N,N′-bis(3-piperidinopropyl) urea;
- 2-piperidinoethyl urea;
- N,N′-bis(2-piperidinoethyl) urea;
- and mixtures thereof and a blowing catalyst which is not a urea compound.
In a method for making a polyurethane flexible foam having a 1-3 lb/ft3 (16-48 kg/m3) density by reacting the following components in parts by weight (pbw):
- Polyol 20-100 Polymer Polyol 80-0 Silicone Surfactant 1-2.5 Water (Blowing Agent) 2-4.5 Crosslinker 0.5-2 Catalyst Composition 0.5-2 Isocyanate Index 70-115
- the improvement for increasing the load bearing properties of the foam which comprises using a catalyst composition comprising a urea catalyst selected from the group consisting of 2-dimethyl-aminoethyl urea;
- N,N′-bis(2-dimethylaminoethyl) urea;
- N,N-bis(2-dimethylaminoethyl) urea;
- 3-dimethylaminopropyl urea;
- N,N′-bis(3-dimethylaminopropyl) urea;
- N,N-bis(3-dimethyl-aminopropyl) urea;
- 1-(N-methyl-3-pyrrolidino)methyl urea;
- 1,3-bis(N-methyl-3-pyrrolidino)-methyl urea;
- 3-piperidinopropyl urea;
- N,N′-bis(3-piperidinopropyl) urea;
- 2-piperidinoethyl urea;
- N,N′-bis(2-piperidinoethyl) urea;
- and mixtures thereof and a gelling catalyst selected from the group consisting of triethylenediamine;
- quinuclidine;
- a substituted quinuclidine;
- a substituted pyrrolizidine and a substituted pyrrolidine.
Dependencies are inferred from the claim text.