Latent catalyst for the production of polyurethane foam

Patent metadata

Field	Value
Publication number	US-10464056-B2
Application number	US-201515502306-A
Country	US
Kind code	B2
Filing date	Jul 21, 2015
Priority date	Sep 12, 2014
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

The present technology provides a foam-forming composition comprising at least one polyol, at least one isocyanate, at least one copper catalyst composition, and at least one surfactant. The copper catalyst composition may comprise a copper (II) compound dissolved in a solvent. In one embodiment, the copper catalyst composition comprises (Cu(II)(acac)2) dissolved in DMSO.

First claim

What is claimed is:

1. A method for forming a foam comprising:
(i) combining:
a) at least one polyol;
b) at least one isocyanate;
c) a catalyst composition comprising a copper (II) compound dissolved in a solvent chosen from a dialkyl sulfoxide, an N,N-dialkylalkanoamides, a phosphonate, an aromatic compound, an ether compound, or an organic carbonate;
d) at least one surfactant to form a mixture; and

(ii) curing the mixture of (i).

2. The method of claim 1 , where the copper (II) compound comprises copper (II) coordinated to a ligand chosen from a carboxylate, a diketonate, a salicylate, an organic salt, a halide, or a combination of two or more thereof.

3. The method of claim 1 , where the catalyst composition comprises (Cu(II)(acac) 2 ).

4. The method of claim 3 , where the solvent comprises DMSO.

5. The method of claim 1 , where the catalyst composition comprises a co-diluent chosen from a fatty acid, a vegetable oil, or a combination thereof.

6. The method of claim 1 , wherein the catalyst composition comprises two or more Cu(II) salts.

7. The method of claim 1 , wherein the catalyst composition comprises Cu(II)(acac) 2 and Cu(II)acetate 2 .

8. The method of claim 1 , where the mixture comprises a copper concentration of about 0.04 to about 10 parts per 100 parts polyol (pphr).

9. The method of claim 1 , comprising a co-catalyst (c′).

10. The method of claim 9 , wherein the co-catalyst is chosen from a tertiary amine.

11. The method of claim 10 , wherein the tertiary amine is chosen from triethylenediamine, 2-methyltriethylenediamine, N,N,N′,N′-tetramethylethylenediamine, N,N,N′,N′-tetramethylpropylenediamine, N,N,N′,N″,N″-pentamethyldiethylenetriamine, N,N,N′,N″,N″-pentamethyl-(3-aminopropyl)ethylenediamine, N,N,N′,N″,N″-pentamethyldipropylenetriamine, N,N,N′,N′-tetramethylhexamethylenediamine, bis(2-dimethylaminoethyl)ether, dimethylethanolamine, dimethylisopropanolamine, dimethylaminoethoxyethanol, N,N-dimethyl-N′-(2-hydroxyethyl)ethylenediamine, N,N-dimethyl-N′-(2-hydroxyethyl)propanediamine, bis(dimethylaminopropyl)amine, bis(dimethyl aminopropyl)isopropanolamine, 3-quinuclidinol, N,N,N′,N′-tetramethylguanidine, 1,3,5-tris(N,N-dimethylaminopropyl)hexahydro-S-triazine, 1,8-diazabicyclo[5.4.0]undecene-7, N-methyl-N′-(2-dimethylaminoethyl)piperazine, N,N′-dimetylpiperazine, dimethylcyclohexylamine, N-methylmorpholine, N-ethylmorpholine, 1-methylimidazole, 1,2-dimethylimidazole, 1-isobutyl-2-methylimidazole, 1-dimethylaminopropylimidazole, N,N-dimethyhexanolamine, N-methyl-N′-(2-hydroxyethyl)piperazine, 1-(2-hydroxyethyl)imidazole, 1-(2-hydroxypropyl)imidazole, 1-(2-hydroxyethyl)-2-methylimidazole, 1-(2-hydroxypropyl)-2-methylimidazole, quinuclidine, 2-methylquinuclidine, or a combination of two or more thereof.

12. The method of claim 9 , wherein the catalyst composition and the co-catalyst are added separately in part (i).

13. The method of claim 9 , wherein the catalyst composition and the co-catalyst are part of a single composition.

14. The method of claim 9 , wherein the co-catalyst is present in an amount of from about 0.1 to about 10% by weight of the catalyst composition.

15. The method of claim 1 , further comprising combining a component (e) with components (a)-(d), where component (e) is chosen from a blowing agent, a chain extender, a crosslinker, a filler, a reinforcement, a pigment, a tint, a dye, a colorant, a flame retardant, an antioxidant, an antiozonant, a UV stabilizer, an anti-static agent, a biocide, a biostat, or a combination or two or more thereof.

16. The method of claim 1 , wherein step (i) comprises frothing components (a)-(d) to form a frothed mixture.

Assignees

• Momentive Performance Mat Inc

Inventors

• Stengel Jason

Classifications

• C08G18/3206

  aliphatic · CPC title

• C08G2101/00

  Manufacture of cellular products · CPC title

• B01J31/0237

  Amines · CPC title

• C08G18/4072

  Mixtures of compounds of group C08G18/63 with other macromolecular compounds · CPC title

• C08G18/222

  metal compounds not provided for in groups C08G18/225 - C08G18/26 · CPC title