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Catalysts selection can be based on application or the function a catalyst has to perform.
Applications 

Functions

   
Slapstock Polyether Blowing catalyst
Slapstock Polyester Gelation catalyst
Molded Foam Functional catalyst
Microcellular RIM Trimerization catalyst
Rigid Foam Delayed catalyst
Coatings  
One-Component Systems  

Composition Tradename Regulations

Organotin catalyst  
Amine Catalyst  
Non-tin catalyst  
Amine and metal trimerization catalyst  
Delayed Catalyst   

Flexible foam

Slabstock

Polyether Tetramethyl-2,2'-oxybis(ethylamine) Strong blowing catalyst;  Bis (dimethylaminoethyl) ether
DMEA, Dimethylaminoethanol Weak balanced catalyst; provides early cream time. Low cost
NMM, 4-methylmorpholine Polyether prepolymers and high rise foams for rigid insulation for transportation.
Polyester Morpholine, 4-coco alkyl derivs Improves diecuttability; 
DMDEE  2,2'-dimorpholinyldiethyl ether Does not promote cross-linking. Good blowing catalyst, stable prepolymers
DMP, dimethylpiperazine Good balance between gel and blow. Latent cure
NMM, 4-methylmorpholine High rise polyester foam 
NEM, 4-ethylmorpholine Surface cure for flexible polyether foams, good processing for polyester foams
2-dimethylaminoethyl morpholine Low-odor catalyst; Provides excellent processing latitude.

Molded flexible foam

Hot cured Bis (dimethylaminoethyl) ether Strong blowing catalyst for polyether foam
DMDEE  2,2'-dimorpholinyldiethyl ether Low crosslinking for polyester foam
Cold cured N-cetyl, N,N-dimethylamine Co-catalyst; improves surface cure in integral skin and microcellular applications.

Microcellular, elastomers, RIM

Triethylenediamine, 1,4-Diaza-bicyclo[2.2.2]octane. Strong gelation catalyst for multi-purpose use
1-[Bis[3-(dimethylamino)propyl]amino]propan-2-ol Catalyst with low odor and good gelation

Rigid foam packaging

Bis (dimethylaminoethyl) ether Polyether foams
NMM, 4-methylmorpholine High  rise polyester foams
DPA, Dimethylaminopropyliminobis(2-propanol) Low residual odor for packaging and automotive insulation.
DMCHA, N,N-Dimethylaminocyclohexane Broad spectrum catalyst for rigid foams
PMDETA, Pentamethyldiethylenetriamine Partially water  blown rigid foams and moldings
2-[2-(Dimethylamino)ethoxy]ethanol Reactive amine for foams molded against vinyl and packaging. Balance of blowing and gelation
DMEA, 2-Dimethylaminoethanol Low cost and acid scavenger

Coatings - Adhesives

Triethylenediamine, 1,4-Diaza-bicyclo[2.2.2]octane Strong gelation catalyst for multi-purpose use

One-component systems

DMDEE  2,2'-dimorpholinyldiethyl ether Does not promote crosslinking

Function of catalyst

Blowing catalyst  (water reaction and development of carbon dioxide)

t-Amine  N,N,N',N'-Tetramethyl-2,2'-oxybis(ethylamine)
Tetramethylhexamethylenediamine
Tetramethylethylenediamine
n-(2-dimethylaminoethyl)morpholine
1-[2-(Dimethylamino)ethyl]-4-methylpiperazine
N,N-Dimethylaminocyclohexane
1,1,4,7,7-Pentamethyldiethylenetriamine
3-[2-(Dimethylamino)ethoxy]-N,N-dimethylpropylamine
1,4-Dimethylpiperazine
1,2-Dimethylimidazole
NMM,  Methylmorpholine
4-Ethylmorpholine
2,2'-dimorpholinyldiethyl ether

Gelation catalyst (reaction of the isocyanate with the hydroxyl groups of the polyol)

Organotin Stannous octoate
Dibutyltin dilaurate (DBTDL)
Dibutyltin diacetate (DBTDA)
Dibutyltin bis(dodecyl mercaptide)
Non-tin Zirconium chelate
Amine Triethylenediamine
2-methyl-2-azabicyclo[2.2.1]heptane
N'-[3-(Dimethylamino)propyl]-N,N-dimethylpropane-1,3-diamine

Functional catalyst (catalyst contains hydroxyl groups and reacts with isocyanate, reduced odor and fogging)

Amine 2-[2-(Dimethylamino)ethoxy]ethanol
1-[Bis[3-(dimethylamino)propyl]amino]propan-2-ol
6-(Dimethylamino)hexanol
2-Dimethylaminoethanol
1,1'-[[3-(Dimethylamino)propyl]imino]bis(2-propanol)
2-((2-(2-(Dimethylamino)ethoxy)ethyl)methylamino)ethanol
N,N,N'-Trimethylaminoethyl ethanolamine

Trimerization catalyst (trimerize the isocyanate to a an isocyanurate trimer)

Potassium 2-ethylhexanoic acid salt
Potassium acetate
(2-hydroxypropyl)trimethylammonium 2-ethylhexanoate
N,N',N''-Tris(3-dimethylaminopropyl)hexahydro-s-triazine
Glycine, N-[(2-hydroxy-5-nonylphenyl)methyl]-N-methyl-, monosodium salt
(2-hydroxypropyl)trimethylammonium formate
Delayed catalyst
Formic acid, compd. with N,N,N',N'-tetramethyl-1,2-ethanediamine
1,8-Diazabicyclo[5.4.0]undec-7-ene 2-ethylhexanoic acid salt, DBU salt
1,8-Diazabicyclo[5.4.0]undec-7-ene phenol salt, DBU salt, 
2,4,6-Tris(dimethylaminomethyl)phenol

Last edited on:

  November 14, 2006

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