DABCO NE 300 is a highly efficient low emissive blow catalyst suitable for replacement of BDMAEE catalysts.
Product：Reactive Amine Catalyst (DABCO-NE300)
Description of DABCO NE 300：Non – emitting, lowest odor reactive amine catalyst, excellent operating width.Strong foaming, low odor.
Application of DABCO NE 300：Reactive foaming catalyst, low odor, strong foaming.
DABCO NE 300 is a non-emissive amine catalyst.
DABCO NE 300 promotes the urea (water isocyanate) reaction.
DABCO NE 300 reacts into the polyurethane matrix, thereby not contributing to emissions.
DABCO NE 300 offers no amine emissions, no VOC emissions, no vinyl staining and no windshield fogging.
DABCO NE 300 possesses master batch stability.
DABCO NE 300 is used in all molded and high density foam applications to meet OEM emission specifications such as VDA 278.
DABCO NE 300 is used in any water-blown TDI or TDI/MDI high resiliency (HR) foam, and in TDI/MDI or MDI-based, cold-cured molded polyurethane foam.
DABCO NE catalysts typically combine reactive groups with a high molecular weight and a high polarity.
Furthermore, it is important to reduce the amount of non-reactive, volatile by-products in the actual amine catalyst to a bare minimum.
In order to address these emission concerns the DABCO NE series of amine catalysts show the highest standard of purity.
In addition to emissions and environmental requirements amine catalysts need to perform according to established guidelines to meet high standards of physical property requirements so the mechanical performance of the finished product can be guaranteed.
The comfort industry has also devised a wide variety of tests to simulate the performance of foam over its life cycle.
Once such test relates to the chemical stability of foam and the testing methodology for evaluation employs severe conditions of heat and humidity.
These testing methodologies are used as tools to create guidelines for foam performance over time and also to simulate accelerated conditions of foam ageing.
Typically, catalysts that are retained in the Polyurethane polymer produce foam articles that exhibit lower chemical stability when exposed to accelerated ageing conditions.
Amine catalysts are highly important to the balance between the various reactions during the polyurethane foam formation.
The right amine choice helps to reduce foam defects and can highly influence the physical characteristics and quality of the final foam.
We offer traditional amines such as DABCO 33 LV, a well-known gel catalyst for flexible slabstock applications, or DABCO T, a reactive, medium active balance amine catalyst for rigid foam applications.
Under the DABCO NE brand, we offer a range of high performance amines optimized for special applications that require very low emission profiles (e.g. automotive).
Additionally, under the DABCO TMR brand, we offer a set of highly specialized trimerization and curing catalysts designed as co-catalysts, for conventional catalyst types that can help trigger trimerization, curing, smooth profile, and adhesion in specific formulations.
We have optimized many of these catalysts for lower odors and have balanced them to meet special customer needs, including delayed activity or strong-back end curing to improve structural stability.
DABCO (1,4-diazabicyclo[2.2.2]octane), also known as triethylenediamine or TEDA, is a bicyclic organic compound with the formula N2(C2H4)3.
DABCO is a highly nucleophilic tertiary amine base, which is used as a catalyst and reagent in polymerization and organic synthesis.
DABCO is similar in structure to quinuclidine, but the latter has one of the nitrogen atoms replaced by a carbon atom.
Reactions of DABCO:
The pKa of [HDABCO]+ (the protonated derivative) is 8.8, which is almost the same as ordinary alkylamines.
The nucleophilicity of the amine is high because the amine centers are unhindered.
DABCO is sufficiently basic to promote C–C coupling of terminal acetylenes, for example, phenylacetylene couples with electron-deficient iodoarenes.
Catalyst:
DABCO is used as a base-catalyst for:
-formation of polyurethane from alcohol and isocyanate functionalized monomers and pre-polymers.
-Baylis-Hillman reactions of aldehydes and unsaturated ketones and aldehydes.
Lewis base:
As an unhindered amine, DABCO is a strong ligand and Lewis base.
DABCO forms a crystalline 2:1 adduct with hydrogen peroxide[6] and sulfur dioxide.
Ionic monomer synthesis:
DABCO can be used to synthesize doubly-charged styrenic monomers.
These ionic monomers allow synthesis of polyelectrolytes and ionomers with two cyclic quaternary ammonium cations on each ionic pendant group.
Quencher of singlet oxygen:
DABCO and related amines are quenchers of singlet oxygen and effective antioxidants, and can be used to improve the lifetime of dyes.
This makes DABCO useful in dye lasers and in mounting samples for fluorescence microscopy (when used with glycerol and PBS).
DABCO can also be used to demethylate quaternary ammonium salts by heating in dimethylformamide (DMF).
Production:
DABCO is produced by thermal reactions of compounds of the type H2NCH2CH2X (X = OH, NH2, or NHR) in the presence of zeolitic catalysts.
An idealized conversion is shown for the conversion from ethanolamine:
3 H2NCH2CH2OH → N(CH2CH2)3N + NH3 + 3 H2O
DABCO NE 300 is used in all molded and high density foam applications to meet OEM emission specifications such as VDA 278.
KEYWORDS:
DABCO, DABCO NE, Reactive Amine Catalyst, DABCO-NE1082, DABCO-NE310, DABCO 33 LV, DABCO 1029, DABCO 2040, DABCO BL, DABCO BL 11
Uses of DABCO:
In chemical and biological defense, activated carbon is impregnated with DABCO for use in filters for masks, collective protection systems, and the like.
Other products:
Product：Reactive Amine Catalyst (DABCO-NE310)
Description：Non – emitting, high – efficiency reactive amine catalyst, excellent operating width.Strong foaming.
Application：Reactive foaming catalyst, low odor, strong foaming.
Product：Reactive Amine Catalyst (DABCO-NE1082)
Description：Non – emitting, highly reactive amines catalyzed gel reactions.
Application：Reaction type gel catalyst, high efficiency reaction type amine, catalyze gel reaction.