This enhancement in the properties has been achieved due to the addition of amines viz mono, di, tertiary amines
(MEA, DEA, MDEA) respectively.
In this field, the unshared electron pair in the nitrogen of the tertiary amine
reacts with the epoxy resin.
Further investigations by our research group revealed that a better approach to obtain epoxy/thiol-ene systems was to anionically polymerize the epoxy resin with allyl-functionalized tertiary amines
as curing agents in conjunction with a multifunctional thiol and a radical photoinitiator [32, 33].
Accordingly, when the ratio of Au(III) to tertiary amine
is 10: 1, an SPR signal specific to gold nanoparticles has been detected only after 30 minutes since the moment the reacting species have been put into contact.
However, they are effectively cured only in the presence of catalysts such as tertiary amines
, Mannich bases, Lewis acids, boron fluoride complexes with aniline, monoethanolamine, and a-naphthylamine [2-4].
In chemically activated cements, the initiators are tertiary amines
that are activated by benzoyl peroxide, and the polymerization reaction occurs even in regions where the light from a light curing unit cannot reach the resin cement layer.
Photocuring of the monomer (BHAPP) with camphor-quinone (0.5 wt%) as photoinitiator in the presence of a tertiary amine
and also containing 20% NS was carried out using a light cure, model VCL OPTILUX 501.
In this photoinitator, the thioxanthone groups can harvest luminous energy, performing the same function as that of the antenna pigments in LHC, and the energy can be transmitted to tertiary amine
groups to activate photochemical reactions, like the RC in PSII.
Bulab 600, 685, and 693 tertiary amine
catalysts based on TMEDA (tetramethylethylene diamine).
On the contrary, basic catalysts such as tertiary amines
, accelerate the reaction leading to esters, and the generation of ether formations is suppressed (Fisch and Hofmann, 1954; Fischer, 1960).
Corrosion of Copper Electrical Contacts in an Automotive Environment"
Deblocking temperature ([degrees]C) Catalyst NX-2026_TDI NX-2026_IPDI None ~118 ~140 1,4-diazobicyclo NO evident ~116 [2.2.2] octane (DBO) effect Acid blocked ~82 ~117 tertiary amine
(DABCO 8154) Potassium-octoate ~92 ~82 in diethylene glycol (DABCO K15) Triethylenediamine NO evident ~70 in Dipropyl-eneglycol effect (Tegoamin 33) Zinc acetylacetonate ~95 ~110 (Tegokat 623) Tin Dibutyl dilaurate ~98 ~135 (DABCO T12) Zinc amine catalyst NO evident ~100 (K-KAT XK-614) effect N, N-Dimethylethanolamine ~85 NO evident (Tegoamin DMEA) effect tris-2,4,6-dimethylamlnomethyl NO evident ~92 phenol (Ancamine K54) effect Catalyst NX-2026_pHDI None ~120 1,4-diazobicyclo NO evident [2.2.2] octane (DBO) effect Acid blocked n.a.