The present invention relates to an amine of the formula (I) which is an adduct of 1,2-propylenediamine with an aryl monoglycidyl ether, to the use thereof as part of a hardener for epoxy resins, and to epoxy resin compositions obtained therewith. The amine of the formula (I) is preparable in a simple process in high purity, is of very low viscosity and is especially suitable for the curing of epoxy resins. It allows low-emission epoxy resin compositions which have good workability and which cure even under cold and damp conditions, quickly and without blushing effects, to form very hard products of high surface quality that display virtually no yellowing on exposure to light.
POLYAMINES HAVING SECONDARY ALIPHATIC AMINO GROUPS
申请人:Butikofer Pierre-Andre
公开号:US20130261270A1
公开(公告)日:2013-10-03
The present invention relates to novel polyamines having secondary amino groups, a process for producing them, adducts of these polyamines and their uses. The polyamines can be prepared in a simple way from readily available reactants. They and their adducts have, in particular, a low viscosity and are suitable as constituent of polyurethane and polyurea compositions having excellent processability and high flexibility, and also constituent of epoxy resin compositions, especially coatings.
The present invention concerns low-odor, low-viscosity hardeners for epoxy resins, including an amine with at least one amino group of formula (I) and an amine with at least one amino group of formula (II), wherein the amino groups of formulas (I) and (II) are present in a particular ratio.
These hardeners harden quickly with epoxy resins and without blushing to form films of high hardness and good resistance. They are especially suitable for low-emission coatings.
CURING AGENTS FOR LOW-EMISSION EXPOXY RESIN PRODUCTS
申请人:SIKA TECHNOLOGY AG
公开号:US20150337076A1
公开(公告)日:2015-11-26
The present invention relates to curing agents for epoxy resins, containing at least one adduct of a primary diamine and an aromatic monoepoxide, at least one primary diamine and at least one secondary diamine which is free of primary amino groups and free of hydroxyl groups. The curing agent is of low viscosity and cures, together with epoxy resins, rapidly and without blushing, even under damp, cold conditions, to form films of high hardness and low brittleness. It is particularly well suited for low-emission coatings that cure at room temperature.
Leimungsmittel für Papier in Form einer wässrigen Zubereitung von Salzen und/oder Quarternierungsprodukten von basischen Fettsäureamiden, die sich von Fettsäuren mit Schmelzpunkten von über 30° C ableiten.