Tinuvin 144
Bis (1,2,2,6,6-pentamethyl-4-piperidinyl)-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]butylmalonate
63843-89-0
Ciba Specialty Chemicals
抗光剂/紫外吸收剂 >> 受阻胺(HASL)
Light stabilizer / UV-absorber >> Hindered amines (HALS)
涂层 >> 粉末涂层
Coatings >> Powder Coatings
汽车原始设备制造商OEM
Automotive OEM
汽车表面整修
Automotive refinishing
线圈涂层
Coil Coating
TINUVIN 144 is a light stabilizer of the hindered amine class (HALS)
and also contains an antioxidant moiety of the sterically hindered
phenol type. Its efficiency provides significantly extended life time to
coatings by minimizing paint defects such as cracking and loss of
gloss. TINUVIN 144 also shows triboelectric charging activity for
powder coatings.
%LV (1,2,2,6,6-pentamethyl-4-piperidinyl)-[[3,5-bis(1,1-dimethylethyl)-4-
hydroxyphenyl]methyl]butylmalonate
Molecular weight: 685 CAS No. 63843-89-0
TINUVIN 144 is recommended for applications such as:
· automotive coatings
· coil coatings
· powder coatings.
The performance of TINUVIN 144 can be significantly improved when
used in combination with a UV absorber such as recommended below.
These synergistic combinations give superior protection against gloss
reduction, cracking, blistering delamination and color change in
automotive coatings. TINUVIN 144 can also reduce yellowing caused
by overbake.
The light stabilizers may be added in two coat automotive finishes to
the base and clear coat. However, according to our experience the
optimum protection is achieved by adding the light stabilizer to the
topcoat.
Possible interactions of TINUVIN 144 with paint ingredients such as
acid catalysts should be carefully evaluated.
In powder coatings, TINUVIN 144 significantly improves triboelectric
charging, which in turn results in:
· improved transfer efficiency of the triboelectric coating process and
a reduced amount of overspray to be recycled
· improved powder adhesion to the workpiece
· enhanced wrap-around on spraying
· easier sieving of powders for both corona and triboelectric
application during manufacture and use.
The amount of TINUVIN 144 required for optimum performance should
be determined in trials covering a concentration range.
Light stabilizer of the hindered amine class (HALS) and also contains an antioxidant moiety of the sterically hindered phenol type. Provides significantly extended life time to coatings by minimizing paint defects such as cracking and loss of gloss. Shows triboelectric charging activity for powder coatings.
Recommended for automotive coatings, coil coatings, powder coatings. Can be significantly improved when used in combination with a UV absorber. These synergistic combinations give superior protection against gloss reduction, cracking, blistering delamination and color change in automotive coatings. Can also reduce yellowing caused by overbake. The light stabilizers may be added in two coat automotive finishes to the base and clear coat. However, according to our experience the optimum protection is achieved by adding the light stabilizer to the topcoat. Possible interactions with paint ingredients such as acid catalysts should be carefully evaluated. In powder coatings,results in improved transfer efficiency of the triboelectric coating process and a reduced amount of overspray to be recycled, improved powder adhesion to the workpiece, enhanced wrap-around on spraying, easier sieving of powders for both corona and triboelectric application during manufacture and use.
Recommended usage level: 0.5-1.0% based on weight percent binder solids (+ 1.0-3.0% UV absorber) for clear coats and one coat metallic shades, 1-2% (+ 1-2% UV absorber) for one coat solid shades.