Bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate
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| General | ||||||||||||||||
| Surname | Bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate | |||||||||||||||
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| Molecular formula | C 28 H 52 N 2 O 4 | |||||||||||||||
| Brief description |
white to yellowish, odorless, crystalline powder |
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| properties | ||||||||||||||||
| Molar mass | 480.72 g mol −1 | |||||||||||||||
| Physical state |
firmly |
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| density |
1.05 g cm −3 |
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| Melting point |
82-85 ° C |
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| solubility |
practically insoluble in water (<0.1 g l −1 at 20 ° C) |
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | ||||||||||||||||
Bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate is a chemical compound from the group of HALS ( English hindered amine light stabilizer ) known as UV-stabilizer is used, where they under the trade name Tinuvin 770 known is. Tinuvin 770 is added to PP , EPDM , PS , ABS , SAN , ASA and polyurethanes . In contrast to UV absorbers, the efficiency is independent of the layer thickness.
Mode of action
The light stabilizer bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate acts as a so-called radical scavenger , which interrupts radical chain reactions initiated by light , which lead to the degradation of the polymers.
Individual evidence
- ↑ a b c Entry on bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate in the GESTIS substance database of the IFA , accessed on November 14, 2013(JavaScript required) .
- ↑ a b c data sheet bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate from Sigma-Aldrich , accessed on May 25, 2017 ( PDF ).
- ↑ Data sheet Tinuvin 770 ( Memento of the original from March 24, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (PDF; 59 kB).
- ↑ Entry on sterically hindered amines. In: Römpp Online . Georg Thieme Verlag, accessed on April 7, 2016.
