Сообщение
Гесс » Ср июн 27, 2012 2:26 pm
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Production of light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate
By: Sun, Dongbing; Wang, Shuqing; Xia, Ming; Yao, Shuyu; Du, Chengxian; Qi, Yun
Assignee: Nantong Huikang International Enterprise Co., Ltd., Peop. Rep. China
The title light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate is prepd. by reacting di-Me sebacate with 2,2,6,6-tetramethyl-4-hydroxypiperidine in xylene under the catalysis of dibutyltin oxide at wt. ratio of 1: 1.3-2.6: 1.3-2.0: 0.01-0.1 at 110-130°C for 6 h, filtering, washing with water, removing org. layer, dewatering, decoloring, cooling, crystg., and filtering to obtain. This invention has short reaction period, high yield and purity of product, low energy cost, small environmental pollution, and is fit for com. process.
Patent Information
Patent No. Kind Date Application No. Date
CN 101665457 A Mar 10, 2010 CN 2009-10036230 Oct 10, 2009
Priority Application
CN 2009-10036230 Oct 10, 2009
Indexing
Heterocyclic Compounds (One Hetero Atom) (Section27-16)
Concepts
Light stabilizers
prodn. of light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate
Substances
818-08-6 Dibutyltin oxide
prodn. of light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate
Catalyst use; Uses
52829-07-9P Bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate
prodn. of light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate
Industrial manufacture; Synthetic preparation; Preparation
106-79-6 Dimethylsebacate
2403-88-5 2,2,6,6-Tetramethyl-4-hydroxypiperidine
prodn. of light stabilizer bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate
Reactant; Reactant or reagent
