• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Stabilizers for organic polymers are disclosed, of the type of sterically hindered phenols or amines, which are obtained by means of the reaction of a sterically hindered phenol or amine bearing in the molecule at least an alkoxysilanol group with a mono- or poly-hydroxy aliphatic alcohol, by a transesterification reaction. The stabilizers so obtained are compatible with the organic polymers, wherein they remain stably.
    公开号:SU1553014A3
    申请号:SU853979900
    申请日:1985-11-11
    公开日:1990-03-23
    发明作者:Греко Альберто；Паллини Лучано
    申请人:Эникем Синтези С.П.А. (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to silicon-organic chemistry, to a method for producing a new polypropylene light stabilizer, which can be used in the preparation of polypropylene films resistant to light aging.
    The purpose of the invention is to increase the efficiency of stabilization of polypropylene by obtaining a new light stabilizer.
    The drawing shows a graph of the carbonyl index from time to time.
    II p and me R 1. A 25 ml flask equipped with a magnetic stirrer, a nitrogen inlet and a Liebig condenser are charged with 20 moles of 2,2,6,6-tetramethyl-4- (3-methyldiethoxy-silyl-propyl-phenoxy) -piperndin 20 moles of 1,6-gxanediol. The flask is placed in a bath heated at 120 ° C, and then sodium methoxide (30% by weight solution in methanol) is injected in an amount of 0.5 May. % relative to the reagents. The process is carried out for 2 h in a weak stream of nitrogen. At the end, a vacuum of 50 Torr is applied over the next 20 minutes. Then, the pro cess is continued, while cooling to: room temperature, and then acetic acid (30 ml) is added. After one hour, the excess acetic acid was removed by vacuum (5 Torr, 100 ° C).
    In order to obtain products free of sodium acetate, the reaction mass is dissolved in isooctane and filtered through a filter paper. Iso-octane is removed from the filtrate in vacuo (50 Torr).
    In order to measure the amount of ethanol released, the flask is weighed.
    cl
    SL
    with

    C / J
    before and after the reaction. As a result of the reaction, 219 g of ethanol was isolated. The desired product is obtained in the form of a viscous liquid with a yield of 55% and the following characteristics shown in the table, where t1, t7 and tj correspond to the temperatures at which the reaction product decreased in weight by 1/8, 1/4 and 1/2 of its weight. .
    100,000
    6000
    Vapor Phase Osmometry.
    Volatility was determined thermogravimetrically at a heating rate of 10 ° C per minute, nitrogen flow 10 l / h.
    The product has the following elemental formula:
    CH5
    20
    CH3
    io-si-o-CH2-4-o-si-oH: CH2i6 ° LI1p
    (CH2) 5
    about
    where n, 1 7.
    The structure is confirmed by NMR analysis.
    Example2. In technical polypropylene F1 F20, the stabilizer of Example 1 is added in an amount such that the nitrogen content in the whole composition is 0.015% by weight. The composition thus obtained is molded at 180 ° C under a pressure of 100 kg / sq cm for 1.5. min, resulting in a film with a thickness of 150 microns. The formed film is rapidly cooled in current-water and subjected to accelerated aging by alternating cycles of irradiation with a fluorescent lamp, which generates UV rays at wavelengths of 280 and 350 nm with condensation in the dark. More specifically, the individual cycle includes 8-hour irradiation at 60 ° C and 4-hour condensation at. The degradation of polypropylene is checked on the basis of the formation of carbonyl compounds (CO indicator), which is evident from the IR spectrogram. More specifically, the CO index is
    315
    355
    395
    3.5
    20
    CH3
    as a function of the increase in absorbance at 1710.
    The test is repeated with a film of the same polypropylene, but containing technical stabilizer TINUVIN 770
    / °
    W- and
    HNfj-0-C /
    ABOUT
    BUT
    4-sn2-с-о - (, ин
    l
    in an amount where the nitrogen content is 0.015% by weight, and then the experiment is carried out using polypropylene containing no stabilizer.
    The results in the form of a graph are shown in the drawing, where the symbols have the following meanings:
    () indicates a tendency when the stabilizer of Example 1 is used, () indicates a tendency when a technical product TINUVIN 770 is used, (o) indicates a process occurring in non-stabilized polyethylene.
    KapS, 0.25 indicator
    0.2
    W200 300 WQ 500% H
    权利要求:
    Claims (1)
    [1]
    Claim
    A method of producing a light stabilizer of polypropylene based on sterically hindered amines by transesterification of a derivative of 2,2,6,6tetramethylpipericin, characterized in that, in order to increase the effectiveness of the stabilizer, a compound is used as a derivative of 2,2,6,6-tetramylpiperidine
    5 general formula
    Si X toc 2 H 5 ) 2 which is transesterified
    15 1,6-hexanediol at equimolar with respect to the reagents in the presence of alkali metal alcoholate at. 120 ° С and continuous removal of the ethanol released from the reaction zone with the subsequent isolation of the target product ιό.
    类似技术:
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    US4500446A|1985-02-19|Mixed unsaturated monocarboxylic acid esters of 2,2,6,6-tetramethyl-4-piperidinol and of its ammonium carboxylate as stabilizer against UV in polymeric materials
    KR930009816B1|1993-10-11|Piperidine derivatives and their use in polymers
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    同族专利:
    公开号 | 公开日
    IT1215227B|1990-01-31|
    EP0182415A2|1986-05-28|
    DE3579790D1|1990-10-25|
    IT8423539D0|1984-11-13|
    EP0182415A3|1988-01-07|
    JPS61155391A|1986-07-15|
    AT56720T|1990-10-15|
    EP0182415B1|1990-09-19|
    JPH082963B2|1996-01-17|
    KR860004071A|1986-06-16|
    KR870002020B1|1987-11-30|
    US4948888A|1990-08-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2641581A|1948-12-06|1953-06-09|Pierce John B Foundation|Method of transmitting heat|
    US3328450A|1963-01-09|1967-06-27|Dow Corning|Silylalkyl phenols|
    GB1493996A|1975-05-28|1977-12-07|Sankyo Co|4-siloxy derivatives of polyalkylated piperidines|
    CH598310A5|1975-05-28|1978-04-28|Ciba Geigy Ag|
    GB2030581B|1978-08-18|1983-01-19|Ciba Geigy Ag|Lubricant additives|
    SU1155602A1|1983-01-10|1985-05-15|Ярославский политехнический институт|Method of obtaining esters of orthosilicic acid|
    JPS61100587A|1984-10-22|1986-05-19|Chisso Corp|Organosilicon compound|IT1189096B|1986-05-02|1988-01-28|Enichem Sintesi|STABILIZING COMPOUNDS AND PROCEDURE FOR THEIR PREPARATION|
    IT1197491B|1986-10-08|1988-11-30|Enichem Sintesi|UV STABILIZERS SILITATES CONTAINING TERTIARY IMPEDED AMINES|
    JPH0750086B2|1989-09-13|1995-05-31|ダイソー株式会社|Chromatographic packing material and method for separating water-soluble organic compounds using the same|
    IT1248698B|1990-06-06|1995-01-26|Ciba Geigy Spa|PIEPRIDIN TRIAZIN COMPOUNDS CONTAINING SILOXANE GROUPS, SUITABLE FOR USE AS STABILIZERS FOR ORGANIC MATERIALS|
    IT1243409B|1990-12-17|1994-06-10|Ciba Geigy Spa|PIPERIDINE COMPOUNDS CONTAINING SILENIC GROUPS SUITABLE FOR USE AS STABILIZERS FOR ORGANIC MATERIALS|
    US5200443A|1991-03-29|1993-04-06|Kimberly-Clark Corporation|Radiation stabilized fabric having improved odor characteristics containing an hindered amine compound|
    IT1251572B|1991-09-11|1995-05-17|Enichem Sintesi|POLYSILOXANE STABILIZERS CONTAINING PHEROLIC GROUPS STERICALLY PREVENTED AND REACTIVE GROUPS|
    IT1270870B|1993-03-11|1997-05-13|Ciba Geigy Ag|POLYMETYLIPEPERIDINE COMPOUNDS CONTAINING SILANIC GROUPS SUITABLE FOR USE AS STABILIZERS FOR ORGANIC MATERIALS|
    US6120897A|1993-04-15|2000-09-19|Union Carbide Chemicals & Plastics Technology Corporation|Telephone cables|
    IT1269197B|1994-01-24|1997-03-21|Ciba Geigy Spa|1-HYDROCARBYLOXIDE PIPERIDIN COMPOUNDS CONTAINING SILANIC GROUPS SUITABLE FOR USE AS STABILIZERS FOR ORGANIC MATERIALS|
    IT1271131B|1994-11-30|1997-05-26|Ciba Geigy Spa|PIPERIDINE COMPOUNDS CONTAINING SILANIC GROUPS AS STABILIZERS FOR ORGANIC MATERIALS|
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    JP5526399B2|2009-01-16|2014-06-18|日本電気株式会社|Electrode active material, method for producing the same, and secondary battery|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT8423539A|IT1215227B|1984-11-13|1984-11-13|PROCEDURE FOR THE PREPARATION OF STABILIZERS FOR ORGANIC POLYMERS AND STABILIZERS SO OBTAINED.|
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