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    • 3. 发明申请
    • PROCESS FOR RECOVERING WASTES OF A POLYMERIC COMPOSITION INCLUDING A PEROXIDIC CROSSLINKING AGENT
    • 用于回收包含过氧化物交联剂的聚合物的废物的方法
    • WO2014076520A1
    • 2014-05-22
    • PCT/IB2012/056410
    • 2012-11-14
    • PRYSMIAN S.P.A.
    • GALLETTI, FrancoSCRIMA, Vito
    • C08K5/14C08J11/06C08K5/00H01B3/44
    • C08J11/28C08J11/06C08J2315/00C08J2323/08C08J2323/16C08K5/005C08K5/14C08L2207/20H01B3/441H01B7/0045H01B7/17Y02W30/701
    • A process for recovering wastes of a polymeric composition including at least one peroxide-curable polymer and at least one peroxidic crosslinking agent, which comprises compounding the wastes with at least one antioxidant agent suitable for sulfur-vulcanized elastomeric compositions, at a temperature lower than the decomposition temperature of the at least one peroxide crosslinking agent. These above antioxidant agents are effective to quench the peroxide crosslinking agent, so as to avoid any substantial crosslinking of the composition during processing of the same. The compounding of the polymeric wastes with the antioxidant agent is carried out at a temperature lower than the decomposition temperature of the peroxide crosslinking agent, so as to avoid any premature activation of the crosslinking agent. This makes the process according to the present invention particularly suitable for compositions based on elastomeric polyolefins, more preferably for elastomeric ethylene copolymers such as ethylene-propylene copolymers (EPR) and ethylene-propylene-diene terpolymers (EPDM), which can be processed at relatively low temperatures, much lower than the decomposition temperatures of the most common peroxide crosslinking agents.
    • 一种用于回收包含至少一种可过氧化物固化的聚合物和至少一种过氧化交联剂的聚合物组合物的废物的方法,其包括将废物与至少一种适用于硫硫化弹性体组合物的抗氧化剂混合在低于 所述至少一种过氧化物交联剂的分解温度。 这些上述抗氧化剂有效地淬灭过氧化物交联剂,以避免组合物在其加工过程中发生任何实质性的交联。 聚合物废物与抗氧化剂的配混在低于过氧化物交联剂的分解温度的温度下进行,以避免交联剂过早活化。 这使得根据本发明的方法特别适合于基于弹性体聚烯烃的组合物,更优选用于弹性体乙烯共聚物如乙烯 - 丙烯共聚物(EPR)和乙烯 - 丙烯 - 二烯三元共聚物(EPDM),其可以相对加工 低温,远远低于最常用的过氧化物交联剂的分解温度。
    • 4. 发明申请
    • FIRE RESISTANT CABLE WITH CERAMIFIABLE LAYER
    • 耐腐蚀电缆与CERAMIFIABLE层
    • WO2017199060A1
    • 2017-11-23
    • PCT/IB2016/052864
    • 2016-05-17
    • PRYSMIAN S.P.A.
    • SCRIMA, VitoTOSI, FabioANDREOLETTI, MarcoCASTELLI, Carlo
    • H01B7/295
    • A fire resistant cable comprising: a conducting element (2; 21); a layer, surrounding the conducting element, made of a ceramifiable composition comprising: - a thermoplastic polymer mixture comprising: (a) a copolymer of ethylene with a C 4 -C 12 alpha-olefin, having a density of from 0.860 to 0.910 g/cm 3 , a melt flow index not higher than 3 g/10 min and a melting point of 105°C at most; (b) an ethylene homopolymer or copolymer of ethylene with a C 4 -C 12 alpha-olefin, having a density of from 0.900 to 0.985 g/cm 3 , a melt flow index not higher than 5 g/10 min and a melting point of at least 110°C; and (c) a polyethylene grafted with an ethylenically unsaturated monomer; - at least 25 wt% of silica; - a fluxing agent selected from alkaline metal oxides or precursors thereof; - an inorganic hydroxide compound selected from magnesium hydroxide, aluminium hydroxide and mixtures thereof; - a stabilizing agent comprising a hydrated magnesium silicate in an amount of at least 5 wt%; weight percentages being based on the total weight of the ceramifiable composition. Upon exposure to elevated temperatures such as those encountered in case of fire, the ceramifiable composition is transformed into a ceramic material capable of protecting the conducting element from fire and mechanical stresses. The fire resistant cable of the present invention can continue operating under fire conditions for a certain period of time.
    • 一种耐火电缆,其包括:导电元件(2; 21);和导电元件(2; 21)。 围绕导电元件的由陶瓷组合物制成的层,所述组合物包含: - 热塑性聚合物混合物,其包含:(a)乙烯与C 4 -C 12 - α-烯烃,其密度为0.860-0.910克/立方厘米,熔体流动指数不高于3克/ 10分钟,熔点最高为105℃; (b)乙烯均聚物或乙烯与C 4 -C 12α-烯烃的共聚物,其密度为0.900-0.985g / cm 3 熔体流动指数不高于5克/ 10分钟且熔点至少为110℃; 和(c)用烯键式不饱和单体接枝的聚乙烯; - 至少25重量%的二氧化硅; - 选自碱金属氧化物或其前体的助熔剂; - 选自氢氧化镁,氢氧化铝及其混合物的无机氢氧化物化合物; - 包含至少5重量%的水合硅酸镁的稳定剂; 重量百分比基于可陶瓷化组合物的总重量。 当暴露于升高的温度(例如遇火情况下)时,可陶瓷化组合物被转变成能够保护导电元件免受火灾和机械应力的陶瓷材料。 本发明的耐火电缆可以在火灾条件下持续运行一段时间。
    • 5. 发明申请
    • FIRE RESISTANT CABLE WITH CERAMIFIABLE LAYER
    • 具有可陶瓷层的耐火电缆
    • WO2016038427A1
    • 2016-03-17
    • PCT/IB2014/064474
    • 2014-09-12
    • PRYSMIAN S.P.A.
    • SCRIMA, VitoTOSI, Fabio
    • H01B13/14H01B7/295
    • H01B7/295C08K3/08C08K3/36C08K2003/0818C08L23/0853G02B6/443G02B6/4432G02B6/4436H01B13/148
    • A fire resistant cable comprising: at least one conducting element; at least one layer, surrounding said conducting element, made of a ceramifiable composition comprising: a polymeric material comprising an ethylene/vinyl acetate copolymer as main polymer; at least 25 wt% of silica; a fluxing agent selected from alkaline metal oxides or precursors thereof; a stabilizing agent comprising at least one of MgO, CaO, PbO, B203, or a precursor thereof; from 0.1 wt% to 5 wt% of a hydroxide selected from magnesium hydroxide, aluminium hydroxide and mixtures thereof; the above percentages being expressed with respect to the weight of the ceramifiable composition. Upon exposure to elevated temperatures such as those encountered in case of fire, the ceramifiable composition is transformed into a ceramic material capable of protecting the conducting element from fire and mechanical stresses. The fire resistant cable of the present invention can continue operating under fire conditions for a certain period of time.
    • 一种防火电缆,包括:至少一个导电元件; 围绕所述导电元件的至少一层,由可陶瓷组合物制成,包括:包含乙烯/乙酸乙烯酯共聚物作为主要聚合物的聚合材料; 至少25wt%的二氧化硅; 选自碱金属氧化物或其前体的助熔剂; 包含MgO,CaO,PbO,B 2 O 3或其前体中的至少一种的稳定剂; 0.1重量%至5重量%的选自氢氧化镁,氢氧化铝及其混合物的氢氧化物; 相对于可陶瓷组合物的重量表示上述百分数。 在暴露于诸如在火灾中遇到的高温的高温下,可陶瓷组合物被转化成能够保护导电元件免受火灾和机械应力的陶瓷材料。 本发明的耐火电缆可以在火灾条件下持续一定时间。
    • 7. 发明公开
    • FIRE RESISTANT CABLE WITH CERAMIFIABLE LAYER
    • 耐腐蚀电缆与CERAMIFIABLE层
    • EP3192082A1
    • 2017-07-19
    • EP14792873.3
    • 2014-09-12
    • Prysmian S.p.A.
    • SCRIMA, VitoTOSI, Fabio
    • H01B13/14H01B7/295
    • H01B7/295C08K3/08C08K3/36C08K2003/0818C08L23/0853G02B6/443G02B6/4432G02B6/4436H01B13/148
    • A fire resistant cable comprising: at least one conducting element; at least one layer, surrounding said conducting element, made of a ceramifiable composition comprising: a polymeric material comprising an ethylene/vinyl acetate copolymer as main polymer; at least 25 wt % of silica; a fluxing agent selected from alkaline metal oxides or precursors thereof; a stabilizing agent comprising at least one of MgO, CaO, PbO, B2O3, or a precursor thereof; from 0.1 wt % to 5 wt % of a hydroxide selected from magnesium hydroxide, aluminium hydroxide and mixtures thereof; the above percentages being expressed with respect to the weight of the ceramifiable composition. Upon exposure to elevated temperatures such as those encountered in case of fire, the ceramifiable composition is transformed into a ceramic material capable of protecting the conducting element from fire and mechanical stresses. The fire resistant cable of the present invention can continue operating under fire conditions for a certain period of time.
    • 一种耐火电缆,包括:至少一个导电元件; 围绕所述传导元件的至少一层由可陶瓷组合物制成,所述可陶瓷组合物包含:包含作为主要聚合物的乙烯/乙酸乙烯酯共聚物的聚合物材料; 至少25重量%的二氧化硅; 选自碱金属氧化物或其前体的助熔剂; 包含MgO,CaO,PbO,B 2 O 3或其前体中的至少一种的稳定剂; 0.1重量%至5重量%的选自氢氧化镁,氢氧化铝及其混合物的氢氧化物; 上述百分比相对于可陶瓷化组合物的重量来表示。 当暴露于升高的温度(例如遇火情况下)时,可陶瓷化组合物被转变成能够保护导电元件免受火灾和机械应力的陶瓷材料。 本发明的耐火电缆可以在火灾条件下持续运行一段时间。