公开(公告)号：US20010020063A1

公开(公告)日：2001-09-06

申请号：US09789728

申请日：2001-02-22

申请人： Ausimont S.p.A.

发明人： Valery Kapeliouchko ,  Enrico Marchese

IPC分类号： C08K003/00 ,  C08L027/12

CPC分类号： C08F259/08 ,  C08F2/26 ,  C08F14/26 ,  C08F2/16

摘要： Process for the preparation of a dispersion based on homopolymers/copolymers of tetrafluoroethylene (TFE), said dispersion having a bimodal or multimodal distribution of the particle diameters, wherein the fraction of small particles is in the range 1.5-359 by weight calculated on the dry product; the ratio between the average diameter of the small particles with respect to the average diameter of the dispersion obtained from the polymerization being in the range 0.02-0.6; said process comprising the following essential steps: (a) preparation of an aqueous microemulsion comprising fluorinated surfactants and (per)fluoropolyether oils (PFPE); (b) feeding of the microemulsion into the polymerization reactor; (c) feeding of at least one fluorinated surfactant.

摘要翻译： 用于制备基于四氟乙烯（TFE）的均聚物/共聚物的分散体的方法，所述分散体具有粒径的双峰或多峰分布，其中小颗粒的分数在干燥条件下计算为1.5-359重量％ 产品; 小颗粒的平均直径相对于由聚合得到的分散体的平均直径的比在0.02-0.6的范围内; 所述方法包括以下必要步骤：（a）制备包含氟化表面活性剂和（全）氟聚醚油（PFPE）的水性微乳液; （b）将微乳液进料到聚合反应器中; （c）进料至少一种氟化表面活性剂。

公开(公告)号：US6166252A

公开(公告)日：2000-12-26

申请号：US226121

申请日：1999-01-07

申请人： Piero Gavezotti ,  Julio A. Abusleme ,  Vito Tortelli

发明人： Piero Gavezotti ,  Julio A. Abusleme ,  Vito Tortelli

IPC分类号： B01J23/26 ,  C07B61/00 ,  C07C51/58 ,  C07C51/60 ,  C07C51/62 ,  C07C51/64 ,  C07C55/40 ,  C07C53/21

CPC分类号： C07C51/60 ,  C07C51/62 ,  Y02P20/582 ,  C07C53/48

摘要： Process for preparing dichlorofluoroacetylfluoride (CFCl.sub.2 COF) comprising the following steps:a) fluorination with hydrofluoric acid (HF) of the trichloroacetyl halide in a fixed or fluidized tubular bed reactor, filled with fluorination catalysts and having a temperature profile between the inlet of the reactants and the outlet of the reaction products, in the range from 175.degree. C. to 275.degree. C.b) distillation of the reaction products with trichloroacetylfluoride recycle and recovery of a mixture formed by HF and CFCl.sub.2 COF;c) separation of the HF/CFCl.sub.2 COF mixture components by cooling at temperatures lower than -10.degree. C., and optionally the HF recycle.

摘要翻译： 制备二氯氟乙酰氟（CFCl2COF）的方法包括以下步骤：a）在固定或流化的管式床反应器中用三氟乙酰卤的氢氟酸（HF）氟化，填充氟化催化剂，并且在反应物入口和 反应产物的出口在175℃至275℃的范围内。b）用三氯乙酰氟循环蒸馏反应产物并回收由HF和CFCl 2 COF形成的混合物; c）通过在低于-10℃的温度下冷却并任选地HF再循环来分离HF / CFCl 2 COF混合物组分。

公开(公告)号：US6127498A

公开(公告)日：2000-10-03

申请号：US55325

申请日：1998-04-06

申请人： Claudio Tonelli ,  Giovanni Simeone ,  Tania Trombetta

发明人： Claudio Tonelli ,  Giovanni Simeone ,  Tania Trombetta

IPC分类号： C09K3/18 ,  C08F8/18 ,  C08F290/06 ,  C08G65/00 ,  C08G65/32 ,  C08L71/00 ,  C08F16/24

CPC分类号： C08G65/007 ,  C08F8/18

摘要： Hydrogenated fluoromodified polymers obtainable by reaction among hydrogenated polymers and the modifier having a polyether structure:RfO(CF.sub.2 CF.sub.2 O).sub.m (CF.sub.2 O).sub.n --CF.sub.2 --A.sub.q --T.sub.p (I)wherein A is a linking bridge bound to the end group --CF.sub.2 -- of the perfluoropolyether chain, T represents one or more reactive functional groups; p and q are integers, p ranges from 1 to 4, q is an integer from 0 to 1; m and n are integers such that m/n is comprised between 0.2 and 5, Rf is a perfluoroalkyl from 1 to 3 carbon atoms.

摘要翻译： 通过氢化聚合物与具有聚醚结构的改性剂反应获得的氢化氟改性聚合物：RfO（CF 2 CF 2 O）m（CF 2 O）n -CF 2 -Aq-Tp（I）其中A是与末端基团结合的连接桥-CF2- 全氟聚醚链，T表示一个或多个反应性官能团; p和q为整数，p为1至4，q为0至1的整数; m和n是整数，使得m / n包含在0.2和5之间，Rf是1至3个碳原子的全氟烷基。

公开(公告)号：US6111028A

公开(公告)日：2000-08-29

申请号：US955751

申请日：1997-10-22

申请人： Giulio Brinati ,  Vincenzo Arcella ,  Marco Apostolo ,  Anna Staccione

发明人： Giulio Brinati ,  Vincenzo Arcella ,  Marco Apostolo ,  Anna Staccione

IPC分类号： B29D99/00 ,  B29K21/00 ,  C08F2/22 ,  C08F2/40 ,  C08F8/00 ,  C08F214/18 ,  C08F214/22 ,  C08F214/28 ,  C08L27/12 ,  C08L27/16

CPC分类号： C08F214/28 ,  C08F8/00 ,  C08F214/22 ,  C08F2800/10 ,  C08F2810/20

摘要： O-rings obtainable from vinylidenfluoride (VDF)-based ionically cured copolymers having compression set lower than 20%.

摘要翻译： 可从具有压缩永久变形金属（VDF）的离子固化共聚物获得的O形环的压缩永久变形率低于20％。

公开(公告)号：US6072020A

公开(公告)日：2000-06-06

申请号：US340136

申请日：1999-06-28

申请人： Vincenzo Arcella ,  Giulio Brinati ,  Patrizia Maccone

发明人： Vincenzo Arcella ,  Giulio Brinati ,  Patrizia Maccone

IPC分类号： C08J3/00 ,  B01D61/14 ,  C08F6/06 ,  C08F6/16 ,  C08F14/18 ,  C08G63/00

CPC分类号： B01D61/142 ,  C08F6/06

摘要： Purification process of amorphous polymers comprising the following steps:a) the amorphous polymer is dissolved in a fluorinated solvent;b) the solution containing the polymer is microfiltered by semipermeable membranes having a porosity in the range 0.05-0.5 .mu.m, and the permeate forms the polymeric solution purified by contaminants in suspension;c) the permeate coming from b) is ultrafiltered/nanofiltered by membranes with porosity in the range 10-500 kDa, and the retentate is formed by the polymeric solution purified from the contaminants in solution.

摘要翻译： 无定形聚合物的纯化方法包括以下步骤：a）将无定形聚合物溶解在氟化溶剂中; b）含有聚合物的溶液通过孔隙率在0.05-0.5μm范围内的半透膜进行微过滤，并且渗透物形成由悬浮液中的污染物纯化的聚合物溶液; c）来自b）的渗透物通过孔隙率在10-500kDa范围内的膜进行超滤/纳滤，并且通过从溶液中的污染物纯化的聚合溶液形成滞留物。

公开(公告)号：US6071564A

公开(公告)日：2000-06-06

申请号：US872454

申请日：1997-06-10

申请人： Roberta Marchetti ,  Massimo Malavasi

发明人： Roberta Marchetti ,  Massimo Malavasi

IPC分类号： B65B33/04 ,  C08G18/08 ,  C08G18/10 ,  C08G18/50 ,  C08G18/79 ,  C08G65/00 ,  C09D171/02 ,  C09D175/04 ,  B05D3/02 ,  C08G18/28

CPC分类号： C08G18/10 ,  C08G18/089 ,  C08G18/5015 ,  C08G18/792 ,  C08G65/007 ,  C09D171/02 ,  C09D175/04 ,  C08G2650/48

摘要： Use for protective coatings of compositions comprising (% by wt.): A) from 10 to 60% of a A1) (per)fluoropolyethereal prepolymer having a polyisocyanic functionality obtainable by reacting a bifunctional having hydroxylic functionality, said fluoropolyethers having --CH.sub.2 OH terminations directly linked to a perfluoroalkylic group CF.sub.2 or CF.sub.2 CFX (X.dbd.Cl, F) or CF(CF.sub.3), with a polyisocyanate containing isocyanurate rings, preferably obtained by cyclotrimerization of HDI, IPDI or other monomeric diisocyanates, by utilizing an excess of isocyanate groups comprised between 10 and 80% by moles; the above fluoropolyether prepolymer can be partially or totally replaced by A2) non fluorinated polyisocyanates containing isocyanurate rings and/or hydrogenated polyisocyanate prepolymers;B) from 0.1 to 50% of a (per)fluoropolyether having bifunctional hydroxylic functionality of the type --CF.sub.2 CH.sub.2 OH, --CF.sub.2 CFXCH.sub.2 OH (X.dbd.Cl, F) or --CF(CF.sub.3)CH.sub.2 OH; or polyfunctional hydroxylic functionality termination but containing at least 5% by weight, preferably 10%, of the same type of termination indicated above for the bifunctional; or (per)fluoropolyethers prepolymers as defined in A) but having a lower prepolymerization degree so to leave free oxydrilyic functions of the type --CF.sub.2 CH.sub.2 OH, --CF.sub.2 CFXCH.sub.2 OH (X.dbd.Cl, F), or --CF(CF.sub.3)CH.sub.2 OH;or the latter prepolymers having free hydroxilic functions can be used alone as a single component, being component A) 0%;C) 10-90%, with respect to the resin of a diluting solvent.

摘要翻译： 用于包含（重量％）的组合物的保护涂层：A）10至60％的具有通过使具有羟基官能团的双官能团反应获得的多异氰酸官能团的A1）（全）氟聚醚聚醚预聚物，所述含氟聚醚具有-CH 2 OH终端直接 与含全氟烷基的CF 2或CF 2 CFX（X = Cl，F）或CF（CF 3）连​​接，与含有异氰脲酸酯环的多异氰酸酯反应，优选通过HDI，IPDI或其它单体二异氰酸酯的环化三聚，通过使用过量的异氰酸酯基团 10和80摩尔％ 上述含氟聚醚预聚物可部分或全部被A2）含有异氰脲酸酯环和/或氢化多异氰酸酯预聚物的非氟化多异氰酸酯代替; B）0.1至50％具有-CF 2 CH 2 OH，-CF 2 CFXCH 2 OH（X = Cl，F）或-CF（CF 3）CH 2 OH的双功能羟基官能团的（全）氟聚醚; 或多官能羟基官能团终止，但含有至少5重量％，优选10重量％的与双官能团相同类型的终止物; 或（A）含氟聚醚预聚物，但是具有较低的预聚合度，以便留下-CF 2 CH 2 OH，-CF 2 CFXCH 2 OH（X = Cl，F）或-CF（CF 3）CH 2 OH的游离氧饱和官能团; 或具有游离羟基功能的后一种预聚物可单独用作单一组分，即组分A）0％; C）10-90％，相对于稀释溶剂的树脂。

公开(公告)号：US6066707A

公开(公告)日：2000-05-23

申请号：US862331

申请日：1997-05-23

申请人： Pasqua Colaianna ,  Julio A. Abusleme

发明人： Pasqua Colaianna ,  Julio A. Abusleme

IPC分类号： C08F214/18 ,  C08F14/18 ,  C08F14/28 ,  C08F24/00 ,  C08F214/26 ,  C08F214/28 ,  C08F224/00 ,  C08E234/02

CPC分类号： C08F214/262

摘要： Tetrafluoroethylene (TFE) thermoprocessable copolymers, consisting of:(A) from 0.1 to 15% by moles of a fluorodioxol of formula ##STR1## wherein R.sub.F is a perfluoroalkyl having from 1 to 5 carbon atoms; X.sub.1 and X.sub.2, equal to or different from each other, are --F or --CF.sub.3 ; Z is selected from --F, --H and --Cl;(B) from 0 to 15% by moles of a perfluorinated monomer selected from hexafluoropropene (HFP) and a perfluoralkylvinylether of formula CF.sub.2 .dbd.CF--OR'.sub.f wherein R'.sub.f is a perfluoroalkyl C.sub.2 -C.sub.4 or their mixtures; excluding the value 0 for the amount of the monomer (B); and(C) TFE forming the remaining part to 100%; with the proviso that the total amount of the monomers (A) and (B) is lower than or equal to 20% by mole.

摘要翻译： 四氟乙烯（TFE）热可加工共聚物，由以下组成：（A）0.1至15摩尔％的下式的氟代二醇其中RF是具有1至5个碳原子的全氟烷基; X 1和X 2彼此相同或不同，为-F或-CF 3; Z选自-F，-H和-Cl; （B）0至15摩尔％的选自六氟丙烯（HFP）和式CF2 = CF-OR'f的全氟烷基乙烯基醚的全氟化单体，其中R'f是全氟烷基C2-C4或它们的混合物; 不包括单体（B）量的值0; 和（C）TFE形成剩余部分至100％; 条件是单体（A）和（B）的总量低于或等于20摩尔％。

公开(公告)号：US6040414A

公开(公告)日：2000-03-21

申请号：US872502

申请日：1997-06-10

申请人： Tatiana Temtchenko ,  Massimo Malavasi

发明人： Tatiana Temtchenko ,  Massimo Malavasi

IPC分类号： B65B33/02 ,  C08G18/50 ,  C08G65/00 ,  C09D171/02 ,  C09D175/08

CPC分类号： C09D171/02 ,  C08G18/5015 ,  C08G65/007 ,  Y10T428/31605

摘要： Use of crosslinked polymers for coil coating based on perfluoropolyethereal polymers, comprising as repeating units sequences of one or more oxyfluoroalkylenic units such as --CF.sub.2 CF.sub.2 O--, --CR.sub.4 R.sub.5 CF.sub.2 CF.sub.2 O-- wherein R.sub.4 and R.sub.5 equal to or different from each other are chosen among H, Cl, F or perfluoroalkyl from 1 to 4 carbon atoms, --CF.sub.2 CF(CF.sub.3)O--, --CFYO--, wherein Y is equal to F or CF.sub.3, having hydroxylic bifunctional termination, crosslinking being carried out with blocked polyisocyanates having at least 3 NCO groups.

摘要翻译： 基于全氟聚醚聚合物的交联聚合物用于卷材涂层的应用，其包含作为重复单元的序列，其中一个或多个氟代烷基单元如-CF 2 CF 2 O-，-CR 4 R 5 CF 2 CF 2 O-，其中R 4和R 5彼此相同或不同，选自H，Cl， F或1至4个碳原子的全氟烷基，-CF 2 CF（CF 3）O-，-CFYO-，其中Y等于F或CF 3，具有羟基双功能终止，用具有至少3个NCO基团的封端多异氰酸酯进行交联。

公开(公告)号：US6037508A

公开(公告)日：2000-03-14

申请号：US209942

申请日：1998-12-11

申请人： Paolo Cuzzato ,  Antonio Masiero

发明人： Paolo Cuzzato ,  Antonio Masiero

IPC分类号： B01J27/12 ,  B01J23/26 ,  B01J27/125 ,  C07B61/00 ,  C07C17/04 ,  C07C17/10 ,  C07C17/20 ,  C07C17/21 ,  C07C19/08 ,  C07C17/00

CPC分类号： C07C17/206 ,  B01J23/26 ,  B01J27/125 ,  C07C17/21

摘要： 1,1,1,2-tetrafluoroethane (134a) is prepared by reacting, in the gas phase, trichloroethylene with 1,1,1-trifluorochloroethane (133a) and hydrofluoric acid with trichloroethylene/133a molar ratios ranging from 5/95 to 50/50, in the presence of a catalyst consisting of Cr.sub.2 O.sub.3 carried on AlF.sub.3.The process provides 134a yields higher than 90% and permits an exceptionally long life of the catalyst. In this way it is possible to realize a continuous process by recycling the unreacted trichloroethylene and 133a, thereby making up for the relatively low global conversion of the reagents.

摘要翻译： 1,1,1,2-四氟乙烷（134a）是通过在气相中使三氯乙烯与1,1,1-三氟氯乙烷（133a）和三氟乙烯/ 133a摩尔比为5/95至50的氢氟酸反应制备的 / 50，在由AlF3承载的Cr2O3组成的催化剂存在下。 该方法提供134a产率高于90％并且允许催化剂的使用寿命特别长。 以这种方式，可以通过再循环未反应的三氯乙烯和133a来实现连续的方法，从而弥补了试剂的相对低的全局转化率。

公开(公告)号：US6013747A

公开(公告)日：2000-01-11

申请号：US888690

申请日：1997-07-07

申请人： Julio A. Abusleme ,  Paolo Lazzari

发明人： Julio A. Abusleme ,  Paolo Lazzari

IPC分类号： C08G65/28 ,  C08F2/00 ,  C08F2/20 ,  C08F14/18 ,  C08G65/00

CPC分类号： C08G65/007 ,  C08F14/18

摘要： Use of surfactants in the suspension polymerization of fluorinated monomers for preparing fluoropolymers containing hydrogen, said surfacants having the general formula:R.sub.f --[L--(OCHR.sub.1 --CHR.sub.2).sub.m --OZ)].sub.iwherein:i is equal to 1 or 2;m is an integer comprised between 4 and 60;L can be chosen between: --(CFY--CO--O).sub.p R'-- and --(CFY--CO--NH).sub.p R'--wherein p is an integer equal to 0 or to 1;Y=F, CF.sub.3 ; R'=alkylic radical C.sub.1 -C.sub.5, linear or branched when possible;R.sub.1, R.sub.2 can be both H or the former H and the latter CH.sub.3 ;Z can be H, alkyl radical C.sub.1 -C.sub.3, linear or branched when possible; or (CH.sub.2).sub.n OH with n an integer from 1 to 6;R.sub.f is a perfluoroalkylic radical or a perfluoropolyether radical, having a number average molecular weight comprised between 250 and 1500.

摘要翻译： 在氟化单体的悬浮聚合中使用表面活性剂来制备含氢的含氟聚合物，所述表面活性剂具有以下通式：Rf- [L-（OCHR1-CHR2）m-OZ）]其中i等于1或2; m是4和60之间的整数; L可以选自： - （CFY-CO-O）pR'-和 - （CFY-CO-NH）pR'，其中p是等于0或1的整数; Y = F，CF3; R'=烷基C1-C5，尽可能直链或支链; R1，R2可以是H或前者H，后者可以是CH3; Z可以是H，烷基C1-C3，尽可能直链或支链; 或（C 1）n OH，n为1至6的整数; Rf是全氟烷基或全氟聚醚基，其数均分子量在250和1500之间。