公开(公告)号：US5093400A

公开(公告)日：1992-03-03

申请号：US453174

申请日：1989-12-26

申请人： Vincenzo Arcella ,  Giulio Brinati ,  Franco Barbieri

发明人： Vincenzo Arcella ,  Giulio Brinati ,  Franco Barbieri

IPC分类号： B29C33/60 ,  B29K21/00 ,  C08L21/00 ,  C08L27/12 ,  C08L71/02

CPC分类号： C08L21/00 ,  C08L27/12 ,  C08L71/02

摘要： Use of perfluoropolyethers having perfluoroalkyl end groups with a molecular weight ranging from 500 to 1500, in amounts from 0.5 to 3 parts by weight per 100 parts by weight of elastomer and, optimally, in combination wit polytetrafluoroethylene having a molecular weight lower than about 200,000, as additives to the polymerization latex of rubbers vulcanizable by means of peroxides in order to improve the detachability of the vulcanizate from forming molds.

公开(公告)号：US5063092A

公开(公告)日：1991-11-05

申请号：US512907

申请日：1990-04-25

申请人： Daria Lenti ,  Mario Visca

发明人： Daria Lenti ,  Mario Visca

IPC分类号： B27K3/15 ,  C04B41/48 ,  C08G65/00 ,  C08J3/03 ,  C09K3/18

CPC分类号： C08J3/03 ,  C04B41/4846 ,  C08G65/007 ,  C08L97/02 ,  B27K3/15 ,  C08J2371/00 ,  C08L71/00 ,  Y10T428/31544 ,  Y10T428/4935 ,  Y10T428/662

摘要： Protecting marble, stone, tiles, cement, and similar materials utilized in the building industry from the action of atmospheric agents and pollutants, which comprises applying a perfluoropolyether having perfluoroalkyl end groups onto the surface of the article, said perfluoropolyether being in the form of an aqueous microemulsion.

公开(公告)号：US5037914A

公开(公告)日：1991-08-06

申请号：US437678

申请日：1989-11-17

申请人： Claudio Monti

发明人： Claudio Monti

IPC分类号： C08F2/16 ,  C08F2/22 ,  C08F2/26 ,  C08F10/00 ,  C08F14/26 ,  C08F210/02 ,  C08F214/26

CPC分类号： C08F214/265 ,  C08F14/26 ,  C08F210/02 ,  C08F2438/01

摘要： The present invention relates to a process for preparing copolymers of tetrafluoroethylene with ethylene, and optionally with a third monomer, of vinylic character.The process is characterized in that tetrafluoroethylene is caused to react with ethylene and with the optional third, vinylic, monomer in an aqueous emulsion with the aid of a polymerization initiator of peroxy type, at a temperature within the range between 30.degree. and 95.degree. C. and under a pressure within the range of from 1.5 to 4.0 MPa, in the presence of tert.-butyl alcohol and of 1,1,2,2-tetrachloro-1,2-difluoroethane.

公开(公告)号：US5017709A

公开(公告)日：1991-05-21

申请号：US396076

申请日：1989-08-21

申请人： Walter Navarrini ,  Darryl D. Desmarteu

发明人： Walter Navarrini ,  Darryl D. Desmarteu

IPC分类号： C07D273/00 ,  C07D273/01

CPC分类号： C07D273/00

摘要： Perfluoro-oxaziridines, characterized by the presence of an aminic group in position 3 of the oxaziridine ring, of the formula: ##STR1## wherein each R is independently either F or a perfluoro-alkyl group, and a process for their preparation, consisting in reacting the corresponding perfluoroimine with H.sub.2 O.sub.2, in the presence of a base in a dipolar aprotic solvent.

摘要翻译： 全氟 - 氧氮杂环丁烷，其特征在于在氮杂氮环的3位存在氨基，其具有下式：其中每个R独立地为F或全氟烷基，及其制备方法，包括 在碱存在下，在偶极非质子溶剂中使相应的全氟亚胺与H 2 O 2反应。

公开(公告)号：US5011979A

公开(公告)日：1991-04-30

申请号：US513219

申请日：1990-04-23

申请人： Guglielmo Gregorio ,  Lamberto Roberti ,  Ezio Strepparola

发明人： Guglielmo Gregorio ,  Lamberto Roberti ,  Ezio Strepparola

IPC分类号： C07C67/08 ,  C07C69/653

CPC分类号： C07C67/08 ,  C07C69/653

摘要： The invention relates to a process for preparing methacrylates of fluorinated alcohols, which consists in reacting said alcohols with an excess of methacrylic acid in the presence of phosphoric anhydride, which acts as a catalyst and absorbs the water which has formed. The process is applicable to primary, secondary and tertiary fluorinated alcohols and to alcohols and diols with perfluoroethereal chains.

公开(公告)号：US5000864A

公开(公告)日：1991-03-19

申请号：US476754

申请日：1990-02-08

申请人： Ezio Strepparola ,  Costante Corti ,  Piero Gavezotti ,  Alba Chittofrati

发明人： Ezio Strepparola ,  Costante Corti ,  Piero Gavezotti ,  Alba Chittofrati

IPC分类号： C10M131/10 ,  C07C41/01 ,  C07C43/12 ,  C08G65/00 ,  C08G65/22 ,  C08G65/333 ,  C10M105/54 ,  C10M107/38 ,  C10M131/12 ,  C10M147/04 ,  C10N30/12

CPC分类号： C08G65/33396 ,  C08G65/007 ,  C10M107/38 ,  C10M147/04 ,  C10M2213/00 ,  C10M2213/04 ,  C10M2213/06 ,  C10M2217/00 ,  C10M2217/02 ,  C10M2217/04 ,  C10N2230/12

摘要： Perfluoropolyethers having antirust properties, suitable for being used as lubricating oils or as components of lubricating greases or as antirust additives for lubricating oils and greases based on perfluoropolyethers.

公开(公告)号：US4996370A

公开(公告)日：1991-02-26

申请号：US503742

申请日：1990-04-03

申请人： Antonio Marraccini ,  Antonio Pasquale ,  Tiziana Fiorani

发明人： Antonio Marraccini ,  Antonio Pasquale ,  Tiziana Fiorani

IPC分类号： C07C17/23 ,  C07C41/24 ,  C07C43/17

CPC分类号： C07C43/17 ,  C07C17/23 ,  C07C41/24

摘要： Preparing fluorinated conjugated olefinic products having, among others, the formulae:R.sub.x O--(CF.dbd.CF).sub.m --F (A)R.sub.x O--(CF.dbd.CF).sub.m --OR.sub.x (B)F--(CF.dbd.CF).sub.m --F (C)andR.sub.y --(CF.dbd.CF).sub.m --F (D)wherein:R.sub.x and R.sub.y represent, among others, a perhalogenated alkyl radical containing from 1 to 10 carbon atoms in the case of R.sub.x and from 1 to 9 carbon atoms in the case of R.sub.y, andm is a numeral in the range of from 2 to 10.These olefinic products are obtained by reacting telomeric products having, among others, the formulae:R.sub.x O--(CFCl--CFCl).sub.m --FR.sub.x O--(CFCl--CFCkl).sub.m --OR.sub.xF--(CFCl--CFCl).sub.m --F, andR.sub.y --(CFCl--CFCl).sub.m --Fwith zinc powder, at temperatures within the range of from 40.degree. C. up to 160.degree. C., in an organic solvent selected from among alcohols, dimethylformide and dimethylsulfoxide. Many of these products, among which those corresponding to formulae (A), (B) and (D), are new.

摘要翻译： 制备具有以下通式的氟化共轭烯烃产物：RxO-（CF = CF）mF（A）RxO-（CF = CF）m -ORx（B）F-（CF = CF）mF（C） - （CF = CF）mF（D）其中：Rx和Ry尤其表示在Rx的情况下含有1至10个碳原子的全卤代烷基，在Ry的情况下为1至9个碳原子， m是2至10范围内的数字。这些烯属产物是通过使具有以下化学式的端粒产物：RxO-（CFCl-CFCl）mF RxO-（CFCl-CFCkl）m-ORx F- （CFCl-CFCl）mF和具有锌粉末的Ry-（CFCl-CFCl）mF，在40℃至160℃的温度范围内，在选自醇，二甲基甲酰胺和二甲基亚砜 。 这些产品中的许多，其中对应于式（A），（B）和（D）的那些产品是新的。

公开(公告)号：US4962282A

公开(公告)日：1990-10-09

申请号：US479518

申请日：1990-02-13

申请人： Antonio Marraccini ,  Gabriele Perego

发明人： Antonio Marraccini ,  Gabriele Perego

IPC分类号： B01J27/12 ,  C07B61/00 ,  C07C303/02 ,  C07C309/80 ,  C07C309/82

CPC分类号： C07C303/02

摘要： Preparation of fluorooxy-fluorosulfonyl-fluorocompounds by means of the direct fluorination with elemental fluorine of various .beta.-sultones according to the following reaction scheme: ##STR1## wherein R.sub.1 and R.sub.2, which can be either equal to, or different from, each other, represent a fluorine or chlorine atom, or an alkyl radical partially or totally halogenated with fluorine and/or chlorine.The reaction takes place in continuous in the presence of a fluorination catalyst, preferably constituted by an alkali-metal fluoride preferably supported on a metal material, at temperatures comprised within the range of from -30.degree. C. to +100.degree. C., and under the pressure comprised within the range of from 50 to 800 kPa; said catalyst is a fixed-bed catalyst, or is suspended in a reaction medium inert under the operating conditions.

公开(公告)号：US4959426A

公开(公告)日：1990-09-25

申请号：US267733

申请日：1988-11-03

申请人： Alberto Re ,  Marco De Giorgi

发明人： Alberto Re ,  Marco De Giorgi

IPC分类号： C08G59/20 ,  C08G59/00 ,  C08G59/04 ,  C08G59/22 ,  C08G59/30 ,  C08G59/38 ,  C08L63/00

CPC分类号： C08G59/226 ,  C08G59/04 ,  C08G59/30 ,  C08G59/38

摘要： A non-fluorinated epoxy prepolymer of known type is mixed with a fluorinated epoxy prepolymer containing perfluoropolyether blocks or perfluoroalkylene blocks of type --(CF.sub.2 CF.sub.2).sub.n -- and/or of type ##STR1## and the two prepolymers are co-cured by treating the mixture with cross-linking agents of known type suitable for epoxy resins, thereby obtaining a cross-linked epoxy resin having a fluorine content.ltoreq.30% by weight, preferably.ltoreq.25% by weight.

公开(公告)号：US4959171A

公开(公告)日：1990-09-25

申请号：US396635

申请日：1989-08-22

申请人： Giovanni Pantini ,  Susanna Savonelli

发明人： Giovanni Pantini ,  Susanna Savonelli

IPC分类号： C11D1/66 ,  A61K8/70 ,  A61Q19/10 ,  C11D3/24 ,  C11D3/37 ,  C11D17/00

CPC分类号： A61K8/70 ,  A61Q19/10 ,  C11D17/006 ,  C11D3/24 ,  C11D3/3707

摘要： Syndet soap cakes (soap bars) containing, besides the usual components, from 0.001 to 10% by weight of perfluoropolyethers having perfluoroalkyl end groups. Among the suitable perfluoropolyethers are those which contain one or more repeating perfluorooxyalkylene units selected from the group consisting of (CF.sub.2 --CF.sub.2 O), (CF.sub.2 O), (C.sub.3 F.sub.6 O), (CF.sub.2 O--CF.sub.2 --CF.sub.2 O), (CF.sub.2 --CF.sub.2 CF.sub.2 O), ##STR1## wherein the R.sub.f III groups, which may be equal to, or different from, one another, are a fluorine atom or a perfluoroalkyl group.