Abstract: A tetrafluoroethylene base polymer-containing coating composition comprising a dispersion of a tetrafluoroethylene base polymer having a molecular weight of at least 5,000,000 in a liquid medium containing a surfactant, which is particularly useful for coating a fixing heater roller and a cooking utensil.

Abstract: Partially fluorinated polyesters are disclosed having increased biodegradability and water repellancy. The incorporation of an ester group into the backbone of the partially fluorinated compound permits modification of the compound's physical properties.

Abstract: An ordinary temperature-curable resin composition comprising (A) a hydrolyzable silyl group-containing fluoroolefin copolymer obtained by polymerizing a monomeric mixture comprising a fluoroolefin as an essential component in the presence of a hydrolyzable silyl group-containing compound, (B) a curing catalyst, and (C) an organic solvent.

Abstract: A method is provided for preparation of a fluoropolymeric film on a carrier, comprising:(a) preparing an aqueous dispersion comprising a fluoropolymer;(b) dipping a carrier belt through the dispersion such that a coating of the dispersion is formed on the carrier belt;(c) passing the coated carrier belt through a metering zone to remove excess dispersion;(d) drying the metered coated carrier to remove the water from the dispersion; and(e) heating the dried coated carrier to a temperature sufficient to consolidate the dispersion, wherein the carrier belt is formed from a material of low thermal mass having chemical and dimensional stability at the consolidation temperature of the dispersion and a work of adhesion between the carrier belt and the dispersion that does not exceed the yield strength of the consolidated fluoropolymeric film.

Abstract: An iodine-containing compound consisting of at least two repeating units selected from the formulae:--(CH.sub.2 CF.sub.2 CF.sub.2 O).sub.a ----(CHClCF.sub.2 CF.sub.2 O).sub.b ----(CCl.sub.2 CF.sub.2 CF.sub.2 O).sub.c ----(CHFCF.sub.2 CF.sub.2 O).sub.d ----(CFClCF.sub.2 CF.sub.2 O).sub.e ----(CF.sub.2 CF.sub.2 CF.sub.2 O).sub.f --wherein a, b, c, d, e and f are each 0 or a positive integer and satisfy the following equations:2.ltoreq.a+b+c+d+e+f.ltoreq.200 and1.ltoreq.a+c+d+fand an iodine atom at at least one end of a molecule, which can provide a block copolymer which is useful as a grease.

Abstract: A fluorine containing polymer having a terminal ester group is prepared from the free radical polymerization of an acyclic ketane acetal with a vinyl monomer component including a fluorine containing vinyl monomer.The fluorine containing polymer can be utilized to prepare functional oligomers suitable for many uses including film former and additives for coating applications.

Abstract: A fluorine containing polymer containing ester groups in the backbone of the polymer is prepared by the ring opening free radical polymerization of a cyclic ketene acetal with a vinyl monomer component comprising a fluorine containing vinyl monomer. The aforesaid fluorine containing polymer which contains ester groups can be reacted with a material containing functional groups capable of cleaving the carbon oxygen single bonds of the ester groups. The resultant oligomeric material contains functionality as a result of the cleavage which is suitable for reaction with a crosslinking agent to form a cured film.

Abstract: Cotelomers of vinylidene fluoride with one or more fluoro olefins, having the general formulaR[(CF.sub.2 CH.sub.2)n (C.sub.3 F.sub.6)m (C.sub.2 F.sub.4)p (C.sub.2 F.sub.3 Cl)q]X (I)wherein:X is either Br or I, R is an alkyl radical eventually containing halogen atoms, n is an integer comprised within the range of from 1 to 30, m is an integer comprised within the range of from 0 to 10, p and q are integers comprised within the range of from 0 to 20, and wherein m+p+q is at least 1, obtained by cotelomerizing monomers in the presence of a telogen RX (wherein R and X have the abovesaid meaning) and of a free-radical polymerization initiator.

Abstract: A plastic-clad light-transmitting fiber consisting essentially of a core of quartz glass or optical glass and a clad of plastic material, characterized in that said clad of plastic material is a cured body of a solvent-soluble fluoroolefin polymer having curable sites.

Abstract: The invention relates to a novel fluorine-containing copolymer which comprises 25-75 mol % of chlorotrifluoroethylene, 10-70 mol % of a vinyl or isopropenyl ester of fatty acid and 3-40 mol % of allylglycidyl ether and may optionally comprise additional comonomer(s) such as an acrylate. This copolymer possesses favorable properties characteristic of fluororesins, is soluble in various organic solvents and is curable with a compound having a functional group that reacts with epoxy group. A coating liquid using this copolymer gives a hard, stable and transparent coating film on either metal surface or glass surface.

Abstract: Novel polyorganosiloxane polymers having at least one terminal cyclic diorganosiloxane moiety containing a plurality of acrylic units of the formula ##STR1## wherein R.sup.1 is H or lower alkyl; X is O, NH or S; and Y is a divalent linking group.

Abstract: A solvent soluble fluorine-containing polymer according to the present invention is a copolymer characterized by(i) consisting substantially of(a) fluoroolefin,(b) vinyl ether, and(c) an organosilicon compound having an olefinically unsaturated bond and a hydrohyzable group,(ii) said copolymer comprising, based on the total mole number of said (a)-(c) in the copolymer, 30-70 mol % of (a), 20-60 mol % of (b) and 1-25 mol % of (c) and(iii) said copolymer having a number average molecular weight (Mn) of 3000-200000 as measured by gel permeation chromatography.Further, according to the present invention, a coating composition having excellent weathering resistance and solvent resistance comprising the above-mentioned solvent soluble fluorine-containing polymer and organic solvent is also provided. In addition a coating process of said coating composition is also provided.

Abstract: A flame-retardant resin having excellent moldability composed essentially of a fluorine-containing copolymer obtained by the copolymerization of tetrafluoroethylene, chlorotrifluoroethylene and ethylene, wherein the copolymer comprises from 10 to 60 molar % of tetrafluoroethylene, from 20 to 60 molar % of chlorotrifluoroethylene and from 20 to 40 molar % of ethylene, and has a thermal decomposition temperature of at least 325.degree. C.

Abstract: Derivatives of diphenylhexafluoropropane having the formula: ##STR1## where R is an unsubstituted or substituted alkylene, an epoxy, a silyl or alkoxysilyl group; and where X and Y are hydrogen or halogen. The derivatives are useful in formulating polymer structures.

Abstract: An extrudable fluoroelastomer comprising a gelled fluoroelastomer having units of vinylidene fluoride and units of at least one other fluorine-containing monomer copolymerizable with vinylidene fluoride, said monomer containing from 2-7 carbon atoms, containing no bromine atoms and containing at least as many flourine atoms as carbon atoms, said fluoroelastomer having been simultaneously mixed, sheared and gelled by an organic peroxide gelling agent to a gel content of from about 15-80% by weight, measured in methyl ethyl ketone at 80.degree. C.

Abstract: A solvent soluble fluorine-containing polymer according to the present invention is a copolymer characterized by(i) consisting substantially of(a) fluoroolefin,(b) vinyl ether, and(c) an organosilicon compound having an olefinically unsaturated bond and a hydrohyzable group,(ii) said copolymer comprising, based on the total mole number of said (a)-(c) in the copolymer, 30-70 mol % of (a), 20-60 mol % of (b) and 1-25 mol % of (c) and(iii) said copolymer having a number average molecular weight (Mn) of 3000-200000 as measured by gel permeation chromatography.Further, according to the present invention, a coating composition having excellent weathering resistance and solvent resistance comprising the above-memtioned solvent soluble fluorine-containing polymer and organic solvent is also provided. In addition a coating process of said coating composition is also provided.

Abstract: There are prepared silafluoroolefins and silafluoroolefin ethers and polymers thereof by reacting carbon with silicon tetrafluoroide and a source of hydrogen followed by polymerization. The polymers are useful for architectural purposes and as release coatings.

Abstract: Fluorine-containing copolymers are prepared by free radical-initiated copolymerization of ethylenically unsaturated, copolymerizable monomers, containing vinyl esters, 0.05 to 60% by weight, relative to the total amount of monomers employed, of fluorine-containing monomers in which the copolymerizable ethylene group is substituted by radicals containing fluorocarbon groups, the fluorocarbon groups being composed of at least 2 adjacent carbon atoms having F--C bonds, if appropriate, ethylenically unsaturated monocarboxylic and/or dicarboxylic acids, and if appropriate, further monomers, and, if appropriate, the subsequent partial or complete saponification of the vinyl ester units present in the resulting copolymers to give vinyl alcohol units.

Abstract: A fluorine-containing copolymer comprising structural units of the formula (a):--CH.sub.2 CF.sub.2 -- (a)structural units of the formula (b): ##STR1## wherein n is an integer of 1 to 10 and structural units of the formula (c):--CFX--CFY-- (c)wherein X is --H, --Cl or --F and Y is --F, a lower fluoroalkyl group or a group having the formula: ##STR2## in which m is 0 or an integer of 1 to 3 and a curable composition comprising the fluorine-containing copolymer and a curing agent. The fluorine-containing copolymer is compatible with acrylic resins and is excellent in transparency, and the composition can be employed as a room temperature curing paints material.

Abstract: Hydrogel compositions characterized by a copolymer composition which includes a hydroxyfluoroalkylstyrene as a comonomer. The preferred comonomer compound is p-(2-hydroxyhexafluoroisopropyl)-styrene [HFIS].

Abstract: A fluoroolefin copolymer having an inherent viscosity of from 0.05 to 2.0 dl/g and composed of(I) 10 to 70 mole % of monomeric units derived from a fluoroolefin represented by the general formula ##STR1## wherein X is H, Cl, F, CF.sub.3, OCF.sub.3 or OC.sub.3 F.sub.7, (II) 5 to 60 mole % of monomeric units derived from a vinyl carboxylate represented by the general formula ##STR2## wherein R.sub.1 represents an aliphatic, aromatic or alicyclic hydrocarbon group having 1 to 17 carbon atoms,(III) 5 to 70 mole % of monomeric units derived from a vinyl ether having an alkyl group with 1 to 8 carbon atoms, and(IV) 0 to 30 mole % of monomeric units derived from a hydroxyl-containing vinyl ether represented by the general formula ##STR3## wherein R.sub.2 represents an alkylene group having 1 to 6 carbon atoms.

Abstract: Tetrafluoroethylene fine powder resins are described which have surprisingly high extrusion pressures and molecular weights which make them useful in post-paste extruded stretching operations. The resins are made by using a manganese triacetate/selected reducing agent polymerization initiator and controlling its rate of addition.

Abstract: Polymerizable monomer compounds selected from the group having the formulae: ##STR1## wherein R is hydrogen or methyl;X is fluoro, chloro, bromo, iodo, perfluoroalkylsulfonoxy of one to three carbon atoms, perfluoroacyloxy of one to three carbon atoms, benzoyloxy, or trichloroacetoxy;Y is trichloroacetyl, perfluoroacyl of the formula ##STR2## trialkylsilyl of the formula [CH.sub.3 (CH.sub.2).sub.m ].sub.3 Si--; wherein n is zero to six; and m is zero to three.Polymers and copolymers of the invention are useful for preparing hydrogel processed articles such as ophthalmic devices, and when dissolved in solvents they can be coated onto articles and then hydrolyzed to provide hydrogel coatings.

Abstract: Ultrafine fiber of an ethylene tetrafluoride copolymer having an orientation degree (.pi.) of at least 0.6 and an average fineness of 0.0001 to 0.9 denier. A process for producing such fiber or a porous membrane thereof is also disclosed.

Abstract: Disclosed is a curable fluorine-containing copolymer, comprising 25-75 mol % of first repeating units which originate from chlorotrifluoroethylene, 10-70 mol % of second repeating units which originate from a vinyl or isopropenyl ester of fatty acid, such as vinyl acetate or isopropenyl acetate, 3-40 mol % of third repeating units which originate from a hydroxyl-containing allyl ether such as ethylene glycol monoallyl ether and 0-20 mol % of optional repeating units which originate from an optional monomer such as an acrylate. This copolymer possesses favorable properties characteristic of fluoro-resins, is soluble in organic liquids and is curable with a compound having a functional group that reacts with active hydrogen, such as a polyisocyanate. A coating liquid composition obtained by adding such a curing agent to a solution of the copolymer in an organic solvent is of wide use for painting and other coating purposes.

Abstract: A transparent film of a vinylidene fluoride copolymer, comprising a dry film of a vinylidene fluoride copolymer having a parallel light transmittance of 85% or higher at a film thickness of 30 microns. The transparent film is obtained by forming a mixture of a vinylidene fluoride copolymer having a specifically high molecular weight with a solvent into a film, preferably by casting, and evaporating off the solvent.

Abstract: Fluoroelastomeric compositions based on vinylidene fluoride, having a high adhesion to metals in the vulcanized state, and characterized in that they contain small amounts of chlorotrifluoroethylene which is present as a comonomer of an elastomeric copolymer of vinylidene fluoride.

Abstract: A thermoplastic, non-thermosettable copolymer of tetrafluoroethylene, an iodoperfluoroalkyl ethylene and an optional selected third comonomer. The copolymer can be extruded at higher rates than heretofore possible.

Abstract: An optical material comprising a copolymer of:(1) ethylene,(2) at least one of tetrafluoroethylene and chlorotrifluoroethylene and(3) olefin having at least one fluoroalkyl group,and a cladding material as used in assembling an optical fiber which comprises the copolymer as defined in above.

Abstract: Disclosed herein is a soft, putty-like material for lining a denture base, comprising 100 parts by weight of a monomeric compound represented by the formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a methyl group and R.sup.2 represents a residual group formed by removing a hydroxyl group from a fluorine-containing telomer having a molecular weight of less than 1500, 3 to 30 parts by weight of a fluorine-containing copolymer, 3 to 30 parts by weight of a C.sub.1 to C.sub.12 -alkyl acrylate or methacrylate and 0.1 to 3.0 parts by weight of a polymerization-initiator.

Abstract: .beta.-Substituted polyfluoroethyl compounds, process for the preparation thereof, copolymers thereof, compound intermediates, and process therefor. The copolymers are useful as ion exchange resins or structural foams.

Abstract: Vinylidene fluoride polymers having a wide range of molecular weights are produced with reduced initiator consumption by using trichlorofluoromethane as a chain transfer agent in the emulsion polymerization process. Vinylidene fluoride homopolymers made by the process have a significantly reduced tendency to generate cavities at high temperatures and a greater resistance to discoloration at high temperatures.

Abstract: Peroxide-curable fluorocarbon elastomers having interpolymerized units derived from a cure site monomer containing bromine or iodine. The fluorocarbon elastomer gums are prepared by copolymerizing with the principal monomers normally used in preparing fluorocarbon elastomers, e.g. vinylidene fluoride, hexafluoropropene, and (optionally) tetrafluoroethylene, a small amount of a novel cure site monomer which is a vinyl ether in which at least one of the two vinylic (or double-bonded) carbon atoms thereof is bonded to at least one bromine or iodine atom, e.g. CF.sub.3 CH.sub.2 OCF.dbd.CFBr. The cured fluorocarbon elastomers of this invention have useful properties normally associated with fluorocarbon elastomers, such as acid resistance, thermal stability, and high tensile strength. These properties of shaped articles made from these fluorocarbon elastomers are not adversely affected upon exposure to high temperatures for extended periods.

Abstract: A fluorine-containing olefin of the formula: CF.sub.2 .dbd.CF(CF.sub.2).sub.m (CH.sub.2).sub.n OH wherein m is 0 or an integer of 1 to 10 and n is an integer of 1 to 4, which is copolymerizable with various ethylenically unsaturated compounds and provide fluorine-containing copolymers useful as raw materials for room temperature curing paints, fluorine-containing rubbers and the like.

Abstract: The dielectric polymer materials are composed of about 25 to 90 mol % of vinylidene fluoride, about 5 to 70 mol % of ethylene trifluoride, and about 1 to 13 mol % of ethylene chloride trifluoride. The dielectric polymer materials possess a high dielectric constant and do not vary in dielectric constants with temperatures.

Abstract: Mixture of tetrafluoroethylene/hexafluoropropylene (TFE/HFP) copolymers comprising 5 to 20% by weight of hexafluoropropylene, the specific melt viscosity at 380.degree. C. of which is from 1.times.10.sup.4 to 60.times.10.sup.4 poise,(a) the melt flow ratio being at least 3.5, and(b) the zero strength time (ZST, second) at 380.degree. C. satisfying the following equation:ZST.gtoreq.1/3x.sup.2 +17x+107wherein x is (specific melt viscosity).times.10.sup.-4 having an improved extrudability, particularly an improved extrusion speed. These mixtures of copolymers contain a high specific melt viscosity portion and a low specific melt viscosity portion.

Abstract: A film of semi-crystalline poly(chlorotrifluoroethylene) or a semi-crystalline copolymer of chlorotrifluoroethylene which contain up to 5% comonomer units which film exhibits upon heat shrinking, no expansion in the direction perpendicular to stretching.

Abstract: A novel fluorine-containing copolymer having functional groups comprising structural units of 1,1-difluoroethylene and structural units of a monomeric compound of the formula: ##STR1## wherein X is --OH, ##STR2## or --COOH group, m is 0 or an integer of 1 to 10 and n is an integer of 1 to 4, which may futher contain structural units of at least one monomer selected from the group consisting of tetrafluoroethylene, chlorotrifluoroethylene, monofluoroethylene 1,1,2-trifluoroethylene, hexafluoropropene and a fluoroalkyl vinyl ether. The copolymer is curable at room temperature, and is useful as a material for fluorine-containing rubbers, molded articles and paints.

Abstract: A peroxide curable fluoroelastomer composition wherein the composition comprises a tetrapolymer whose interpolymerized units consist essentially of units derived from: (1) about 30-40 weight percent vinylidene fluoride, (2) about 30-40 weight percent of the fluorine-containing monomers hexafluoropropylene or pentafluoropropylene, (3) about 25-35 weight percent tetrafluoroethylene and (4) up to 3 mole percent of units, based upon the tetrapolymer, derived from a bromine-containing olefin, with the proviso that enough of such units are present to provide 0.05 weight percent bromine in the tetrapolymer, the units of the bromine-containing olefin are derived from a compound having the formula CX.sub.2 .dbd.CX(CY.sub.2).sub.n (CZ.sub.2).sub.2 Br where X is hydrogen or fluorine, Y is hydrogen, fluorine or chlorine, Z is fluorine or chlorine and n is 0-5 and said fluoroelastomer composition contains at least 1 part per hundred parts tetrapolymer of trimethallylisocyanurate.

Abstract: Tetrafluoroethylene fine powder resins are made by adjusting temperature during polymerization wherein:(a) at the beginning of the polymerization the temperature is between 70.degree.-90.degree. C.,(b) when between 5-30% of the total amount of tetrafluoroethylene has been polymerized, the temperature is raised to between 100.degree.-125.degree. C.,(c) after 20-80% of the total tetrafluoroethylene has been polymerized and after step (b) has been carried out, the temperature is lowered by at least 30.degree. C. from the temperature used in step (b).

Abstract: A fluorine-containing polymer substantially comprising (A) at least one fluorine-containing olefin of the formula:CF.sub.2 =CXYwherein X is a hydrogen atom or a fluorine atom and Y is a hydrogen atom, a chlorine atom, a fluorine atom, a trifluoromethyl group, a difluoromethyl group, a C.sub.1 -C.sub.3 perfluoroalkoxy group or a group of the formula:--(CF.sub.2).sub.m COOMwherein m is an integer of 0 to 3 and M is a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, a sodium atom or a potassium atom but when X is a hydrogen atom, Y is always a hydrogen atom, (B) one or more C.sub.4 -C.sub.8 fluorine-containing dienes, (C) at least one iodine atom and (D) at least one saturated or unsaturated fluoro or chlorofluorohydrocarbon group, the molar ratio of the diene (B) and the olefin (A) being from 1.times.10.sup.-4 to 5.times.10.sup.-2, the iodine atom(s) (C) being from 0.001 to 10% by weight based on the weight of the polymer and the molar ratio of the group (D) and the olefin (A) being from 1.times.10.sup.-5 to 5.

Abstract: A process for the suspension copolymerization of vinyl chloride and chlorotrifluoroethylene to form a copolymer having a constant weight ratio of vinyl chloride and chlorotrifluoroethylene independent of conversion, which consists in polymerization with an initial charge containing excess vinyl chloride and adding additional vinyl chloride prior to reaching the conversion where the copolymer composition changes.

Abstract: A copolymer comprising monomeric units derived from ethylene, tetrafluoroethylene or chlorotrifluoroethylene and a fluorovinyl compound of the formula:CH.sub.2 .dbd.CFRf (I)wherein Rf is a C.sub.2 -C.sub.10 fluoroalkyl group, a molar ratio of ethylene and tetrafluoroethylene or chlorotrifluoroethylene being from 40:60 to 60:40 and the content of the fluorovinyl compound being from 0.1% to 10% by mole having improved thermal resistance and high temperature mechanical properties such as crack resistance.

Abstract: A film of a fluorocarbon copolymer of ethylene, and tetrafluoroethylene or chlorotrifluoroethylene, which upon heat shrinking in the longitudinal direction, does not expand in the transverse direction.

Abstract: An easily cross linkable fluorine-containing polymer comprising: (1) a polymeric chain comprising one or more polymer segments, at least one polymer segment of which consists of units of at least one fluorine-containing ethylenically unsaturated compound having 2 to 8 carbon atoms, or units of said fluorine-containing ethylenically unsaturated compound and at least one other monomer selected from the group consisting a fluorine-free ethylenically unsaturated compound having 2 to 4 carbon atoms and a fluorine-containing diene having 4 to 8 carbon atoms, (2) at least one bromine atom liberated from a brominated compound of the formula: RBr.sub.x (wherein R is a saturated hydrocarbon residue and x is a number corresponding to the bonding valency of the residue R) in an amount of 0.

Abstract: A method of emulsion copolymerization of ethylene and chlorotrifluoroethylene in the presence of a water soluble initiator and a water soluble fluorosurfactant. The fluorosurfactant having the general formula: CA.sub.3 (CF.sub.2).sub.B (C.sub.2 H.sub.4).sub.D -X wherein A is selected from H and F, B is 1 to 10, D is 1 to 6, and X is a hydrophilic group.

Abstract: .beta.-substituted polyfluoropropionate salts, derivatives and copolymers and processes for the preparation thereof.

Abstract: The present invention is an improved process for the aqueous copolymerization of ethylene and chlorotrifluoroethylene in the presence of a catalyst. The catalyst comprises an oxidizing agent and a reducing agent with a sufficient amount of a water soluble buffer compound to maintain the pH from above 7 to about 10. The improvement comprises the addition of from 0.1 to 10 parts per million preferably 1 to 10 parts per million by weight of a cupric cation based on the weight of the aqueous medium.

Abstract: Polybismaleimides prepared by delayed curing of bis-imides having the formula ##STR1## wherein R.sub.1 and R.sub.2 each independently is H, C.sub.1-4 -alkyl, C.sub.1-4 -alkoxy, Cl or Br, orR.sub.1 and R.sub.2 together form a fused 6-membered hydrocarbon aromatic ring, with the proviso that R.sub.1 and R.sub.2 are not t-butyl or t-butoxy;X is O, S or Se;n is 1-3; andthe --(CH.sub.2).sub.n -- group, optionally, is substituted by 1-3 methyl groups or by fluorine.

Abstract: A process for rapidly curing a fluoroelastomer which comprises mixing and heating a fluoroelastomer copolymer whose interpolymerized units consist essentially of vinylidene fluoride, at least one other fluorine-containing monomer copolymerizable therewith, said monomer being a compound which contains 2-7 carbon atoms, contains no bromine, and contains at least as many fluorine atoms as carbon atoms and contains up to 3 mole percent of units derived from a bromine-containing olefin; a quaternary phosphonium compound; a bisphenol or an ammonium or phosphonium salt thereof; and a dialkylaminopyridine or a diazabicyclo compound having the formula ##STR1## where n is 2-8 or 0.2-0.8 parts by weight per hundred parts fluoroelastomer of a carboxylic acid salt of (a) or (b).