US3884995A — Non-flocculated dispersions of perfluoroolefin po…

Claim 1

Independent Claim 68 words

A PROCESS FOR PREPARING A DISPERSION IN AN ORGANIC LIQUID OF PARTICLES OF PERFLUOROOLEFIN POLYMER WHICH COMPRISES: A. CONTACTING 1. 4-12 VOLUMES OF AN AQUEOUS DISPERSION OF PARTICLES OF PERFLUOROOLEFIN POLYMER CONSISTING ESSENTIALLY OF POLYMERS OF TETRAFLUOROETHYLENE AND COPOLYMERS OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPYLENE THE POLYMER BEARING FUNCTIONAL GROUPS AND THE DISPERSION BEING SUBSTANTIALLY FREE OF IONIC CONTAMINANTS THAT WOULD MATERIALLY INTERFERE WITH THE REACTION DESCRIBED IN 3 BELOW,

Claim 2

Dependent Claim 68 words

A PROCESS FOR PREPARING A DISPERSION IN AN ORGANIC LIQUID OF PARTICLES OF PERFLUOROOLEFIN POLYMER WHICH COMPRISES: A. CONTACTING 1. 4-12 VOLUMES OF AN AQUEOUS DISPERSION OF PARTICLES OF PERFLUOROOLEFIN POLYMER CONSISTING ESSENTIALLY OF POLYMERS OF TETRAFLUOROETHYLENE AND COPOLYMERS OF TETRAFLUOROETHYLENE AND HEXAFLUOROPROPYLENE THE POLYMER BEARING FUNCTIONAL GROUPS AND THE DISPERSION BEING SUBSTANTIALLY FREE OF IONIC CONTAMINANTS THAT WOULD MATERIALLY INTERFERE WITH THE REACTION DESCRIBED IN 3 BELOW,

Claim 3

Dependent Claim 10 words

one volume of an organic liquid immiscible with water, and

Claim 4

Dependent Claim 10 words

one volume of an organic liquid immiscible with water, and

Claim 5

Dependent Claim 10 words

ONE VOLUME OF AN ORGANIC LIQUID IMMISCIBLE WITH WATER, AND

Claim 6

Dependent Claim 10 words

ONE VOLUME OF AN ORGANIC LIQUID IMMISCIBLE WITH WATER, AND

Claim 7

Dependent Claim 27 words

The process of claim 1 wherein the stabilizer is present in an amount of at least 10% by weight based on the weight of the perfluoroolefin polymer.

Claim 8

Dependent Claim 190 words

at least about 10% by weight, based on weight of perfluoroolefin polymers, of a stabilizer which is a polymer formed from 99.9-20% by weight, based on the total weight of the stabilizer, of monomers selected from the groups consisting essentially of esters of acrylic acid or methacrylic acid with alkanols of C1-C18, vinyl esters of fatty acids having 2-20 carbon atoms, styrene, acrylonitrile, methacrylonitrile and mixtures of the foregoing and 0.1-80% by weight, based on the total weight of the stabilizer, of monomer bearing functional groups that will interact with those born by the perfluoroolefin polymer, the stabilizer being present in such an amount and the contacting being done under conditions in which some of the functional groups of the perfluoroolefin polymer and the functional groups of the stabilizer interact thereby causing at least some of the perfluoroolefin polymer particles that have interacted with the stabilizer to be transferred to the organic liquid, B. decanting up to 95% of the total water present the said percentage of the total water having formed into a separate phase, and C. separating the organic liquid containing perfluoroolefin polymers particles from the remaining water.

Claim 9

Dependent Claim 190 words

at least about 10% by weight, based on weight of perfluoroolefin polymers, of a stabilizer which is a polymer formed from 99.9-20% by weight, based on the total weight of the stabilizer, of monomers selected from the groups consisting essentially of esters of acrylic acid or methacrylic acid with alkanols of C1-C18, vinyl esters of fatty acids having 2-20 carbon atoms, styrene, acrylonitrile, methacrylonitrile and mixtures of the foregoing and 0.1-80% by weight, based on the total weight of the stabilizer, of monomer bearing functional groups that will interact with those born by the perfluoroolefin polymer, the stabilizer being present in such an amount and the contacting being done under conditions in which some of the functional groups of the perfluoroolefin polymer and the functional groups of the stabilizer interact thereby causing at least some of the perfluoroolefin polymer particles that have interacted with the stabilizer to be transferred to the organic liquid, B. decanting up to 95% of the total water present the said percentage of the total water having formed into a separate phase, and C. separating the organic liquid containing perfluoroolefin polymers particles from the remaining water.

Claim 10

Dependent Claim 42 words

The process of claim 1 wherein the functional groups born by the perfluoroolefin polymer and the stabilizer are selected from the group consisting essentially of -COOH, -SO3H, primary amines, secondary amines, tertiary amines, glycidyl, hydroxyl, heterocyclic aromatic bases and iminated -COOH groups.

Claim 11

Dependent Claim 190 words

AT LEAST ABOUT 10% BY WEIGHT, BASED ON WEIGHT OF PERFLUOROOLEFIN POLYMERS, OF A STABILIZER WHICH IS A POLYMER FORMED FROM 99.9-20% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE STABILIZER, OF MONOMERS SELECTED FROM THE GROUPS CONSISTING ESSENTIALLY OF ESTERS OF ACRYLIC ACID OR METHACRYLIC ACID WITH ALKANOLS OF C1-C18, VINYL ESTERS OF FATTY ACIDS HAVING 2-20 CARBON ATOMS, STYRENE, ACRYLONITRILE, METHACRYLONITRILE AND MIXTURES OF THE FOREGOING AND 0.1-80% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE STABILIZER, OF MONOMER BEARING FUNCTIONAL GROUPS THAT WILL INTERACT WITH THOSE BORN BY THE PERFLUOROOLEFIN POLYMER, THE STABILIZER BEING PRESENT IN SUCH AN AMOUNT AND THE CONTACTING BEING DONE UNDER CONDITIONS IN WHICH SOME OF THE FUNCTIONAL GROUPS OF THE PERFLUOROOLEFIN POLYMER AND THE FUNCTIONAL GROUPS OF THE STABILIZER INTERACT THEREBY CAUSING AT LEAST SOME OF THE PERFLUOROOLEFIN POLYMER PARTICLES THAT HAVE INTERACTED WITH THE STABILIZER TO BE TRANSFERRED TO THE ORGANIC LIQUID, B. DECANTING UP TO 95% OF THE TOTAL WATER PRESENT THE SAID PERCENTAGE OF THE TOTAL WATER HAVING FORMED INTO A SEPARATE PHASE, AND C. SEPARATING THE ORGANIC LIQUID CONTAINING PERFLUOROOLEFIN POLYMERS PARTICLES FROM THE REMAINING WATER.

Claim 12

Dependent Claim 190 words

AT LEAST ABOUT 10% BY WEIGHT, BASED ON WEIGHT OF PERFLUOROOLEFIN POLYMERS, OF A STABILIZER WHICH IS A POLYMER FORMED FROM 99.9-20% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE STABILIZER, OF MONOMERS SELECTED FROM THE GROUPS CONSISTING ESSENTIALLY OF ESTERS OF ACRYLIC ACID OR METHACRYLIC ACID WITH ALKANOLS OF C1-C18, VINYL ESTERS OF FATTY ACIDS HAVING 2-20 CARBON ATOMS, STYRENE, ACRYLONITRILE, METHACRYLONITRILE AND MIXTURES OF THE FOREGOING AND 0.1-80% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE STABILIZER, OF MONOMER BEARING FUNCTIONAL GROUPS THAT WILL INTERACT WITH THOSE BORN BY THE PERFLUOROOLEFIN POLYMER, THE STABILIZER BEING PRESENT IN SUCH AN AMOUNT AND THE CONTACTING BEING DONE UNDER CONDITIONS IN WHICH SOME OF THE FUNCTIONAL GROUPS OF THE PERFLUOROOLEFIN POLYMER AND THE FUNCTIONAL GROUPS OF THE STABILIZER INTERACT THEREBY CAUSING AT LEAST SOME OF THE PERFLUOROOLEFIN POLYMER PARTICLES THAT HAVE INTERACTED WITH THE STABILIZER TO BE TRANSFERRED TO THE ORGANIC LIQUID, B. DECANTING UP TO 95% OF THE TOTAL WATER PRESENT THE SAID PERCENTAGE OF THE TOTAL WATER HAVING FORMED INTO A SEPARATE PHASE, AND C. SEPARATING THE ORGANIC LIQUID CONTAINING PERFLUOROOLEFIN POLYMERS PARTICLES FROM THE REMAINING WATER.

Claim 13

Dependent Claim 58 words

The process of claim 1 wherein the perfluoroolefin polymer is a blend of perfluoroolefin polymer having a molecular weight of at least 20,000 and an amount of perfluoroolefin polymer having a molecular weight of less than 20,000 that is sufficient to cause the transfer of at least some of each of such perfluoroolefin polymers to the organic liquid.

Claim 14

Dependent Claim 43 words

The process of claim 4 wherein the perfluoroolefin polymer having a molecular weight of less than 20,000 is present in an amount of about 0.1-25% by weight, based on the weight of the perfluoroolefin polymer having a molecular weight of greater than 20,000.

Claim 15

Dependent Claim 68 words

The process of claim 1 wherein the monomers bearing functional groups forming the stabilizer are selected from the group consisting essentially of N,N-dimethylaminoethyl methacrylate, t-butylaminoethyl methacrylate, aminoethyl vinyl ether, aminoethyl methacrylate, 4-vinyl pyridine, vinyl pyrrolidine, acrylic acid or methacrylic acid that has been iminated, 3-( Beta -methacryloxyethyl)-2,2-spirocyclohexyloxyazolidine, glycidyl acrylate, glycidyl methacrylate, aziridinyl acrylate, aziridinyl methacrylate, acrylic acid, methacrylic acid, crotonic acid, itaconic acid and mixtures of the foregoing.

Claim 16

Dependent Claim 56 words

The process of claim 6 wherein the monomers bearing functional groups are present in an amount of about 0.1-25% by weight, based on the total weight of the stabilizer, and the other monomers used to form the stabilizer are present in an amount of about 99.9-75% by weight, based on the total weight of the stabilizer.

Claim 17

Dependent Claim 25 words

The process of claim 1 wherein the functional groups carried by the perfluoroolefin polymer are selected from the group consisting essentially of -COOH and -SO3H.

Claim 18

Dependent Claim 12 words

The process of claim 1 wherein the organic liquid is mineral oil.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-05-19	1978-11-18	1979-05-20	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-05-19	1982-11-18	1983-05-20	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-05-19	1986-11-18	1987-05-20	$7700.00	Window Closed / Lapsed

Non-flocculated dispersions of perfluoroolefin polymer particles in organic liquid

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