US4039634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped articles made from a mixture of polyvinylidene fluoride and a copolymer of methyl methacrylate and a comonomer containing a quaternary ammonium group
Assignee: Rhone Poulenc Textile SA
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Filing: 1975-04-14
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Granted: 1977-08-02
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Expires: 1995-04-14
Abstract
Abstract The invention relates to shaped structures, e.g., filaments, fibers or films based on poly(vinylidene fluoride) possessing good dyeing affinity for acid and metal-containing dyestuffs and comprising a fiber and filament forming mixture of poly(vinylidene fluoride) and a copolymer containing 80-95% by weight of methyl methacrylate and 5-20% by weight of a compound which contains a quaternary ammonium group and is copolymerizable with methyl methacrylate. The filaments and fibers according to the invention can advantageously be used in the textile field.
Inventors
- 👤 Paul Couchoud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:26
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/16; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; D; D01; D01F; D01F6/00; D01F6/44; D01F6/48; D01F6/52; D06; D06P; D06P3/00; D06P3/79; D06P3/791
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
58 words
Shaped articles based on poly(vinylidene fluoride) possessing good dyeing affinity for acid and metal-containing dyestuffs, comprising a mixture of a vinylidene fluoride homopolymer (A) and a copolymer (B) containing 80 to 95% by weight of methyl methacrylate and 5 to 20% by weight of a compound which contains a quaternary ammonium group and is copolymerisable with methyl methacrylate.
Claim 2
Dependent Claim
58 words
Shaped articles based on poly(vinylidene fluoride) possessing good dyeing affinity for acid and metal-containing dyestuffs, comprising a mixture of a vinylidene fluoride homopolymer (A) and a copolymer (B) containing 80 to 95% by weight of methyl methacrylate and 5 to 20% by weight of a compound which contains a quaternary ammonium group and is copolymerisable with methyl methacrylate.
Claim 3
Dependent Claim
33 words
Shaped articles according to claim 1, wherein the copolymer (B) contains 85 to 92% by weight of methyl methacrylate and 8 to 15% by weight of the compound containing a quaternary ammonium group.
Claim 4
Dependent Claim
93 words
Shaped articles according to claim 2, wherein the compound containing a quaternary ammonium group has the formula: ##STR3## in which: R: represents a hydrogen atom or a methyl radical, R': represents a --COOR"-- or --CONHR"-- radical in which R" is a divalent hydrocarbon radical containing 1 to 4 carbon atoms, R 1 , r 2 and R 3 represent hydrocarbon radicals containing 1 to 4 carbon atoms, and A n - represents a stable anion, of valency n, of a strong acid, and n is an integer greater than or equal to 1.
Claim 5
Dependent Claim
63 words
Shaped articles according to claim 2, wherein the compound containing a quaternary ammonium group has the formula: ##STR4## in which R represents a --CH 3 radical or a hydrogen atom, R' a hydrocarbon radical containing 1 to 4 carbon atoms, A n - a stable anion, of valency n, of a strong acid, and n an integer greater than or equal to 1.
Claim 6
Dependent Claim
17 words
Shaped articles according to claim 3, wherein the monomer copolymerised with methyl methacrylate is N-trimethylethylammonium methacrylate para-toluenesulphonate.
Claim 7
Dependent Claim
16 words
Shaped articles according to claim 4, wherein the monomer copolymerised with methyl methacrylate is N-methyl-2-methyl-5-vinyl-pyridinium para-toluenesulphonate.
Claim 8
Dependent Claim
23 words
Shaped articles according to claim 1, wherein the poly(vinylidene fluoride) possesses a melt flow index of at least 10, measured at 250° C.
Claim 9
Dependent Claim
21 words
Shaped articles according to claim 1, wherein the mixture of the two polymers contains at least 40 base milliequivalents per kg.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |