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US3929602A Expired / Lapsed US ⏱️ 0.0 years remaining

Low temperature irradiation of vitrifiable mixtures of unsaturated monomers

Assignee: Japan Atomic Energy Agency
•
Filing: 1972-12-08
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Granted: 1975-12-30
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Expires: 1992-12-08
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Abstract

Abstract A specific mixture containing at least one polymerizable unsaturated monomer which is not vitrifiable by itself can advantageously be polymerized by irradiating the mixture at a temperature not higher than 100*C above glass transition temperature of the mixture with an ionizing radiation and/or a light.

Inventors

  • 👤 Isao Kaetsu
  • 👤 Akihiko Ito
  • 👤 Koichiro Hayashi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 08:27
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/46

Claims Analysis

Total Claims: 24
Claim 1
Independent Claim 28 words
A PROCESS FOR PREPARING A RESINOUS POLYMER AT A LOW TEMPERATURE WHICH, IN SPITE OF THE LOW TEMPERATURE, CAN BE CARRIED OUT AT A HIGH POLYMERIZATION RATE, COMPRISING:
Claim 2
Dependent Claim 28 words
A PROCESS FOR PREPARING A RESINOUS POLYMER AT A LOW TEMPERATURE WHICH, IN SPITE OF THE LOW TEMPERATURE, CAN BE CARRIED OUT AT A HIGH POLYMERIZATION RATE, COMPRISING:
Claim 3
Dependent Claim 64 words
UNIFORMLY MIXING TWO OR MORE ORGANIC COMPOUNDS NEITHER OF WHICH IS VITRIFIABLE INDEPENDENTLY AND AT LEAST ONE OF WHICH IS A POLYMERIZABLE UNSATURATED MONOMER, SAID COMPOUNDS BEING MIXED IN SUCH A RATIO AS TO GIVE A VITRIFIABLE MIXTURE HAVING A GLASS-TRANSISTION POINT AND A MELTING POINT, AND HAVING A TEMPERATURE DIFFERENCE BETWEEN SAID GLASS-TRANSITION POINT AND SAID MELTING POINT OF 70*C. OR LESS; AND
Claim 4
Dependent Claim 64 words
UNIFORMLY MIXING TWO OR MORE ORGANIC COMPOUNDS NEITHER OF WHICH IS VITRIFIABLE INDEPENDENTLY AND AT LEAST ONE OF WHICH IS A POLYMERIZABLE UNSATURATED MONOMER, SAID COMPOUNDS BEING MIXED IN SUCH A RATIO AS TO GIVE A VITRIFIABLE MIXTURE HAVING A GLASS-TRANSISTION POINT AND A MELTING POINT, AND HAVING A TEMPERATURE DIFFERENCE BETWEEN SAID GLASS-TRANSITION POINT AND SAID MELTING POINT OF 70*C. OR LESS; AND
Claim 5
Dependent Claim 21 words
irradiating said mixture with an ionizing radiation or light while maintaining said mixture at a temperature below said glass-transition point; and
Claim 6
Dependent Claim 21 words
irradiating said mixture with an ionizing radiation or light while maintaining said mixture at a temperature below said glass-transition point; and
Claim 7
Dependent Claim 28 words
A process for preparing a resinous polymer at a low temperature which, in spite of the low temperature, can be carried out at a high polymerization rate, comprising:
Claim 8
Dependent Claim 28 words
A process for preparing a resinous polymer at a low temperature which, in spite of the low temperature, can be carried out at a high polymerization rate, comprising:
Claim 9
Dependent Claim 25 words
effecting polymerization by irradiating the mixture with an ionizing radiation or light at a temperature between said glass-transition point and 100*C. above said glass-transition point.
Claim 10
Dependent Claim 25 words
effecting polymerization by irradiating the mixture with an ionizing radiation or light at a temperature between said glass-transition point and 100*C. above said glass-transition point.
Claim 11
Dependent Claim 25 words
EFFECTING POLYMERIZATION BY IRRADIATING THE MIXTURE WITH AN IONIZING RADIATION OF LIGHT AT A TEMPERATURE BETWEEN SAID GLASS-TRANSITION POINT AND 100*C. ABOVE SAID GLASSTRANSITION POINT.
Claim 12
Dependent Claim 25 words
EFFECTING POLYMERIZATION BY IRRADIATING THE MIXTURE WITH AN IONIZING RADIATION OF LIGHT AT A TEMPERATURE BETWEEN SAID GLASS-TRANSITION POINT AND 100*C. ABOVE SAID GLASSTRANSITION POINT.
Claim 13
Dependent Claim 32 words
A process according to claim 1, in which the dose rate of the ionizing radiation is about 102 - 109 roentgens/hr and the total dose thereof is about 102 - 107 roentgens.
Claim 14
Dependent Claim 25 words
raising the temperature and maintaining the temperature between said glass-transition point and 100*C. above said glass-transition point to carry out polymerization of the irradiated mixture.
Claim 15
Dependent Claim 25 words
raising the temperature and maintaining the temperature between said glass-transition point and 100*C. above said glass-transition point to carry out polymerization of the irradiated mixture.
Claim 16
Dependent Claim 32 words
A process according to claim 2, in which the dose rate of the ionizing radiation is about 102 - 109 roentgens/hr and the total dose thereof is about 102 - 107 roentgens.
Claim 17
Dependent Claim 20 words
A process according to claim 1, in which the wave length of the light is about 1,900 - 7,000 A.
Claim 18
Dependent Claim 20 words
A process according to claim 2, in which the wave length of the light is about 1,900 - 7,000 A.
Claim 19
Dependent Claim 20 words
A process according to claim 3, in which the wave length of the light is about 1,900 - 7,000 A.
Claim 20
Dependent Claim 20 words
A process according to claim 4, in which the wave length of the light is about 1,900 - 7,000 A.
Claim 21
Dependent Claim 90 words
A process according to claim 1, in which the polymerizable unsaturated monomer is selected from the group consisting of styrene, methyl methacrylate, methyl acrylate, ethyl acrylate, butyl acrylate, butyl methacrylate, vinyl toluene, vinyl pyridine, vinyl pyrrolidone, vinyl carbazole, acrylic acid, acrylic amide, methacrylic acid, methacrylic amide, methylolated acrylic amide, methylene bis-acrylic amide, methacrylonitrile, acrylonitrile, vinyl acetate, vinyl chloride, vinylidene chloride, butadiene, acetylene, isoprene, isobutylene, divinyl benzene, triallyl cyanurate, diallyl maleate, diallyl itaconate, itaconic acid, acenaphthylene, vinyl stearate, vinyl laurate, isopropenyl methyl ketone, vinyl methyl ketone and homologues of these monomers.
Claim 22
Dependent Claim 90 words
A process according to claim 2, in which the polymerizable unsaturated monomer is selected from the group consisting of styrene, methyl methacrylate, methyl acRylate, ethyl acrylate, butyl acrylate, butyl methacrylate, vinyl toluene, vinyl pyridine, vinyl pyrrolidone, vinyl carbazole, acrylic acid, acrylic amide, methacrylic acid, methacrylic amide, methylolated acrylic amide, methylene bis-acrylic amide, methacrylonitrile, acrylonitrile, vinyl acetate, vinyl chloride, vinylidene chloride, butadiene, acetylene, isoprene, isobutylene, divinyl benzene, triallyl cyanurate, diallyl maleate, diallyl itaconate, itaconic acid, acenaphthylene, vinyl stearate, vinyl laurate, isopropenyl methyl ketone, vinyl methyl ketone and homologues of these monomers.
Claim 23
Dependent Claim 90 words
A process according to claim 7, in which the polymerizable unsaturated monomer is selected from the group consisting of styrene, methyl methacrylate, methyl acrylate, ethyl acrylate, butyl acrylate, butyl methacrylate, vinyl toluene, vinyl pyridine, vinyl pyrrolidone, vinyl carbazole, acrylic acid, acrylic amide, methacrylic acid, methacrylic amide, methylolated acrylic amide, methylene bis-acrylic amide, methacrylonitrile, acrylonitrile, vinyl acetate, vinyl chloride, vinylidene chloride, butadiene, acetylene, isoprene, isobutylene, divinyl benzene, triallyl cyanurate, diallyl maleate, diallyl itaconate, itaconic acid, acenaphthylene, vinyl stearate, vinyl laurate, isopropenyl methyl ketone, vinyl methyl ketone and homologues of these monomers.
Claim 24
Dependent Claim 90 words
A process according to claim 8, in which the polymerizable unsaturated monomer is selected from the group consisting of styrene, methyl methacrylate, methyl acrylate, ethyl acrylate, butyl acrylate, butyl methacrylate, vinyl toluene, vinyl pyridine, vinyl pyrrolidone, vinyl carbazole, acrylic acid, acrylic amide, methacrylic acid, methacrylilc amide, methylolated acrylic amide, methylene bis-acrylic amide, methacrylonitrile, acrylonitrile, vinyl acetate, vinyl chloride, vinylidene chloride, butadiene, acetylene, isoprene, isobutylene, divinyl benzene, triallyl cyanurate, diallyl maleate, diallyl itaconate, itaconic acid, acenaphthylene, vinyl stearate, vinyl laurate, isopropenyl methyl ketone, vinyl methyl ketone and homologues of these monomers.

References Cited (Backward Citations)

US3679562A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-12-29 1979-06-30 1979-12-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-12-29 1983-06-30 1983-12-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-12-29 1987-06-30 1987-12-30 $7700.00 Window Closed / Lapsed

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