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US3931123A Expired / Lapsed US ⏱️ 0.0 years remaining

Hydrophilic nitrite copolymers

Assignee: Czech Academy of Sciences
•
Filing: 1973-04-30
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Granted: 1976-01-06
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Expires: 1993-04-30
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Abstract

Abstract A composition of matter with improved mechanical properties which contain 2 - 50 mol. percent of methacrylonitrile or acrylonitrile and 50 - 98 mol. percent of glycol monoesters of acrylic or methacrylic acid, where the glycol is selected from the group comprising ethylene glycol, diethylene glycol, triethylene glycol and their mixtures. 0.1 - 30 mol. percent of the glycol monoesters may be substituted by a crosslinking agent selected from the group comprising 1,4-cyclohexanedimethyl dimethacrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, 1,6-hexamethylene-bis-acrylamide, triethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate, methylene-bis-acrylamide, ethylene-bis-acrylamide. Also hydrogen catalysts of compositions bonded to platinum, palladium or rhodium metal. A process for producing the matter, wherein glycol esters of acrylic or methacrylic acid are copolymerized with methacrylonitrile or acrylonitrile, if desired in the presence of a crosslinking agent.

Inventors

  • 👤 Jiri Vacik
  • 👤 Jindrich Kopecek

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 18:06
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/10; C08F220/20; Y; Y10; Y10S; Y10S521/00; Y10S521/905

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 56 words
A composition comprising a hydrophilic copolymer having reactive -C.tbd.N groups, which contains (A) 2 - 50 mol. percent of methacrylonitrile or acrylonitrile and (B) 50 - 98 mol. percent of glycol monoesters of acrylic or methacrylic acid, where the glycol is selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol and their mixtures.
Claim 2
Dependent Claim 56 words
A composition comprising a hydrophilic copolymer having reactive -C.tbd.N groups, which contains (A) 2 - 50 mol. percent of methacrylonitrile or acrylonitrile and (B) 50 - 98 mol. percent of glycol monoesters of acrylic or methacrylic acid, where the glycol is selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol and their mixtures.
Claim 3
Dependent Claim 89 words
A composition comprising a hydrophilic copolymer having reactive -C.tbd.N groups, which contains (A) 2 - 50 mol. percent of methacrylonitrile or acrylonitrile, (B) 97.9 - 20 percent glycol monoesters of acrylic or methacrylic acid, wherein the glycol is selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol and their mixtures, and (C) 0.1 - 30 mol. percent of a cross-linking agent selected from the group consisting of 1,4-cyclohexane dimethyl dimethacrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, 1,6-hexamethylene-bis-acrylamide, triethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate, methylene-bis-acrylamide, and ethylene-bis-acrylamide.
Claim 4
Dependent Claim 89 words
A composition comprising a hydrophilic copolymer having reactive -C.tbd.N groups, which contains (A) 2 - 50 mol. percent of methacrylonitrile or acrylonitrile, (B) 97.9 - 20 percent glycol monoesters of acrylic or methacrylic acid, wherein the glycol is selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol and their mixtures, and (C) 0.1 - 30 mol. percent of a cross-linking agent selected from the group consisting of 1,4-cyclohexane dimethyl dimethacrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, 1,6-hexamethylene-bis-acrylamide, triethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate, methylene-bis-acrylamide, and ethylene-bis-acrylamide.
Claim 5
Dependent Claim 25 words
A low-temperature hydrogenation catalyst comprising the composition of claim 2 having bonded thereto a metal selected from the group consisting of Pt, Pd, and Rh.

References Cited (Backward Citations)

US2484487A Cited
US3418295A Cited
US3544262A Cited
US3741272A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-01-05 1979-07-07 1980-01-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-01-05 1983-07-07 1984-01-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-01-05 1987-07-07 1988-01-06 $7700.00 Window Closed / Lapsed

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