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US4313764A Expired / Lapsed US ⏱️ 0.0 years remaining

Isocyanate polyoxyalkylenes

Assignee: Rhone Poulenc Surfactants and Specialties LP
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Filing: 1980-07-31
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Granted: 1982-02-02
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Expires: 2000-07-31
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Abstract

Abstract The isocyanate polyoxyalkylenes having the formula: OCN--(AO).sub.x --(BO).sub.y --(CO).sub.z --DE I. wherein E is --NCO or an amino group; A, C and D represent lower alkylene of 2 to 4 carbon atoms; B is alkylene of 2 to 8 carbon atoms; y and z are each integers having a value of 0 to 50 and x is an integer having a value of from 2 to 50, and intermixtures of said polyoxyalkylenes. The above compounds display a wide variety of uses, namely for the control of fungi and bacteria or for the prevention of such infestation. They are also useful dielectric constant depressors for polymeric substances, e.g. polyvinylchloride, polyvinylidene halides, etc., extenders for solids in latices and anti-static agents.

Inventors

  • 👤 David J. Tracy
  • 👤 Lindley S. Wood
  • 👤 Paritosh M. Chakrabarti

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 16:04
CPC Classifications
C; C07; C07C; C07C265/00; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/321; C08G65/325; C08G65/3255; C08K; C08K5/00; C08K5/16; C08K5/29

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 103 words
The process of increasing the hydrophilicity of an hydrophobic polymeric material by incorporating in said material between about 0.01 and about 10 weight percent of an isocyanate of polyoxyalkylene product having the formula: W--(AO).sub.x --(BO).sub.y --(CO).sub.z --DE wherein E is amino or --W; W is an isocyanate radical; A, C and D represent lower alkylene of 2 to 4 carbon atoms; B is alkylene of 2 to 8 carbon atoms; y and z are each integers having a value of from 0 to 50; x is an integer having a value of from 2 to 50; and intermixtures of said isocyanate polyoxyalkylene compounds.
Claim 2
Dependent Claim 103 words
The process of increasing the hydrophilicity of an hydrophobic polymeric material by incorporating in said material between about 0.01 and about 10 weight percent of an isocyanate of polyoxyalkylene product having the formula: W--(AO).sub.x --(BO).sub.y --(CO).sub.z --DE wherein E is amino or --W; W is an isocyanate radical; A, C and D represent lower alkylene of 2 to 4 carbon atoms; B is alkylene of 2 to 8 carbon atoms; y and z are each integers having a value of from 0 to 50; x is an integer having a value of from 2 to 50; and intermixtures of said isocyanate polyoxyalkylene compounds.

References Cited (Backward Citations)

US3267122A Cited
US3370077A Cited
US3631199A Cited
US4089649A Cited
US4148819A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1985-02-01 1985-08-03 1986-02-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1989-02-01 1989-08-03 1990-02-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1993-02-01 1993-08-03 1994-02-02 $7700.00 Window Closed / Lapsed

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