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US3801385A Expired / Lapsed US ⏱️ 0.0 years remaining

Processing aids for hydroxy-terminated polybutadiene propellant(u)

Assignee: Aerojet Rocketdyne Inc
•
Filing: 1970-08-19
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Granted: 1974-04-02
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Expires: 1990-08-19
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Abstract

Abstract This patent describes a novel solid propellant formulation containing a hydroxy-containing polybutadiene polymer, a solid oxidizing agent and having a high solids content; the improvement wherein the propellant has an increased pot life and reduced viscosity by the incorporation therein of a small effective amount of a compound selected from the group consisting of those having the generic formula: WHEREIN R is hydrogen, omega -hydroxy alkyl, phenyl, cyclohexyl, R'' is an omega -hydroxy alkyl or hydroxyphenyl, R'''' is alkyl, and n is an integer from 1 to about 20; or WHEREIN R'''''' is an alkyl or aryl group and m is an integer from 1 to about 20. This invention also includes the method of forming said formulation, and casting and curing the same to form a solid propellant.

Inventors

  • 👤 E Mastrolia
  • 👤 H Michigian

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 18:51
CPC Classifications
C; C06; C06B; C06B23/00; C06B23/009

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 44 words
A novel solid propellant formulation comprising a hydroxy-containing polybutadiene, a solid oxidizing agent and having a high solids content; the improvement wherein the propellant has an increased pot life and reduced viscosity by the incorporation therein of a small effective amount of dilauryl thiodipropionate.
Claim 2
Dependent Claim 44 words
A novel solid propellant formulation comprising a hydroxy-containing polybutadiene, a solid oxidizing agent and having a high solids content; the improvement wherein the propellant has an increased pot life and reduced viscosity by the incorporation thErein of a small effective amount of distyryl thiodipropionate.
Claim 3
Dependent Claim 59 words
A novel solid propellant formulation comprising a hydroxy-containing polybutadiene, a solid oxidizing agent and having a high solids content; the improvement wherein the propellant has an increased pot life and reduced viscosity by the incorporation therein of a small effective amount of a dithiodipropionate selected from the group consisting of ditridecyl thiodipropionate, di-2-ethylhexyl thiodipropionate, dilauryl thiodipropionate, and distyryl thiodiopropionate.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-04-01 1977-10-01 1978-04-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-04-01 1981-10-01 1982-04-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-04-01 1985-10-01 1986-04-02 $7700.00 Window Closed / Lapsed

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