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US4028391A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of preparing organosilicon carboxylates

Assignee: Owens Corning
•
Filing: 1975-01-06
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Granted: 1977-06-07
•
Expires: 1995-01-06
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Abstract

Abstract Halogen and amine groups attached to silicon are replaced by organocarboxylate groups. The replacement is carried out with the reactants dissolved in pentane. Substantially quantitative yields are obtained, and the reaction can be preceded or followed by other reactions carried out in the pentane media. For example, trichlorosilane is reacted with an olefinic unsaturate containing halogen in a first stage reaction. Thereafter the product of the reaction is reacted with an organic acid so that the chlorines attached to the silicon are then replaced by the organocarboxylate groups in a second stage reaction. The remaining halogen is then replaced by amine in a third stage reaction, all in the pentane media. All this is accomplished without an HCl scavenger.

Inventors

  • 👤 Kevin M. Foley

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 12:37
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/40; C07F7/025; C07F7/18; C07F7/1896

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 28 words
A coupling agent for glass fibers comprising from 95 to 50 weight percent pentane and from 5 to 50 weight percent of an organosilane having the formula ##STR21##
Claim 2
Dependent Claim 28 words
A coupling agent for glass fibers comprising from 95 to 50 weight percent pentane and from 5 to 50 weight percent of an organosilane having the formula ##STR21##

References Cited (Backward Citations)

US2566347A Cited
US2537073A Cited
US3542831A Cited
US3542832A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-06-06 1980-12-06 1981-06-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-06-06 1984-12-06 1985-06-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-06-06 1988-12-06 1989-06-07 $7700.00 Window Closed / Lapsed

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