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US4141877A Expired / Lapsed US ⏱️ 0.0 years remaining

Processing organic polymers with hydrated glasses

Assignee: Corning Glass Works
•
Filing: 1977-09-06
•
Granted: 1979-02-27
•
Expires: 1997-09-06
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Abstract

Abstract This invention relates to the coprocessing of hydrated glass with organic polymers to form integral bodies which can be stronger, tougher, and more durable than the original hydrated glass and stiffer than the original plastic material. The process is amenable to any hydrated glass so long as the processing temperature of the hydrated glass is below the temperature at which decomposition of the organic polymer takes place. Chemical bonding between the hydrated glass and a thermosetting organic polymer is achieved through the use of silane coupling agents. Such are not necessary with thermoplastic polymers. The invention is applicable with both thermosetting and thermoplastic polymers which are resistant to alkali environments.

Inventors

  • 👤 Manfred Luttinger
  • 👤 Anthony R. Olszewski
  • 👤 Donald R. Parnell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 18:15
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/40

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 50 words
A uniformly coherent, integral body composed of hydrated alkali metal silicate glass having a water content between about 1-20% by weight and an organic polymer resistant to a hot, aqueous, alkaline environment, said body exhibiting no grain boundaries discernible by the unaided eye and essentially no signs of polymer degradation.
Claim 2
Dependent Claim 50 words
A uniformly coherent, integral body composed of hydrated alkali metal silicate glass having a water content between about 1-20% by weight and an organic polymer resistant to a hot, aqueous, alkaline environment, said body exhibiting no grain boundaries discernible by the unaided eye and essentially no signs of polymer degradation.
Claim 3
Dependent Claim 52 words
An integral body according to claim 1 wherein said alkali metal silicate glass consists essentially, in mole percent on the oxide basis, of about 3-25% Na 2 O and/or K 2 O and 50-95% SiO 2 , the sum of those components constituting at least 55 mole percent of the total composition.
Claim 4
Dependent Claim 19 words
An integral body according to claim 1 wherein said H 2 O content ranges between about 3-15% by weight.
Claim 5
Dependent Claim 15 words
An integral body according to claim 1 wherein said organic polymer is a thermosetting resin.
Claim 6
Dependent Claim 16 words
An integral body according to claim 4 also containing a curing agent and a coupling agent.
Claim 7
Dependent Claim 15 words
An integral body according to claim 1 wherein said organic polymer is a thermoplastic polymer.
Claim 8
Dependent Claim 12 words
An integral body according to claim 6 also containing a coupling agent.
Claim 9
Dependent Claim 17 words
An integral body according to claim 1 wherein said hydrated glass constitutes about 25-96 parts by volume.

References Cited (Backward Citations)

US3510444A Cited
US3498802A Cited
US3763070A Cited
US3769250A Cited
US3840380A Cited
US3853577A Cited
US3912481A Cited
US3991008A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-02-26 1982-08-28 1983-02-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-02-26 1986-08-28 1987-02-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-02-26 1990-08-28 1991-02-27 $7700.00 Window Closed / Lapsed

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