§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US3854986A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of making mineral fibers of high corrosion resistance and fibers produced

Assignee: Czech Academy of Sciences
•
Filing: 1969-09-26
•
Granted: 1974-12-17
•
Expires: 1989-09-26
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Mineral fibers of high corrosion resistance are made by employing a base material or composition containing a plurality of oxides of metals from at least one of the groups II, III, IV and VIII of the Periodic Table; adjusting the base raw material or composition so as to furthermore include TiO2 in an amount of at least 1.5 percent by weight of the total composition and at least one oxide of a metal from the group II or IVa in an amount of at least 2.5 percent by weight of the total composition; melting the said raw material or composition; spinning the molten mass into fibers and then coating the thus-formed fibers with a polysiloxane resin. The fibers are particularly suited for incorporation in a cement medium where they may totally or partially replace asbestos fibers previously used for this purpose.

Inventors

  • 👤 V Chvalovsky
  • 👤 L Mach
  • 👤 H Machova

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 17:38
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/1025; C03C25/103; C03C13/00; C03C13/001; C03C13/002; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 20 words
GLASS FIBERS COATED WITH A POLYSILOXANE RESIN WHEREIN SAID GLASS FIBERS ARE FORMED OF A GLASS HAVING THE FOLLOWING COMPOSITION;
Claim 2
Dependent Claim 20 words
GLASS FIBERS COATED WITH A POLYSILOXANE RESIN WHEREIN SAID GLASS FIBERS ARE FORMED OF A GLASS HAVING THE FOLLOWING COMPOSITION;
Claim 3
Dependent Claim 14 words
Coated glass fibers according to claim 1 wherein said resin is a methylsiloxane polymer.
Claim 4
Dependent Claim 16 words
Coated glass fibers according to claim 2 wherein said methylsiloxane polymer resin has the unit formula
Claim 5
Dependent Claim 20 words
Coated glass fibers according to claim 1 wherein said glass fibers are formed of a glass having the following composition
Claim 6
Dependent Claim 20 words
Coated glass fibers according to claim 1 wherein said glass fibers are formed of a glass having the following composition:
Claim 7
Dependent Claim 18 words
Process of making glass fibers coated with a polysiloxane resin comprising melting a glass having the following composition:
Claim 8
Dependent Claim 18 words
Process of making glass fibers coated with a polysiloxane resin comprising melting a glass having the following composition:
Claim 9
Dependent Claim 13 words
The process of claim 6, wherein the polysiloxane resin is a methylsiloxane polymer.
Claim 10
Dependent Claim 13 words
The process of claim 7, wherein the siloxane resin has the unit formula
Claim 11
Dependent Claim 14 words
The process of claim 8, wherein the sum of x and y equals 1.
Claim 12
Dependent Claim 14 words
The process of claim 6, wherein the base composition consists of basalt or dolomite.
Claim 13
Dependent Claim 16 words
The process of claim 6, wherein the basic composition consists of a clay or shale material.
Claim 14
Dependent Claim 20 words
The process of claim 6, wherein the base material consists of an iron slag resulting from a blast furnace operation.

References Cited (Backward Citations)

US2970122A Cited
US3095311A Cited
US3523803A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-12-16 1978-06-17 1978-12-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-12-16 1982-06-17 1982-12-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-12-16 1986-06-17 1986-12-17 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag