Glass fiber forming composition, glass fibers obtained from the

Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

501 38, 501 70, 501 72, G03C 1302

Patent

active

054078725

ABSTRACT:
A glass fiber forming composition exhibits a remarkably high dielectric constant .epsilon..sub..GAMMA. as well as superior chemical resistance, yet it is readily spun into glass fibers. The composition is characterized to show a devitrification temperature which is lower than a spinning temperature at which the glass composition exhibits a viscosity of 10.sup.2.5 poise, so as to be readily spun into corresponding glass fibers. The composition consists essentially of 40 to 65 mol % of SiO.sub.2 ; 20 to 45 mol % of at least one component selected from the group consisting of MgO, CaO, SrO and BaO; 5 to 25 mol % of at least one component selected from the group consisting of TiO.sub.2 and ZrO.sub.2 ; and 0.5 to 15 mol % of NbO.sub.5/2 as calculated from an incorporated amount of Nb.sub.2 O.sub.5. Alternately, the composition consist essentially of 40 to 65 mol % of SiO.sub.2 ; 20 to 45 mol % of at least one component selected from the group consisting of CaO, SrO and BaO; 5 to 25 mol % of at least one component selected from the group consisting of TiO.sub.2 and ZrO.sub.2 ; 0.5 to 15 mol % of NbO.sub.5/2 as calculated from an incorporated amount of Nb.sub.2 O.sub.5 ; and 0.5 to 15 mol % of AlO.sub.3/2 as calculated from an incorporated amount of Al.sub.2 O.sub.3. The composition is also characterized to incorporate at least 85 mol % of a total amount of the oxides and have a dielectric constant [.epsilon..sub..GAMMA. ] of 9 or more at 1 MHz and 25.degree. C.

REFERENCES:
patent: 3060041 (1962-10-01), Loewenstein
patent: 4055435 (1977-10-01), Sagara
patent: 4179300 (1979-12-01), Sagara
patent: 4390638 (1983-06-01), Mennemann
patent: 4400473 (1983-08-01), Mennemann
patent: 4830989 (1989-05-01), Trivedi
Patent Abstracts of Japan, vol. 13, No. 461 (C-645) 18 Oct. 1989 & JP-A-01 179 741, Jul. 17, 1989.
World Patents Index Latest, Week 03, Derwent Publications Ltd., AN 90-096954 & JP-A-2 050 834, Feb. 20, 1990.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Glass fiber forming composition, glass fibers obtained from the does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Glass fiber forming composition, glass fibers obtained from the , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Glass fiber forming composition, glass fibers obtained from the will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-66958

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.