Patent US4190459A successfully refreshed from Google Patents.
US4190459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of mineral fiber mats
Assignee: Bayer AG
•
Filing: 1978-06-21
•
Granted: 1980-02-26
•
Expires: 1998-06-21
Abstract
Abstract This disclosure teaches a method of forming mineral mates by using an emulsion of water glass and isocyanates as the binder. This binder composition may be readily dispersed with air and has superior adhesion to mineral fibers.
Inventors
- 👤 Rainer Welte
- 👤 Peter Markusch
- 👤 Dieter Dieterich
- 👤 Werner Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:55
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4209; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3893; C08G18/3895; D04H1/58; D04H1/587; D04H1/64
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
35 words
A process for the production of mineral fiber mats by bonding mineral fibers with binders, wherein an emulsion of water glass and isocyanate which has been prepared in a preceding mixer is used as binder.
Claim 2
Dependent Claim
35 words
A process for the production of mineral fiber mats by bonding mineral fibers with binders, wherein an emulsion of water glass and isocyanate which has been prepared in a preceding mixer is used as binder.
Claim 3
Dependent Claim
27 words
A process as claimed in claim 1, wherein an emulsion having an isocyanate to water glass ratio of between about 1:1 and 1:20, by weight, is used.
Claim 4
Dependent Claim
29 words
A process as claimed in claims 1 or 2, wherein an emulsion having an isocyanate to water glass ratio of between about 1:1.5 and 1:5, by weight, is used.
Claim 5
Dependent Claim
30 words
A process as claimed in claims 1 or 2, wherein water glass having an SiO 2 to Na 2 O molar ratio of between about 3:1 and 1.8:1 is used.
Claim 6
Dependent Claim
26 words
A process as claimed in claims 1 or 2, wherein water glass having a solids content of from about 40 to 55%, by weight, is used.
Claim 7
Dependent Claim
27 words
A process for forming mineral fiber mats comprising bonding the mineral fibers with a binder which is prepared by forming an emulsion of isocyanate and water glass.
Claim 8
Dependent Claim
27 words
A process for forming mineral fiber mats comprising bonding the mineral fibers with a binder which is prepared by forming an emulsion of isocyanate and water glass.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |