US4904522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of fiberglass mats
Assignee: Bayer Corp
•
Filing: 1988-07-26
•
Granted: 1990-02-27
•
Expires: 2008-07-26
Abstract
Abstract The present invention is directed to a process for the production of fiberglass mats by binding fiberglass with binders based on aqueous polyisocyanate emulsions which do not contain waterglass. The present invention is also directed to the fiberglass mats produced by this process.
Inventors
- 👤 Peter H. Markusch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:30
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/703; C08G18/705; C08G18/706; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/25; D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31598; Y10T428/31601; Y10T442/00; Y10T442/20; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
27 words
A process for the production of a fiberglass mat which comprises treating fiberglass with a binder based on an aqueous polyisocyanate emulsion in the absence of waterglass.
Claim 2
Dependent Claim
27 words
A process for the production of a fiberglass mat which comprises treating fiberglass with a binder based on an aqueous polyisocyanate emulsion in the absence of waterglass.
Claim 3
Dependent Claim
29 words
The process of claim 1 wherein said polyisocyanate dispersion is used in an amount of 1 to 20 wt. % of polyisocyanate solids, based on the weight of fiberglass.
Claim 4
Dependent Claim
23 words
The process of claim 1 wherein said polyisocyanate is rendered hydrophilic by reaction with a compound containing an ionic or potential ionic group.
Claim 5
Dependent Claim
23 words
The process of claim 2 wherein said polyisocyanate is rendered hydrophilic by reaction with a compound containing an ionic or potential ionic group.
Claim 6
Dependent Claim
25 words
The process of claim 1 wherein said polyisocyanate dispersion is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group.
Claim 7
Dependent Claim
25 words
The process of claim 2 wherein said polyisocyanate dispersion is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group.
Claim 8
Dependent Claim
46 words
A process for the production of fiberglass mats which comprises treating fiberglass with a binder which is based on an aromatic polyisocyanate and which does not contain waterglass in an amount of 1 to 20 wt. % of polyisocyanate solids, based on the weight of fiberglass.
Claim 9
Dependent Claim
46 words
A process for the production of fiberglass mats which comprises treating fiberglass with a binder which is based on an aromatic polyisocyanate and which does not contain waterglass in an amount of 1 to 20 wt. % of polyisocyanate solids, based on the weight of fiberglass.
Claim 10
Dependent Claim
25 words
The process of claim 7 wherein said polyisocyanate dispersion is rendered hydrophilic by treatment with a compound containing a lateral or terminal nonionic hydrophilic group.
Claim 11
Dependent Claim
27 words
A fiberglass mat which is prepared by a process which comprises treating fiberglass with a binder based on an aqueous polyisocyanate emulsion in the absence of waterglass.
Claim 12
Dependent Claim
27 words
A fiberglass mat which is prepared by a process which comprises treating fiberglass with a binder based on an aqueous polyisocyanate emulsion in the absence of waterglass.
Claim 13
Dependent Claim
30 words
The fiberglass mat of claim 9 wherein said polyisocyanate dispersion is used in an amount of 1 to 20 wt. % of polyisocyanate solids, based on the weight of fiberglass.
Claim 14
Dependent Claim
24 words
The fiberglass mat of claim 9 wherein said polyisocyanate is rendered hydrophilic by reaction with a compound containing an ionic or potential ionic group.
Claim 15
Dependent Claim
24 words
The fiberglass mat of claim 10 wherein said polyisocyanate is rendered hydrophilic by reaction with a compound containing an ionic or potential ionic group.
Claim 16
Dependent Claim
26 words
The fiberglass mat of claim 9 wherein said polyisocyanate dispersion is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group.
Claim 17
Dependent Claim
26 words
The fiberglass mat of claim 10 wherein said polyisocyanate dispersion is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group.
Claim 18
Dependent Claim
47 words
A fiberglass mat which is prepared by a process which comprises treating fiberglass with a binder which is based on an aromatic polyisocyanate and which does not contain waterglass in an amount of 1 to 20 wt. % of polyisocyanate solids, based on the weight of fiberglass.
Claim 19
Dependent Claim
47 words
A fiberglass mat which is prepared by a process which comprises treating fiberglass with a binder which is based on an aromatic polyisocyanate and which does not contain waterglass in an amount of 1 to 20 wt. % of polyisocyanate solids, based on the weight of fiberglass.
Claim 20
Dependent Claim
26 words
The fiberglass mat of claim 15 wherein said polyisocyanate dispersion is rendered hydrophilic by treatment with a compound containing a lateral or terminal nonionic hydrophilic group.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-26 | 1993-08-28 | 1994-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-26 | 1997-08-28 | 1998-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-26 | 2001-08-28 | 2002-02-27 | $7700.00 | Window Closed / Lapsed |