US4440833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper-laminated hard paper made of a fire resistant laminate
Assignee: Dynamit Nobel AG
•
Filing: 1982-10-28
•
Granted: 1984-04-03
•
Expires: 2002-10-28
Abstract
Abstract Increased elasticity of a laminate is obtained by adding 5-20% by weight of a blocked polyetherurethane component from a reaction product of polyethylene glycol, polypropylene glycol and p-nonylphenol with toluene-2,4-diisocyanate having the following composition: ______________________________________ polyethylene glycol 15-20% by weight polypropylene glycol 50-60% by weight toluene-2,4-diisocyanate 8-12% by weight nonylphenol 10-15% by weight ______________________________________ in the manufacture of a fire resistant laminate based on a cellulose-containing substrate material and an impregnating varnish made up of a phenol-resol with additives of plasticizers and flame retardants. A copper-laminated hard paper made of this phenolic resin laminate is distinguished by reduced punching resistance and stripping resistance.
Inventors
- 👤 Arnold Franz
- 👤 Siegfried Koepnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:50
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/12; B32B15/20; C; C08; C08K; C08K5/00; C08L; C08L61/00; C08L61/04; C08L61/06; D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/48; D21H17/54; D21H17/57; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/0373; B32B2260/00; B32B2260/02; B32B2260/028; B32B2260/04; B32B2260/046; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; C08L75/00; C08L75/04; C08L75/08; H05K2201/00; H05K2201/02; H05K2201/0275; H05K2201/0284; H05K2201/0293; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31591; Y10T428/31594; Y10T428/31605; Y10T428/31678; Y10T428/31703; Y10T428/31942; Y10T428/31949; Y10T428/31964
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
97 words
A copper-laminated hard paper comprising a fire resistant laminate formed of a cellulose-containing substrate material and an impregnating varnish of a phenol-resol with additives of plasticizers and flame retardants, said impregnating varnish having the following composition, by weight: ______________________________________
ammoniacal-condensed phenol-resol resin
35-50%
low-molecular phenolic resin
0-12%
diphenyl cresyl phosphate 20-35%
hexamethylenetetramine 1-6%
tetrabromobisphenol A 0-5%
pentabromodiphenyl ether 0-3%
and a blocked polyetherurethane component com-
5-20%
prised of a reaction product of polyethylene
glycol, polypropylene glycol and p-nonylphenol
with toluene-2,4-diisocyanate
having the following composition, by weight
polyethylene glycol 15-20%
polypropylene glycol 50-60%
toluene-2,4-diisocyanate 8-12%
nonylphenol 10-15%
______________________________________
Claim 2
Dependent Claim
97 words
A copper-laminated hard paper comprising a fire resistant laminate formed of a cellulose-containing substrate material and an impregnating varnish of a phenol-resol with additives of plasticizers and flame retardants, said impregnating varnish having the following composition, by weight: ______________________________________
ammoniacal-condensed phenol-resol resin
35-50%
low-molecular phenolic resin
0-12%
diphenyl cresyl phosphate 20-35%
hexamethylenetetramine 1-6%
tetrabromobisphenol A 0-5%
pentabromodiphenyl ether 0-3%
and a blocked polyetherurethane component com-
5-20%
prised of a reaction product of polyethylene
glycol, polypropylene glycol and p-nonylphenol
with toluene-2,4-diisocyanate
having the following composition, by weight
polyethylene glycol 15-20%
polypropylene glycol 50-60%
toluene-2,4-diisocyanate 8-12%
nonylphenol 10-15%
______________________________________
Claim 3
Dependent Claim
49 words
A copper-laminated hard paper according to claim 1, wherein the impregnating varnish contains 40-42% by weight ammoniacal-condensed phenol-resol resin, 8-12% by weight low-molecular phenolic resin, 28-32% by weight diphenyl cresyl phosphate, 1-4% by weight hexamethylenetetramine, 3-5% by weight tetrabromobisphenol A, and 10-15% by weight of the blocked polyetherurethane component.
Claim 4
Dependent Claim
71 words
An impregnating varnish for producing hard paper laminates which contains, by weight: ______________________________________
ammoniacal-condensed phenol-resol resin
35-50%
low-molecular phenolic resin
0-12%
diphenyl cresyl phosphate 20-35%
hexamethylenetetramine 1-6%
tetrabromobisphenol A 0-5%
pentabromodiphenyl ether 0-3%
and a blocked polyetherurethane component com-
5-20%
prised of a reaction product of polyethylene
glycol, polypropylene glycol and p-nonylphenol
with toluene-2,4-diisocyanate
having the following composition, by weight
polyethylene glycol 15-20%
polypropylene glycol 50-60%
toluene-2,4-diisocyanate 8-12%
nonylphenol 10-15%
______________________________________
Claim 5
Dependent Claim
71 words
An impregnating varnish for producing hard paper laminates which contains, by weight: ______________________________________
ammoniacal-condensed phenol-resol resin
35-50%
low-molecular phenolic resin
0-12%
diphenyl cresyl phosphate 20-35%
hexamethylenetetramine 1-6%
tetrabromobisphenol A 0-5%
pentabromodiphenyl ether 0-3%
and a blocked polyetherurethane component com-
5-20%
prised of a reaction product of polyethylene
glycol, polypropylene glycol and p-nonylphenol
with toluene-2,4-diisocyanate
having the following composition, by weight
polyethylene glycol 15-20%
polypropylene glycol 50-60%
toluene-2,4-diisocyanate 8-12%
nonylphenol 10-15%
______________________________________
Claim 6
Dependent Claim
46 words
An impregnating varnish according to claim 3, wherein said impregnating varnish contains 40-42% by weight ammoniacal-condensed phenol-resol resin, 8-12% by weight low-molecular phenolic resin, 28-32% by weight diphenyl cresyl phosphate, 1-4% by weight hexamethylenetramine, 3-5% by weight tetrabromobisphenol A, and 10-15% by weight blocked polyetherurethane component.
References Cited (Backward Citations)
US3713879A
Cited
US3962521A
Cited
US3821067A
Cited
US4074015A
Cited
US4256795A
Cited
US3933759A
Cited
US4400483A
Cited
US4260514A
Cited
US4403086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |