§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US4172042A Expired / Lapsed US ⏱️ 0.0 years remaining

Heat-insulating material

Assignee: Individual
•
Filing: 1977-12-20
•
Granted: 1979-10-23
•
Expires: 1997-12-20
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A heat-insulating material comprising from 85 to 98 parts by weight of mineral wool and from 15 to 2 parts by weight of a binder applied onto the wool, which is a modified resol phenol-formaldehyde resin on the basis of phenol, formaldehyde, sodium hydroxide, a water proofing additive which is an individual alkylresorcinol with a number of side chain carbons of 2 to 8 or a mixture of alkylresorcinols, as well as urea, or dicyandiamide, or melamine, the ratio between said components being as follows (parts by weight): ______________________________________ phenol 1 formaldehyde 0.74-0.96 sodium hydroxide 0.03-0.05 alkylresorcinol with a number of side chain carbons of 2 to 8, or a mixture of alkylresorcinols 0.075-0.45 urea, or dicyandimaide, or melamine 0.15-0.35 ______________________________________ The proposed heat-insulating material features improved adhesion properties, has a reduced water absorption and an increased moisture resistance.

Inventors

  • 👤 Karl R. Kiisler
  • 👤 Tiit K. Kaps
  • 👤 Peep G. Kristyanson
  • 👤 Jury F. Vabaoya
  • 👤 Tynu A. Kumari
  • 👤 Anne A. Tynnisson
  • 👤 Vladimir A. Zdon
  • 👤 Eduard M. Dolgy
  • 👤 Ivar K. Roox
  • 👤 Gurgen K. Avakian, deceased

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 13:48
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02; C04B26/10; C04B26/12; C08; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08L; C08L61/00; C08L61/34; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 143 words
A heat-insulating composition consisting essentially of from 85 to 98 parts by weight of mineral wool and from 15 to 2 parts by weight of a binder applied onto said wool, the binder being a modified resol phenol-formaldehyde resin based on phenol, formaldehyde, sodium hydroxide, a waterproofing additive selected from the group consisting of an individual alkylresorcinol with 2 to 8 side chain carbons, and mixtures thereof, and nitrogenated compounds selected from the group consisting of urea, dicyandiamide, and melamine, the ratio between said phenol, formaldehyde, sodium hydroxide, alkylresorcinols, and nitrogenated compounds being as follows in parts by weight: ______________________________________ phenol 1 formaldehyde 0.74-0.96 sodium hydroxide 0.03-0.05 Waterproofing additive select- ed from the group consisting of individual alkylresorcinol with 2 to 8 side chain carbons, and mixtures thereof 0.075-0.45 nitrogenated compound selected from the group consisting of urea, dicyandiamide, and melamine 0.15-0.35 ______________________________________
Claim 2
Dependent Claim 143 words
A heat-insulating composition consisting essentially of from 85 to 98 parts by weight of mineral wool and from 15 to 2 parts by weight of a binder applied onto said wool, the binder being a modified resol phenol-formaldehyde resin based on phenol, formaldehyde, sodium hydroxide, a waterproofing additive selected from the group consisting of an individual alkylresorcinol with 2 to 8 side chain carbons, and mixtures thereof, and nitrogenated compounds selected from the group consisting of urea, dicyandiamide, and melamine, the ratio between said phenol, formaldehyde, sodium hydroxide, alkylresorcinols, and nitrogenated compounds being as follows in parts by weight: ______________________________________ phenol 1 formaldehyde 0.74-0.96 sodium hydroxide 0.03-0.05 Waterproofing additive select- ed from the group consisting of individual alkylresorcinol with 2 to 8 side chain carbons, and mixtures thereof 0.075-0.45 nitrogenated compound selected from the group consisting of urea, dicyandiamide, and melamine 0.15-0.35 ______________________________________
Claim 3
Dependent Claim 26 words
The composition of claim 1, wherein said waterproofing additive is selected from the group consisting of resorcinol, 5-methylresorcinol, 5-ethylresorcinol, 4,5-dimethylresorcinol, 2,5-dimethylresorcinol, and higher homologs of alkylresorcinol.
Claim 4
Dependent Claim 11 words
The composition of claim 2 wherein said waterproofing additive is 5-ethylresorcinol.
Claim 5
Dependent Claim 11 words
The composition of claim 1 wherein said waterproofing additive is hexylresorcinol.
Claim 6
Dependent Claim 11 words
The composition of claim 1 wherein said nitrogenated compound is urea.
Claim 7
Dependent Claim 11 words
The composition of claim 1 wherein said nitrogenated compound is melamine.
Claim 8
Dependent Claim 11 words
The composition of claim 1 wherein said nitrogenated compound is dicyandiamide.

References Cited (Backward Citations)

US2633433A Cited
US3408316A Cited
FR1467645A Cited
GB1273152A Cited
US3770466A Cited
SU451676A1 Cited
US3963652A Cited
DE2604756A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-10-22 1983-04-23 1983-10-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-10-22 1987-04-23 1987-10-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-10-22 1991-04-23 1991-10-23 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag