CA1113673A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Panels
Assignee: Stratiforme SA
•
Filing: 1979-01-08
•
Granted: 1981-12-08
•
Expires: 1999-01-08
Abstract
Abstract ABSTRACT OF THE DISCLOSURE The invention relates to a panel with a core of poly-condensable resin and a method of fabricating same. The panel comprises a phenolic resin covering fillers. It is characterized in that the phenolic resin is an expandable resin with a closed cell structure and in that it includes a divided hydrophilic material. The panel is produced by only one moulding operation and comprises an expanded phenolic resin core and facings also of re-inforced phenolic resin. The panels obtained have good mechanical resistance and good resistance to fire.
Inventors
- 👤 Claude Savey
- 👤 Florent Laurent
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-08 23:09
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/35; B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/1209; C08J9/0066; C08J9/04; C08J9/12; C08J9/14; C08J9/143; C08J9/147; C08J9/34; B29C44/14; C08J2361/00; C08J2361/04; C08J2361/06; Y; Y10; Y10S; Y10S264/00; Y10S264/02; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249976; Y10T428/249994
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
145 words
A process of making a panel which comprises: forming a fluid mixture of phenolic resin, a hardening agent, a surface active agent, a finely divided hydrophilic mat-erial and a volatile liquid pore forming agent having a boiling point above ambient temperature during mixing and below the poly-condensation temperature of said mixture, uniformly mixing said mixture with solid fillers in particulate form, partially filling a mould with said fluid mixture with said fillers therein and closing said mould, progressively raising the temperature of said mixture to a first temperature in the vicinity of the boiling point of said pore forming agent and maintaining said mixture at said temperature to produce maximum expansion of said mixture to fill said mould, and thereafter progressively raising the temperature of said mixture to a second temperature equal to the polycondensation temperature of said mixture to effect polycondensation of said mixture.
Claim 2
Dependent Claim
145 words
A process of making a panel which comprises: forming a fluid mixture of phenolic resin, a hardening agent, a surface active agent, a finely divided hydrophilic mat-erial and a volatile liquid pore forming agent having a boiling point above ambient temperature during mixing and below the poly-condensation temperature of said mixture, uniformly mixing said mixture with solid fillers in particulate form, partially filling a mould with said fluid mixture with said fillers therein and closing said mould, progressively raising the temperature of said mixture to a first temperature in the vicinity of the boiling point of said pore forming agent and maintaining said mixture at said temperature to produce maximum expansion of said mixture to fill said mould, and thereafter progressively raising the temperature of said mixture to a second temperature equal to the polycondensation temperature of said mixture to effect polycondensation of said mixture.
Claim 3
Dependent Claim
21 words
A process according to claim 1, in which said mould is evacuated during heating before and during polycondensation of said mixture.
Claim 4
Dependent Claim
34 words
A process according to claim 1, in which the walls of said mould are covered with a layer of fibrous reinforcing mat-erial prior to the introduction of said fillers and mixture into said mould.
Claim 5
Dependent Claim
22 words
A process according to claim 1, in which said pore forming agent is a trichlorotrifluorethane having a boiling point of about 47°C.
Claim 6
Dependent Claim
17 words
A process according to claim 4, in which said mix-ture has a polycondensation temperature of about 60°C.
Claim 7
Dependent Claim
19 words
A process according to claim 4, in which first temp-erature to which said mixture is raised is about 40°C.
Claim 8
Dependent Claim
20 words
A process according to claim 1, in which said fillers comprise small balls of glass, expanded polystyrene or expanded clay.
Claim 9
Dependent Claim
21 words
A process according to claim 1, in which said hydro-philic material is selected from the group consisting of plaster and gypsum.
Claim 10
Dependent Claim
31 words
A process according to claim 1, in which the propor-tion of said hydrophilic material is between 30% to 60% by weight in relation to the weight of resin in the material.
Claim 11
Dependent Claim
39 words
A process according to claim 1, in which the comp-osition of the mixture exists in a gel state before and during ex-pansion in order to have such viscosity that a maximum quantity of the mixture gathers around the fillers.
Claim 12
Dependent Claim
26 words
A panel having a surface of impermeable phenolic material and including fillers embedded in a closed cell expanded phenolic resin and including finely divided hydrophilic material.
Claim 13
Dependent Claim
26 words
A panel having a surface of impermeable phenolic material and including fillers embedded in a closed cell expanded phenolic resin and including finely divided hydrophilic material.
Claim 14
Dependent Claim
29 words
A panel according to claim 11, wherein the fillers are small balls or microspheres of a material selected from the group consisting of glass, expanded polystyrene or expanded clay.
Claim 15
Dependent Claim
22 words
A panel according to claims 11 or 12 wherein the hydrophillic material is selected from the group consisting of plaster and gypsum.
Claim 16
Dependent Claim
30 words
A panel according to claim 11, wherein the propor-tion of the hydrophilic material is between 30% to 60% by weight in relation to the weight of resin in the material.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.