EP0019947A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for the manufacture of objects from thermosetting resin
Assignee: Stamicarbon BV
•
Filing: 1980-04-22
•
Granted: —
•
Expires: 2000-04-22
Abstract
Abstract A process for applying a cover layer based on thermosetting resin to objects of thermosetting resin. The process is characterized in that a shape imparting support face is heated to a temperature of 90-200° C and then is provided with a cover layer of a thermosetting resin with catalyst. After hardening the cover layer and cooling below 90° C a basic layer thermosetting resin is applied and hardened.
Inventors
- 👤 René Leopold Eduard Van Gasse
- 👤 Andreas Nicolaas Jacobus Verwer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 20:44
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0025; B29C37/0028; B29C37/0032; B29C41/00; B29C41/006; B29C70/00; B29C70/003; B29C70/0035; B29C2037/0035; B29C2037/0039; B29C41/02; B29C41/08; B29K; B29K2067/00; B29K2067/06; B29K2105/00; B29K2105/0058; B29K2105/06; B29K2105/25; B29K2105/251; B29K2309/00; B29K2309/08; Y; Y10; Y10S; Y10S264/00; Y10S264/42; Y10S264/57
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
123 words
Process for the manufacture of objects from a thermosetting resin, using a shape-imparting support face, on which at least a layer of thermosetting resin, hereinafter to be called the basic layer, is applied to the support face, this process being characterized in that the support face is heated to a temperature of 90-200 0 C and is provided with a cover layer by applying to it solid or liquid fine particles of a thermosetting resin with catalyst, and whether or not containing a pigment, and making this resin melt in the case solid particles are applied, polymerize and harden after which the basic layer is applied to the cover layer at a temperature of the support face lower than 90 °C, and hardened.
Claim 2
Dependent Claim
123 words
Process for the manufacture of objects from a thermosetting resin, using a shape-imparting support face, on which at least a layer of thermosetting resin, hereinafter to be called the basic layer, is applied to the support face, this process being characterized in that the support face is heated to a temperature of 90-200 0 C and is provided with a cover layer by applying to it solid or liquid fine particles of a thermosetting resin with catalyst, and whether or not containing a pigment, and making this resin melt in the case solid particles are applied, polymerize and harden after which the basic layer is applied to the cover layer at a temperature of the support face lower than 90 °C, and hardened.
Claim 3
Dependent Claim
62 words
Process according to claim 1, characterized in that the resin particles consist to 50-92 % weight of unsaturated polyester resin, to 5-30 % by weight of a prepolymer from a dialkylester of an aromatic dicarboxylic acid, to 3-20 % by weight of highboiling, copolymerizable, cross-linking monomer, and to 0.1-5 % weight of catalyst referred to the total weight of the polymerisable compounds.
Claim 4
Dependent Claim
23 words
Process according to claims 1 and 2, characterized in that the mean size of the solid resin particles is 0.01 to 0.15 mm.
Claim 5
Dependent Claim
21 words
Process according to claims 1-3, characterized in that the resin particles are applied to the heated support face by electrostatic spraying.
Claim 6
Dependent Claim
19 words
Process according to claims 1-4, characterized in that the support face is heated to a temperature of 110-175 °C.
Claim 7
Dependent Claim
28 words
Process according to claims 1-5, characterized in that the temperature of the support face is brought down to below 80 0 C before the basic layer is applied.
Claim 8
Dependent Claim
22 words
Process according to claims 1-6, characterized in that the basic layer consists of an unsaturated polyester with styrene as the cross-linking monomer.
Claim 9
Dependent Claim
17 words
Process according to claims 1-7, characterized in that the basic layer is made to contain glass fibres.
Claim 10
Dependent Claim
26 words
Process according to claim 8, characterized in that the basic layer is formed by successively applying layers of resin and glass fibres to the cover layer.
Claim 11
Dependent Claim
10 words
Process as substantially described in the specification and the examples.
Claim 12
Dependent Claim
10 words
Process as substantially described in the specification and the examples.
Claim 13
Dependent Claim
12 words
Object manufactured by any one of the processes of the claims 1-10.
References Cited (Backward Citations)
DE2625728A1
Cited
EP0001865A1
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.