EP0441416A1
Expired / Lapsed
EP
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Resin composition containing low-molecular weight compounds which form a polyester urethane hybrid network
Assignee: DSM BV
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Filing: 1991-01-04
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Granted: —
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Expires: 2011-01-04
Abstract
Abstract The invention relates to a resin composition containing low-molecular compounds which form a polyester urethane hybrid network. The resin composition contains a first component consisting of a condensation product of at least one diol and at least one unsaturated dicarboxylic acid material, a second component containing an ethylenically unsaturated monomer capable of copolymerizing with the first component, and a third component consisting of a polyisocyanate. The first component substantially consists of a diester compound of 2 diol molecules and 1 molecule of a dicarboxylic acid material, which dicarboxylic acid material consists of at least 75% of α-, β-unsaturated dicarboxylic acid and in that all compounds have an ethylenical unsaturation of 1 at most.
Inventors
- 👤 Ronald Leonardus Verleg
- 👤 Adrianus Johannes De Koning
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 08:48
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/68; C08G18/683; C08G2120/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
110 words
Resin composition containing low-molecular compounds which form a polyester urethane hybrid network, which resin composition contains a first component consisting of a condensation product of at least one diol and at least one unsaturated dicarboxylic acid material, a second component containing an ethylenically unsaturated monomer capable of copolymerizing with the first component, and a third component constituting a polyisocyanate, characterized in that the first component substantially consists of a diester compound of 2 diol molecules and 1 molecule of a dicarboxylic acid material, which dicarboxylic acid material consists of at least 75% of α-, β-unsaturated dicarboxylic acid and in that all compounds have an ethylenical unsaturation of 1 at most.
Claim 2
Dependent Claim
34 words
Resin composition according to claim 1, characterized in that the diol molecules and the molecules of the dicarboxylic acid-like materials are present in the first component in a ratio higher than 1.75 : 1.
Claim 3
Dependent Claim
37 words
Resin composition according to claim 1, characterized in that the diol molecules and the molecules of the dicarboxylic acid materials are present in the first component in a ratio equal to or higher than 2 : 1.
Claim 4
Dependent Claim
16 words
Resin composition according to claim 1, characterized in that the diol is an alkoxylated bisphenol A.
Claim 5
Dependent Claim
19 words
Resin composition according to claim 1, characterized in that the dicarboxylic acid material is maleic anhydride or fumaric acid.
Claim 6
Dependent Claim
16 words
Resin composition according to claim 1, characterized in that the polyisocyanate is a carbodiimide-modified diphenylmethane 4,4′-diisocyanate.
Claim 7
Dependent Claim
48 words
Resin composition according to claim 1, characterized in that the second component is selected from the group consisting of styrene, α-methylstyrene, p-methylstyrene, vinyl toluene, acrylic acid esters of alcohols with 1 to 12 carbon atoms and methacrylic acid (hydroxy) esters of alcohols with 1 to 12 carbon atoms.
Claim 8
Dependent Claim
14 words
Resin composition according to claim 1, characterized in that the second component is styrene.
Claim 9
Dependent Claim
37 words
Resin composition according to claim 1, characterized in that, with a 65% solids content of the first component calculated on the first and second components, the resin composition has a viscosity lower than 500 mPas at 23°C.
Claim 10
Dependent Claim
42 words
A process for forming molded articles which comprises injecting into a mold the resin composition of claim 1, allowing the injected resin composition to polymerize and cure in the mold and form said article, and removing the molded article from the mold.
Claim 11
Dependent Claim
41 words
A process according to claim 10 wherein an additional quantity of said resin composition is injected into the mold after initiation of polymerization to compensate for shrinkage of the molded article caused by radical polymerization between the first and second components.
Claim 12
Dependent Claim
26 words
A process according to claim 10 wherein radical polymerization between the first and second components components is carried out prior to affecting curing with the polyisocyanate.
Claim 13
Dependent Claim
11 words
Article obtained by curing a resin composition according to claims 10.
Claim 14
Dependent Claim
114 words
A two-part system containing at least a first, second and third component, wherein the first part of said system comprises a first component consisting of a condensation product of at least one diol and at least one unsaturated dicarboxylic acid, and a second component consisting of an unsaturated monomer capable of polymerizing with the first component, and the second part comprises a third component containing a polyisocyanate, wherein said second part optionally comprises the rest of the second component, wherein the first component substantially consists of a diester compound of 2 diol molecules and 1 molecule of a dicarboxylic acid material, said dicarboxylic acid material consisting of at least 75% α-, β-unsaturated dicarboxylic acid.
Claim 15
Dependent Claim
11 words
A molded article formed with the two-part system of claim 14.
References Cited (Backward Citations)
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