EP0318325A2
Expired / Lapsed
EP
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Resin composition for artificial marble
Assignee: Nippon Shokubai Co Ltd
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Filing: 1988-11-25
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Granted: —
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Expires: 2008-11-25
Abstract
Abstract This invention is directed to a setting resin composition for making artificial marble, comprising (A) a radically polymerisable monomer, (B) a thermoplastic resin soluble or dispersible in the monomer (A), (C) an epoxy resin, (D) at least one polyfunctional carboxylic acid compound selected from said group consisting of polyfunctional carboxylic acids and anhydrides thereof, and (E) an inorganic filler. The components are present in proportions such that, based on 100 parts by weight of the radically polymerisable monomer (A), the amount of the thermoplastic resin (B) is in the range of 5 to 75 parts by weight, that of the epoxy resin (C) in the range of 10 to 100 parts by weight, that of the inorganic filler (E) in the range of 100 to 1,000 parts by eights, and that of the polyfunctional carboxylic acid compound (D) in the range of 0.5 to 4.0 equivalent weights per equivalent weight of the epoxy resin (C), and in which an acid anhydride group is assumed to be bifunctional.
Inventors
- 👤 Nobuhiko Yukawa
- 👤 Terukuni Hashimoto
- 👤 Katsuhiko Sakamoto
- 👤 Atsushi Motoyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 08:36
CPC Classifications
C; C08; C08L; C08L101/00; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C04; C04B; C04B26/00; C04B26/02; C04B26/04; C04B26/10; C04B26/14; C08F; C08F283/00; C08F283/10; C08K; C08K3/00; C08K3/01; C08K3/013; C04B2111/00; C04B2111/54; C04B2111/542; C04B2111/545
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
143 words
A setting resin composition characterised in that it comprises (A) a radically polymerisable monomer, (B) a thermoplastic resin soluble or dispersible in said monomer (A), (C) an epoxy resin, (D) at least one polyfunctional carboxylic acid compound comprising a polyfunctional carboxylic acid ar an anhydride thereof, and (E) an inorganic filler; the components being present in the following proportions based on 100 parts by weight of the radically polymerisable monomer (A): 5 to 75 parts by weight of the thermoplastic resin (B), 10 to 100 parts by weight of the epoxy resin (C); and 100 to 1,000 parts by weight of the inorganic filler (E); the polyfunctional carboxylic acid compound (D) being present in the range of 0.5 to 4.0 equivalent weights per equivalent weight of the said epoxy resin (C), and in which the acid anhydride group is assumed to be bifunctional.
Claim 2
Dependent Claim
143 words
A setting resin composition characterised in that it comprises (A) a radically polymerisable monomer, (B) a thermoplastic resin soluble or dispersible in said monomer (A), (C) an epoxy resin, (D) at least one polyfunctional carboxylic acid compound comprising a polyfunctional carboxylic acid ar an anhydride thereof, and (E) an inorganic filler; the components being present in the following proportions based on 100 parts by weight of the radically polymerisable monomer (A): 5 to 75 parts by weight of the thermoplastic resin (B), 10 to 100 parts by weight of the epoxy resin (C); and 100 to 1,000 parts by weight of the inorganic filler (E); the polyfunctional carboxylic acid compound (D) being present in the range of 0.5 to 4.0 equivalent weights per equivalent weight of the said epoxy resin (C), and in which the acid anhydride group is assumed to be bifunctional.
Claim 3
Dependent Claim
19 words
A composition as claimed in Claim 1, characterised in that the thermoplastic resin (B) is polystyrene and/or polymethyl methacrylate.
Claim 4
Dependent Claim
62 words
A composition as claimed in Claim 1, characterised in that the thermoplastic resin (B) possesses a functional group capable to reacting with the epoxy resin (C) or the polyfunctional carboxylic acid compound (D), the thermoplastic resin (B) preferably containing in its molecular unit at least one of the following functional groups: epoxy group, thioepoxy group, aziridine group, oxazoline group, and N-hydroxyalkylamide group.
Claim 5
Dependent Claim
25 words
A composition as claimed in any preceding claim characterised in that inorganic filler (E) is the hydrate of a metal oxide or comprises aluminium hydroxide.
Claim 6
Dependent Claim
29 words
A composition as claimed in any preceding Claim characterised in that the radically polymerisable monomer (A) includes a polyfunctional (meth) acrylate and an aromatic vinyl compound as essential components.
Claim 7
Dependent Claim
27 words
A composition as claimed in any preceding claim, characterised in that the epoxy resin (C) possesses an epoxy equivalent weight in the range of 70 to 250.
Claim 8
Dependent Claim
22 words
A composition as claimed in any preceding claim, characterised in that the polyfunctional carboxylic acid compound (D) is a dicarboxylic acid anhydride.
Claim 9
Dependent Claim
98 words
A composition as claimed in any preceding claim characterised in that the components are present in the following proportions based on 100 parts by weight of the radically polymerisable monomer (A): 10 to 40 parts by weight of the thermoplastic resin (B); 30 to 70 parts by weight of the epoxy resin (C) and 200 to 700 parts by weight of the organic filler (E), the polyfunctional carboxylic acid compound (D) being present in the range of 0.8 to 3.0 equivalent weights per equivalent weight of the epoxy resin (C), the acid anhydride being assumed to be bifunctional.
Claim 10
Dependent Claim
32 words
Artificial marble characterised in that it is obtained by forming into a prescribed shape a setting resin composition as claimed in any preceding Claim and causing the formed resin composition to set.
Claim 11
Independent Claim
103 words
A method for the production of artificial marble, characterised by mixing a setting resin composition as claimed in any of Claims 1 to 8 with a radical polymerisation initiator, casting the resultant mixture in a mould, promoting a radical polymerisation reaction of the mixture in the mould until the mixture is set to such an extent that it is at least releasable from the mould, removing the mixture from the mould in a partly set state, and subsequently heating the partly set mixture thereby promoting a setting reaction of the epoxy resin in the mixture and causing the mixture to be thoroughly set.
Claim 12
Dependent Claim
25 words
A method as claimed in Claim 10, characterised in that the radical polymerisation reaction is carried out at normal room temperature or an elevated temperature.
Claim 13
Dependent Claim
65 words
A method as claimed in Claim 11, characterised in that the radical polymerisation reaction is carried out at a temperature in the range of 40°C to 120°C by using as a radical polymerisation initiator a peroxide catalyst possessing a 10-hour half-life temperature in the range of 50°c to 110°C, and the setting reaction of the epoxy resin is carried out at a temperature exceed 120°C.
Claim 14
Dependent Claim
48 words
A method as claimed in any of Claim 10 to 12 characterised in that the radical polymerisation initiator is T-butyl peroxy-2-ethylhexanoate, t-butyl peroxypivalate or benzoyl peroxide and the setting reaction of the epoxy resin is preferably carried out at a temperature in the range of 130°C to 200°C.
Claim 15
Independent Claim
35 words
A method as claimed in any of Claims 10 to 13, characterised in that the mould used in adapted to form a three-dimensional structure possessing a complicated shape, for example a washbowl or a bathtub.
References Cited (Backward Citations)
No citation records indexed.
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