Patent CA1178853A successfully refreshed from Google Patents.
CA1178853A
Expired / Lapsed
CA
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Coated coloured intagliated articles
Assignee: Syngenta Ltd
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Filing: 1982-03-04
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Granted: 1984-12-04
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Expires: 2002-03-04
Abstract
Abstract ABSTRACT Coated articles, for example coloured pharmaceutical tablets, bearing highlighted intagliations. The articles are coloured intagliated articles bearing at least one film coat comprising at least one optically anisotropic substanced, for example magnesium carbonate, and at least one film coating agent. Process for manufacturing said articles.
Inventors
- 👤 Sidney F. Forse
- 👤 Raymond C. Rowe
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-03 18:33
CPC Classifications
A; A23; A23G; A23G3/00; A23G3/34; A23G3/50; A23G3/02; A23G3/28; A61; A61K; A61K9/00; A61K9/20; A61K9/2072; B; B44; B44F; B44F1/00; B44F1/08; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24521; Y10T428/24554; Y10T428/24612; Y10T428/24628; Y10T428/24636; Y10T428/24736; Y10T428/24942; Y10T428/31504; Y10T428/31971
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
45 words
A coloured solid article bearing at least one highlighted intagliation, which comprises a coloured intagliated article bearing at least one film coat comprising at least one optically aniso-tropic substance having a minimum refractive index not greater than 2.00 and at least one film coating agent.
Claim 2
Dependent Claim
45 words
A coloured solid article bearing at least one highlighted intagliation, which comprises a coloured intagliated article bearing at least one film coat comprising at least one optically aniso-tropic substance having a minimum refractive index not greater than 2.00 and at least one film coating agent.
Claim 3
Dependent Claim
16 words
An article as claimed in claim 1 which is used in the pharmaceutical or veterinary field.
Claim 4
Dependent Claim
15 words
An article as claimed in claim 2 which is a pharmaceutical tablet or a bolus.
Claim 5
Dependent Claim
14 words
An article as claimed in claim 1 which is a piece of sugar confectionery.
Claim 6
Dependent Claim
48 words
An article as claimed in claim 1 in which, prior to the application of the film coat or coats comprising at least one optically anisotropic substance and at least one film coating agent, the intagliated article bears at least one film coat comprising at least one colouring agent.
Claim 7
Dependent Claim
44 words
An article as claimed in claim 1 in which the colour is due to the presence of at least one eolouring agent selected from red, yellow and black iron oxide, carmine, natural dyes, water-soluble dyes, and aluminium lakes of water-soluble dyes, and mixtures thereof.
Claim 8
Dependent Claim
26 words
An article as claimed in claim 6 in which the eolouring agent or agents is or are in admixture with at least one opaque white pigment.
Claim 9
Dependent Claim
16 words
An article as claimed in claim 7 in which the opaque white pigment is titanium dioxide.
Claim 10
Dependent Claim
15 words
An article as claimed in claim 1 in which the optically anisotropic substance is white.
Claim 11
Dependent Claim
19 words
An article as claimed in claim 9 in which the optically anisotropic substance is a known transparent white pigment.
Claim 12
Dependent Claim
31 words
An article as claimed in claim 9 or 10 in which the optically anisotropic substance is aluminium hydroxide, kaolin, talc, calcium carbonate, barium carbonate, magnesium carbonate, sucrose, lactose or tartaric acid.
Claim 13
Dependent Claim
28 words
An article as claimed in claim 3 containing a medicinal or veterinary agent, in which the medicinal or veterinary agent is also used as the optically anisotropic substance.
Claim 14
Dependent Claim
40 words
An article as claimed in claim 1 in which the film coating agent is a cellulose ether or cellulose acetate phthalate, hydroxypropyl methylcellulose phthalate, polyvinyl acetate, poly-vinyl acetate phthalate, cellulose acetate, shellac or an acrylic resin, or a mixture thereof.
Claim 15
Dependent Claim
26 words
An article as claimed in claim 13 in which the cellulose ether is methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropyl methylcellulose or sodium carboxymethylcellulose or a mixture thereof.
Claim 16
Dependent Claim
27 words
An article as claimed in claim 1 in which the film coat contains at least one film coating adjuvant selected from plasticisers, surface active agents and waxes.
Claim 17
Dependent Claim
52 words
An article as claimed in claim 1 in which the optically anisotropic substance has a minimum refractive index which is the same as or similar to the refractive index of the film coating agent, and it has a maximum refractive index which is as different as possible from its minimum refractive index.
Claim 18
Dependent Claim
36 words
An article as claimed in claim 1 in which the film coat or coats, comprising at least one optically anisotropic substance and at least one film coating agent, contains or contain at least one colouring agent.
Claim 19
Dependent Claim
44 words
An article as claimed in claim 1 which carries, on top of the film coat or coats comprising at least one optically anisotropic substance and at least one film coating agent, at least one outer film coat comprising at least one film coating agent.
Claim 20
Dependent Claim
33 words
An article as claimed in claim 18 in which the said outer film coat or coats comprises or comprise at least one film coating adjuvant selected from plasticisers, surface active agents and waxes.
Claim 21
Dependent Claim
24 words
An article as claimed in claim 18 in which the said outer film coat or coats comprises or comprise at least one colouring agent.
Claim 22
Dependent Claim
40 words
An article as claimed in claim 18 in which the film coating agent is a cellulose ether or cellulose acetate phthalate, hydroxypropyl methylcellulose phthalate, polyvinyl acetate, polyvinyl acetate phthalate, cellulose acetate, shellac or an acrylic resin, or a mixture thereof.
Claim 23
Dependent Claim
39 words
An article as claimed in claim 20 in which the colouring agent or agents is or are selected from red, yellow and black iron oxide, carmine, natural dyes, water-soluble dyes, and aluminium lakes of water-soluble dyes, and mixtures thereof.
Claim 24
Dependent Claim
46 words
A coloured solid article bearing at least one highlighted intagliation, which comprises a coloured intagliated article bearing at least one film coat comprising at least one optically anisotropic substance selected from the group consisting of known transparent white pigments, magnesium carbonate, sucrose, lactose and tartaric acid.
Claim 25
Dependent Claim
46 words
A coloured solid article bearing at least one highlighted intagliation, which comprises a coloured intagliated article bearing at least one film coat comprising at least one optically anisotropic substance selected from the group consisting of known transparent white pigments, magnesium carbonate, sucrose, lactose and tartaric acid.
Claim 26
Dependent Claim
24 words
An article as claimed in claim 23 in which the known transparent white pigment is aluminium hydroxide, kaolin, talc, calcium carbonate or barium carbonate.
Claim 27
Dependent Claim
16 words
An article as claimed in claim 23 or 24 which is a pharmaceutical tablet or bolus.
Claim 28
Dependent Claim
16 words
An article as claimed in claim 23 or 24 which is a piece of sugar confectionery.
Claim 29
Dependent Claim
71 words
A process for the manufacture of an article as claimed in claim 1, which comprises applying to a coloured intagliated article a film coating suspension comprising at least one optically aniso-tropic substance having a minimum refractive index not greater than 2.00 and at least one film coating agent, which process is carried out in a conventional film coating apparatus such that a rubbing action takes place between the articles being coated.
Claim 30
Dependent Claim
16 words
A process as claimed in claim 27 in which the suspension is an organic solvent-based suspension.
Claim 31
Dependent Claim
15 words
A process as claimed in claim 27 in which the suspension is an aqueous suspension.
Claim 32
Dependent Claim
18 words
A process as claimed in claim 27, 28 or 29 which is carried out in a coating drum.
References Cited (Backward Citations)
No citation records indexed.
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