# US 4,513,019 A · Film-forming compositions for enveloping solid forms, particularly pharmaceutical or food products or seeds, and products obtained, coated with said compositions

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- Number: US 4,513,019 A
- Document ID: US4513019A
- Status: Granted
- Kind: A
- Application number: 06/627,665
- Filed: 1984-07-03
- Granted: 1985-04-23
- Earliest claimed: 1983-07-06
- Assignees: Seppic
- Inventors: Bernard Brancq; Michel Malandain
- Web page: https://patentgrep.com/patent/US4513019A

## CPC

- A61K 9/2866: {Cellulose; Cellulose derivatives, e.g. hydroxypropyl methylcellulose}
- A23P 20/105: {Coating with compositions containing vegetable or microbial fermentation gums, e.g. cellulose or derivatives; Coating with edible polymers, e.g. polyvinyalcohol}
- C08L 1/284: {with hydroxylated hydrocarbon radicals}
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A23P: SHAPING OR WORKING OF FOODSTUFFS, NOT FULLY COVERED BY A SINGLE OTHER SUBCLASS
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

The present invention relates to film-forming compositions for enveloping solid forms such as pharmaceutical or food products or seeds, wherein they comprise, by weight: 15 to 85% of a cellulosic film-forming substance, 10 to 70% of at least one alpha-cellulose, 5 to 30% of at least one plasticizer suitable for consumption.

## Claims

### Claim 1

A process for enveloping solid forms such as pharmaceuticals, food products or seeds with a film-forming composition, comprising the steps of:
making a solution or dispersion of the components of a film-forming composition comprising, by weight, 15 to 85% of a cellulosic film-forming substance, 10 to 70% of at least one alpha-cellulose, and 5 to 30% of at least one plasticizer suitable for consumption; and
spraying said solution or dispersion on the form to be enveloped.

### Claim 2 (depends on 1)

A process as in claim 1, wherein said solution or dispersion is in an aqueous medium.

### Claim 3 (depends on 1)

A process as in claim 1, wherein said cellulosic film-forming substance is selected from the group consisting of the alkylethers of cellulose, the hydroxyalkylethers of cellulose, the monocarboxylic esters of cellulose, and the mixed ether esters of cellulose.

### Claim 4 (depends on 3)

A process as in claim 3, wherein said cellulosic film-forming substance is a hydroxypropylmethylcellulose of low viscosity.

### Claim 5 (depends on 1)

A process as in claim 1, wherein said alphacellulose is added in the form of a powder with a granulometry of less than 100 microns.

### Claim 6 (depends on 5)

A process as in claim 5, wherein said alphacellulose is added in the form of a powder with a granulometry of less than 50 microns.

### Claim 7 (depends on 1)

A process as in claim 1, wherein said plasticizer is selected from the group consisting of polyethyleneglycol and the stearate of polyoxyethylene.

### Claim 8 (depends on 2)

A process as in claim 2, wherein said solution or dispersion contains up to about 25% by weight of said film-forming composition.