US3779783A
Expired / Lapsed
US
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Meltable coating compositions, particularly for foodstuffs and pharmaceutical preparations
Assignee: Dynamit Nobel AG
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Filing: 1971-06-18
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Granted: 1973-12-18
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Expires: 1991-06-18
Abstract
Abstract A coating composition especially suitable for foodstuffs and pharmaceutical preparations which comprises an acylated glyceride having an iodine value below 12 admixed in certain proportions with a cellulose propionate having an acetyl content less than about 6% by weight, a hydroxyl content less than about 3.0% by weight and a content of acyl groups having more than 3 carbon atoms of less than about 10% by weight.
Inventors
- 👤 H Bunger
- 👤 G Renckhoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:41
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; A61K9/2806; A61K9/282; A23; A23B; A23B2/00; A23B2/70; A23B2/725; A23B2/729; A23B4/00; A23B4/10; A23P; A23P20/00; A23P20/10; A23P20/105; A23P20/11; A61K9/2833; A61K9/286; A61K9/2866; C; C11; C11C; C11C3/00; C11C3/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
29 words
The coating composition of claim 1, in which the cellulose propionate employed exhibits, at 25* C. in a 20% solution in acetone, a viscosity of less than 500 centipoises.
Claim 2
Dependent Claim
30 words
The coating composition of claim 1, in which the content of cellulose propionate is preferably from about 0.2 to about 9.0% by weight of the total weight of the composition.
Claim 3
Dependent Claim
46 words
The coating composition of claim 1, in which the glycerides comprise a molecular-distilled fraction of stearic acid monoglycerides and palmitic acid monoglycerides acetylated to have a hydroxyl number of 88, a saponification number of 320, an acid number below 2, and an iodine value below 1.
Claim 4
Dependent Claim
21 words
The coating composition of claim 1, in which a mixture of different glycerides represented by said general formula is contained therein.
Claim 5
Dependent Claim
37 words
The coating composition of claim 1, in which said glyceride is selected from the group consisting of mono- and di-glycerides of saturated fatty acids containing from 16 to 22 carbon atoms acylated with acetyl or propionyl groups.
Claim 6
Dependent Claim
16 words
The coating composition of claim 1, in which said glyceride is admixed with said cellulose propionate.
Claim 7
Dependent Claim
16 words
The coating composition of claim 7, in which said glyceride has an iodine number below 3.
Claim 8
Dependent Claim
96 words
The coating composition of claim 1, in which said glyceride has a hydroxyl number of 88, a saponification number of 320, an acid number below 2, an iodine number below 1, and an ascending melting point of 38.8* C., and said cellulose propionate has an acetyl content of 3.6% by weight, a propionyl content of 44.8% by weight and a content of acyl groups of more than 3 carbon atoms less than 1% by weight; said composition consisting essentially of 98.0 parts by weight of said glyceride and 2.0 parts by weight of said cellulose propionate.
Claim 9
Dependent Claim
96 words
The coating composition of claim 1, in which said glyceride has a hydroxyl number of 88, a saponification number of 320, an acid number below 2, an iodine number below 1, and an ascending melting point of 38.8* C., and said cellulose propionate has an acetyl content of 3.3% by weight, a propionyl content of 45.5% by weight and a content of acyl groups of more than 3 carbon atoms less than 1% by weight; said composition consisting essentially of 96.0 parts by weight of said glyceride and 4.0 parts by weight of said cellulose propionate.
Claim 10
Dependent Claim
22 words
The coating composition of claim 1, in which said cellulose propionate has a propionyl content of from 38.0 to 59.0% by weight.
Claim 11
Dependent Claim
61 words
A coating composition with a glyceride base for producing odor-stable, meltable coatings having a high permanent flexural strength and exhibiting a low viscosity in the melt state and being particularly suitable for foodstuffs and pharmaceutical preparations, said composition consisting essentially of at least one glyceride having an iodine number of below 12, wherein said glyceride is represented by the general formula:
Claim 12
Dependent Claim
50 words
The coating composition of claim 12, in which the cellulose propionate exhibits at 25* C. in a 20% solution in acetone, a viscosity of less than 500 cps and the content of cellulose propionate is from about 0.2 to about 9.0% by weight of the total weight of the composition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |