US4043327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable compositions
Assignee: Smith and Nephew Research Ltd
•
Filing: 1976-05-11
•
Granted: 1977-08-23
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Expires: 1996-05-11
Abstract
Abstract A novel calcium fluoroaluminosilicate glass consisting essentially of from 25 to 35% by weight of silicon calculated as silica, from 30 to 40% by weight of aluminum calculated as alumina, from 20 to 35% by weight calcium, calculated as calcium oxide, and up to 9% by weight fluorine (preferably 4-7%) can be associated with a poly(carboxylic acid) e.g. as an intimate mixture of glass and acid to constitute a composition curable on contact with water and useful, for example, as a loading on a splinting bandage. Such a bandage preferably has a ratio of set time to gel time from 4:1 to 8:1 with a minimum gel time of 60 seconds.
Inventors
- 👤 William Duncan Potter
- 👤 Andrew Conway Barclay
- 👤 Reginald Dunning
- 👤 Richard John Parry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:49
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/28; A; A61; A61L; A61L15/00; A61L15/07; A61L15/12; C03; C03C; C03C12/00; C03C3/00; C03C3/04; C03C3/062; C03C4/00; C03C4/0035; Y; Y10; Y10S; Y10S526/00; Y10S526/936; Y10S528/00; Y10S528/92
Claims Analysis
Total Claims: 65
Claim 1
Independent Claim
83 words
A curable composition comprising in admixture a particulate calcium fluoroaluminosilicate glass consisting essentially of from 25 to 35% by weight of silicon calculated as silica, from 30 to 40% by weight of aluminum calculated as alumina, from 20 to 35% by weight calcium, calculated as calcium oxide, and up to 9% by weight fluorine; and a solid particulate polymer chosen from the group consisting of poly(carboxylic acid)s and polymeric precursors thereof; the whole mixture being in association with a porous flexible carrier material.
Claim 2
Dependent Claim
83 words
A curable composition comprising in admixture a particulate calcium fluoroaluminosilicate glass consisting essentially of from 25 to 35% by weight of silicon calculated as silica, from 30 to 40% by weight of aluminum calculated as alumina, from 20 to 35% by weight calcium, calculated as calcium oxide, and up to 9% by weight fluorine; and a solid particulate polymer chosen from the group consisting of poly(carboxylic acid)s and polymeric precursors thereof; the whole mixture being in association with a porous flexible carrier material.
Claim 3
Dependent Claim
35 words
A curable composition as claimed in claim 1 in the form of an intimate mixture of the types of particles located at the surface of and within the interstices of the porous flexible carrier material.
Claim 4
Dependent Claim
80 words
A splinting bandage comprising a fibrous bandage substrate and carried thereon an intimate mixture of: a particulate calcium fluoroaluminosilicate glass consisting essentially of from 25 to 35% by weight of silicon calculated as silica, from 30 to 40% by weight of aluminum calculated as alumina, from 20 to 35% by weight calcium, calculated as calcium oxide, and up to 9% by weight fluorine; and a solid particulate polymer chosen from the group consisting of poly(carboxylic acid)s and polymeric precursors thereof.
Claim 5
Dependent Claim
80 words
A splinting bandage comprising a fibrous bandage substrate and carried thereon an intimate mixture of: a particulate calcium fluoroaluminosilicate glass consisting essentially of from 25 to 35% by weight of silicon calculated as silica, from 30 to 40% by weight of aluminum calculated as alumina, from 20 to 35% by weight calcium, calculated as calcium oxide, and up to 9% by weight fluorine; and a solid particulate polymer chosen from the group consisting of poly(carboxylic acid)s and polymeric precursors thereof.
Claim 6
Dependent Claim
21 words
A bandage as claimed in claim 3 in which the fluorine content in the particulate glass is below 7% by weight.
Claim 7
Dependent Claim
23 words
A bandage as claimed in claim 4 in which the fluorine content in the particulate glass is from 4 to 7% by weight.
Claim 8
Dependent Claim
23 words
A bandage as claimed in claim 5 in which the fluorine content in the particulate glass is from 4.5 to 6.0% by weight.
Claim 9
Dependent Claim
22 words
A bandage as claimed in claim 3 in which the silica: alumina ratio in the particulate glass is from 0.7:1 to 1:1.
Claim 10
Dependent Claim
22 words
A bandage as claimed in claim 7 in which the silica: alumina ratio in the particulate glass is from 0.7:1 to 0.8:1.
Claim 11
Dependent Claim
21 words
A bandage as claimed in claim 3 in which the calcium oxide:silica ratio in the particulate glass is at least 1:1.
Claim 12
Dependent Claim
22 words
A bandage as claimed in claim 3 containing in the glass up to 10% by weight of normally encountered compatible glass-making ingredients.
Claim 13
Dependent Claim
27 words
A bandage as claimed in claim 3 containing in the glass from 25-35% silica, 30-38% alumina, 23-35% calcium oxide and 4-7% fluorine, all expressed in weight percentages.
Claim 14
Dependent Claim
27 words
A bandage as claimed in claim 11 containing in the glass from 25-30% silica, 31-38% alumina, 27-33% calcium oxide and 4-7% fluorine, all expressed as weight percentages.
Claim 15
Dependent Claim
18 words
A bandage as claimed in claim 3 in which the glass is present in clear homogeneous non-opaline form.
Claim 16
Dependent Claim
112 words
A bandage as claimed in claim 3 in which the particulate glass is made by melting a batch comprising: 25 to 35% by weight of silica; 30 to 40% by weight calculated as alumina of material chosen from the group consisting of alumina and precursors thereof; from 15 to 30% by weight calculated as calcium oxide of material chosen from the group consisting of calcium oxide and precursors thereof and a fluorine-containing compound in an amount to provide up to 9% by weight of fluorine: the total calcium content of the mixture, calculated as calcium oxide being from 20 to 35% by weight; and subsequently solidifying and grinding the glass so formed.
Claim 17
Dependent Claim
32 words
A bandage as claimed in claim 14 wherein the said fluorine-containing compound is added during production of the glass in an amount to provide from 4 to 6% by weight of fluorine.
Claim 18
Dependent Claim
34 words
A bandage as claimed in claim 14 wherein prior to melting the batch contains fluorine-containing compound in an amount which, assuming no fluorine loss, would give from 5 to 7% fluorine in the glass.
Claim 19
Dependent Claim
22 words
A bandage as claimed in claim 14 wherein the particulate glass was melted at over 1350° C prior to solidifying and grinding.
Claim 20
Dependent Claim
16 words
A bandage as claimed in claim 17 wherein the particulate glass was melted at 1400°-1600° C.
Claim 21
Dependent Claim
34 words
A bandage as claimed in claim 14 wherein the fluorine was supplied to the batch for melting in the form of fluoride material chosen from the group consisting of calcium fluoride and aluminum fluoride.
Claim 22
Dependent Claim
35 words
A bandage as claimed in claim 14 wherein there was present in the batch prior to melting at least one material chosen from the group consisting of sodium hydroxide, sodium carbonate, boric acid and borax.
Claim 23
Dependent Claim
19 words
A bandage as claimed in claim 3 wherein the particle size of the glass is less than 100 microns.
Claim 24
Dependent Claim
17 words
A bandage as claimed in claim 20 wherein the said particle size is less than 50 microns.
Claim 25
Dependent Claim
16 words
A bandage as claimed in claim 3 wherein the polymeric precursor is a poly(carboxylic acid anhydride).
Claim 26
Dependent Claim
70 words
A bandage as claimed in claim 23 wherein the said polymer is a homopolymer of an unsaturated chosen from the group consisting of (a) monocarboxylic acid (b) monocarboxylic acid anhydride (c) dicarboxylic acid (d) dicarboxylic acid anhydride; (e) copolymers between at least two of (a) (b) (c) and (d); and (f) copolymers between at least one of (a) (b) (c) and (d) and at least one further ethylenically unsaturated monomers.
Claim 27
Dependent Claim
24 words
A bandage as claimed in claim 24 in which the compound is chosen from acrylic, itaconic, mesaconic, citraconic, and maleic acids or anhydrides thereof.
Claim 28
Dependent Claim
20 words
A bandage as claimed in claim 25 in which the said copolymer is between acrylic acid and acrylamide or acrylonitrile.
Claim 29
Dependent Claim
19 words
A bandage as claimed in claim 25 wherein the said copolymer is between maleic acid and methyl vinyl ether.
Claim 30
Dependent Claim
34 words
A bandage as claimed in claim 25 in which the said copolymer is between one of said anhydrides and an ethylenically unsaturated material chosen from the group consisting of ethylene, propylene, butene and styrene.
Claim 31
Dependent Claim
18 words
A bandage as claimed in claim 28 in which the said copolymer is between maleic anhydride and ethylene.
Claim 32
Dependent Claim
18 words
A bandage as claimed in claim 3 in which the polymer molecular weight is from 1,000 to 1,000,000.
Claim 33
Dependent Claim
18 words
A bandage as claimed in claim 30 in which the said molecular weight is from 50,000 to 500,000.
Claim 34
Dependent Claim
19 words
A bandage as claimed in claim 3 in which the glass: polymer weight ratio is from 0.5:1 to 5:1.
Claim 35
Dependent Claim
16 words
A bandage as claimed in claim 32 wherein the said ratio is from 1.5:1 to 4.5:1.
Claim 36
Dependent Claim
18 words
A bandage as claimed in claim 3 in which the acid has a particle size below 100 microns.
Claim 37
Dependent Claim
16 words
A bandage as claimed in claim 3 having a gel time of 60 to 300 seconds.
Claim 38
Dependent Claim
18 words
A bandage as claimed in claim 35 wherein the said gel time is from 90 to 180 seconds.
Claim 39
Dependent Claim
18 words
A bandage as claimed in claim 36 wherein the said gel time is from 110 to 150 seconds.
Claim 40
Dependent Claim
16 words
A bandage as claimed in claim 3 having a set time of up to 20 minutes.
Claim 41
Dependent Claim
16 words
A bandage as claimed in claim 38 having a set time of 5 to 15 minutes.
Claim 42
Dependent Claim
28 words
A bandage as claimed in claim 3 wherein the ratio of set time to gel time is from 4:1 to 8:1 and minimum gel time is 60 seconds.
Claim 43
Dependent Claim
31 words
A bandage as claimed in claim 3 further comprising an acid chosen from the group consisting of organic polycarboxylic and hydroxycarboxylic acids, in dry particulate form admixed with the curable composition.
Claim 44
Dependent Claim
27 words
A bandage as claimed in claim 41 in which from 5 to 15% by weight of the said acid is present, based on weight of polymeric material.
Claim 45
Dependent Claim
28 words
A bandage as claimed in claim 41 in which the said acid is chosen from the group consisting of tartaric, succinic, oxalic, citric, ascorbic, gluconic and adipic acids.
Claim 46
Dependent Claim
17 words
A bandage as claimed in claim 3 further comprising a particulate filler admixed with the curable composition.
Claim 47
Dependent Claim
16 words
A bandage as claimed in claim 44 wherein the filler is chosen from silica and alumina.
Claim 48
Dependent Claim
20 words
A bandage as claimed in claim 33 further comprising a particulate watersoluble inorganic crystalline material admixed with the curable composition.
Claim 49
Dependent Claim
32 words
A bandage as claimed in claim 46 wherein said material is a slat of a strong acid and a metal chosen from the group consisting of an alkali and alkaline earth metals.
Claim 50
Dependent Claim
21 words
A bandage as claimed in claim 47 wherein the said material is a salt of an alkali metal and hydrochloric acid.
Claim 51
Dependent Claim
13 words
A bandage as claimed in claim 48 wherein the salt is sodium chloride.
Claim 52
Dependent Claim
28 words
A bandage as claimed in claim 46 wherein from 2.5 to 10.0% by weight of said inorganic crystalline material is present, based on total glass and polymer content.
Claim 53
Dependent Claim
20 words
A splinting bandage as claimed in claim 3 wherein the coating weight is from 200 to 500 g/m 2 .
Claim 54
Dependent Claim
19 words
A splinting bandage as claimed in claim 3 in which the bandage is made of Leno weave cotton gauze.
Claim 55
Dependent Claim
16 words
A splinting bandage as claimed in claim 3 in which the bandage is made of polyester.
Claim 56
Dependent Claim
21 words
A splinting bandage as claimed in claim 3 containing up to 5% of a binder based on total supported solids content.
Claim 57
Dependent Claim
15 words
A splinting bandage as claimed in claim 54 wherein the binder is an hydroxyalkyl cellulose.
Claim 58
Dependent Claim
15 words
A splinting bandage as claimed in claim 55 in which the binder is hydroxypropyl cellulose.
Claim 59
Independent Claim
101 words
A method of manufacturing a splinting bandage wherein a fibrous bandage substrate is contacted, in order to load the bandage, with a slurry in an anhydrous liquid containing a particulate calcium fluoroaluminosilicate glass consisting essentially of from 25 to 35% by weight of silicon calculated as silica, from 30 to 40% by weight of aluminum calculated as alumina, from 20 to 35% by weight calcium, calculated as calcium oxide, and up to 9% by weight fluorine; and a solid particulate polymer chosen from the group consisting of poly(carboxylic acid)s and polymeric precursors thereof; and the liquid is thereafter allowed to evaporate.
Claim 60
Independent Claim
101 words
A method of manufacturing a splinting bandage wherein a fibrous bandage substrate is contacted, in order to load the bandage, with a slurry in an anhydrous liquid containing a particulate calcium fluoroaluminosilicate glass consisting essentially of from 25 to 35% by weight of silicon calculated as silica, from 30 to 40% by weight of aluminum calculated as alumina, from 20 to 35% by weight calcium, calculated as calcium oxide, and up to 9% by weight fluorine; and a solid particulate polymer chosen from the group consisting of poly(carboxylic acid)s and polymeric precursors thereof; and the liquid is thereafter allowed to evaporate.
Claim 61
Dependent Claim
19 words
A method as claimed in claim 57 in which the solids content of the slurry is greater than 50%.
Claim 62
Dependent Claim
19 words
A method as claimed in claim 57 in which the anhydrous liquid medium is a solvent for the binder.
Claim 63
Dependent Claim
15 words
A method as claimed in claim 57 in which the anhydrous medium is methylene chloride.
Claim 64
Independent Claim
122 words
A method of treating a living vertebrate which comprises dipping a splinting bandage comprising a fibrous bandage substrate and carried thereon an intimate mixture of: a particulate calcium fluoroalumino silicate glass consisting essentially of from 25 to 35 percent by weight of silicon calculated as silica, from 30 to 40 percent by weight of aluminum calculated as alumina, from 20 to 35 percent by weight of calcium, calculated as calcium oxide, and up to 9 percent by weight fluorine; and a solid particulate polymer chosen from the group consisting of poly(carboxylic acid)s and polymeric precursors thereof in water, applying the same while wet to the patient's body, smoothing and manipulating the same into shape and allowing the same to gel and set.
Claim 65
Independent Claim
122 words
A method of treating a living vertebrate which comprises dipping a splinting bandage comprising a fibrous bandage substrate and carried thereon an intimate mixture of: a particulate calcium fluoroalumino silicate glass consisting essentially of from 25 to 35 percent by weight of silicon calculated as silica, from 30 to 40 percent by weight of aluminum calculated as alumina, from 20 to 35 percent by weight of calcium, calculated as calcium oxide, and up to 9 percent by weight fluorine; and a solid particulate polymer chosen from the group consisting of poly(carboxylic acid)s and polymeric precursors thereof in water, applying the same while wet to the patient's body, smoothing and manipulating the same into shape and allowing the same to gel and set.
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) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |