GB2221219A - Ultra-violet curable plastics compositions - Google Patents
Ultra-violet curable plastics compositions Download PDFInfo
- Publication number
- GB2221219A GB2221219A GB8817833A GB8817833A GB2221219A GB 2221219 A GB2221219 A GB 2221219A GB 8817833 A GB8817833 A GB 8817833A GB 8817833 A GB8817833 A GB 8817833A GB 2221219 A GB2221219 A GB 2221219A
- Authority
- GB
- United Kingdom
- Prior art keywords
- composition according
- monomer
- softener
- soft acrylic
- ultra
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 35
- 239000004033 plastic Substances 0.000 title claims abstract description 11
- 229920003023 plastic Polymers 0.000 title claims abstract description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000000178 monomer Substances 0.000 claims abstract description 14
- 239000004088 foaming agent Substances 0.000 claims abstract description 8
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229920000058 polyacrylate Polymers 0.000 claims abstract description 5
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical group COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 4
- HNRMPXKDFBEGFZ-UHFFFAOYSA-N ethyl trimethyl methane Natural products CCC(C)(C)C HNRMPXKDFBEGFZ-UHFFFAOYSA-N 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 3
- 229930195734 saturated hydrocarbon Natural products 0.000 claims description 3
- OJRYAOYVYFKEPI-UHFFFAOYSA-N 2,2-dimethylbutane;2-methylprop-2-enoic acid Chemical compound CCC(C)(C)C.CC(=C)C(O)=O OJRYAOYVYFKEPI-UHFFFAOYSA-N 0.000 claims description 2
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 claims description 2
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 abstract 1
- -1 alkylene glycol ester Chemical class 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 241000776457 FCB group Species 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
- A61K6/887—Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plastic & Reconstructive Surgery (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Preparations (AREA)
Abstract
To invention relates to curable plastics compositions and more particularly to ultra-violet curable plastics compositions useful for the manufacture of dental plates. The curable compositions comprise a base material, an acrylate monomer, a polymerisable alkylene glycol ester, a curving accelerator, a foaming agent and preferably also a softener, e.g. a mixture of a soft acrylic polymer and soft acrylic monomer.
Description
"IMPROVEMENTS IN OR RELATING TO CURABLE PLASTICS
COMPOSITIONS"
The present invention relates to curable plastics compositions and more specifically to an ultra-violet (U.V.) curable plastics composition.
U.V. curable plastics compositions are known although none is particularly suitable for the purpose for which the composition of the present invention is eminently suitable, that is, as a material for forming dental plates.
It is well known in the art of making dental plates to drop dental plate material in divided form in small doses onto a model of the mouth contacting surface for the plate and to add droplets of a cold-curing resin to the divided material to form a paste. The dental technician "sculptures" the build up of material on the model and adds teeth and/or other attachments required as the build-up of the plate proceeds. This method can only be practised by very highly skilled technicians and as the technician is continuously adjusting the consistency of the material being worked, to permit accurate sculpturing, the method is very wasteful of time and is thereby expensive.
A further disadvantage of the above identified prior art method is that many cold-curing resins give off toxic fumes and very stringent safety precautions are necessary when working with such materials.
It is an object of the present invention to provide a plastics composition that is readily sculptured and that can be rapidly cured by U.V.
According to the present invention there is provided a
U.V. curable plastics composition comprising an base material, an alhyacrylate monomer, an alhylene glycol, a curing accelerator and a foaming agent.
Preferably the composition includes a softener.
It is presently preferred that the alhyacrylate monomer be methylmethacrylate.
It is presently preferred that the alhylene glycol be ethylene glycol dimethacrylate
Preferably the softener comprises a mixture of a soft acrylic polymer and a soft acrylic monomer.
The foaming agent may be any foaming agent compatible with the other constituents of the mixture but one foaming agent which has been found to be advantageous is that sold under the brand name RELOSIL by Croxton & Gary.
The U.V. accelerator may also be any U.V. accelerator compatible with the other constituents but one U.V.
accelerator which has been found to be most advantageous is that sold under the brand name ESACURE by Croxton & BR<
Gary.
The composition may also include an alhyl substituted saturated hydrocarbon, preferably trimethylpropane methacrylate.
Preferably the above composition is used in combination with a base material and one material found to be most efficacious is that sold under the brand name
LARMER EA 81 by B.A.S.F. Group A.K..
The following general formulation has been found to be particularly advantageous for moulding;
alhylacrylate monomer,
alhylene glycol,
curing accelerator,
foaming agent,
softener (polymer), and
softener (monomer).
in combination with LARMER EA 81, the latter comprising between 35% and 60% by volume of the final mixture.
By varying the proportion of the "softeners" varying degrees of hardness can be obtained to meet specific requirements.
the following specific formulations have been found to be particularly suitable for dental plates, the proportions recited being by volume;
93% to 94% LARMER EA 81
4.5% to 4.7% Methylmethacrylate monomer,
0.8 to 0.85 Cole soft acrylic polymer,
0.45 to 0.47 Cole soft acrylic monomer,
0.26 to 0.29 REOLOSIL,
0.22 to 0.25 ESACURE KB1,
0.11 to 0.16 Ethylene Glycol, and
0.1 to 0.14 Trimethylpropane.
"Cole" is a brand name of Cole Polymers.
The compositions of the present invention may also be useful for forming a plate or sheet material or as a coating material and has the advantage of a very rapid curing time, often as little as 5 to 8 seconds when exposed to U.V. radiation.
Claims (12)
1. An ultra-violet curable plastics composition comprising, in combination, a base material, an alhyacrylate monomer, an alhylene glycol, a curing accelerator and a foaming agent.
2. A composition according to claim 1 including a softener.
3. A composition according to claim 1 or 2 characterised in that the said alhyacralate monomer is methylmethacrylate monomer.
4. A composition according to claim 1, 2 or 3 characterised in that the alhylene glycol is ethylene glycol dimethacrylate.
5. A composition according to claim 2 characterised in that said softener comprises a mixture of a soft acrylic polymer and a soft acrylic monomer.
6. A composition according to claim 1, 2, 3, 4 or 5 including an alhyl substituted saturated hydrocarbon.
7. A composition according to claim 6 characterised in that the alhyl substituted saturated hydrocarbon comprises trimethylpropane methacrylate.
8. A composition according to any prededing claim characterised in that the base material comprises from 35% to 96% by volume of the composition
9. A composition according to any of the preceding claims comprising a base material,
Alhyacrylate monomer,
Alhylene glycol,
curing accelerator,
foaming agent,
softener (polymer), and
softener (monomer).
10. A composition according to any of the preceding claims comprising
93% to 94% LAROMER EA 81
4.5% to 4.7% Methylmethacrylate monomer,
0.8 to 0.85 Cole soft acrylic polymer,
0.45 to 0.47 Cole soft acrylic monomer,
0.26 to 0.29 REOLOSIL,
0.22 to 0.25 ESACURE KBl, 0.11 to 0.16 Ethylene Glycol, and
0.1 to 0.14 Trimethylpropane.
11. An ultra-violet curable plastics composition according to claim 1 substantially as described herein.
12. A dental plate made from the composition defined in any of the preceding claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8817833A GB2221219A (en) | 1988-07-27 | 1988-07-27 | Ultra-violet curable plastics compositions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8817833A GB2221219A (en) | 1988-07-27 | 1988-07-27 | Ultra-violet curable plastics compositions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8817833D0 GB8817833D0 (en) | 1988-09-01 |
| GB2221219A true GB2221219A (en) | 1990-01-31 |
Family
ID=10641167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8817833A Withdrawn GB2221219A (en) | 1988-07-27 | 1988-07-27 | Ultra-violet curable plastics compositions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2221219A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1528857A (en) * | 1975-10-31 | 1978-10-18 | Toppan Printing Co Ltd | Method for manufacture of expanded articles having an embossed surface |
-
1988
- 1988-07-27 GB GB8817833A patent/GB2221219A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1528857A (en) * | 1975-10-31 | 1978-10-18 | Toppan Printing Co Ltd | Method for manufacture of expanded articles having an embossed surface |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8817833D0 (en) | 1988-09-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |