JPS614A - Bond-wrapping material for manufacturing dental composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a method of curable at room temperature.
s ) for the production of polysiloxane-based dental compositions with
iorb packaging). Modern systems of adhesive vinyl silicone pastes include organopolysiloxanes, organohydrogenpolysiloxanes, which are cross-linked to the additive system and usually have two or more vinyl groups in the molecule, to promote the addition reaction. It contains a catalyst, a hydrophobic filler and optionally further customary additives and dyes.

It is prepared in the form of a base paste containing crosslinkers, silicone oils, fillers and optionally dyes. Add both ends to a tube (ttLbe), cartrid (gg) or similar preparation (
cLizpttyil! 1) Fill into the device and present as a bonded wrapper. Prepared (re(L!I'
/-to-u, sa) The dental composition is produced by mixing a paste paste containing a cross-linking agent with a corresponding amount of catalyst paste. The cross-linking reaction is then completed after about 2-5 minutes at room temperature.

In this case, the silicone oil was vinyl terminated (tt
rrni, natad, -polydimethylsiloxane.

The cross-linking agent includes a catalyst consisting of reactive SiH groups and a platinum complex. Both pastes are well suited to each other since they have similar viscosities and can be processed in a mixing ratio of 1:1. The following principle can be similarly applied to known silicone systems in which condensation cross-linking occurs. However, the mixing ratio changes in these systems.

jaws with full teeth, partial teeth and jaws with no teeth;
as well as casting on the jaw with a viscous membrane.
When different methods are used by orthodontists, casting compositions of different viscosities must be provided. Thus, double (cLou, ble
, ) casting method, kneadable (kneαtlabL) as preliminary casting material
e 1 composition is required, and a low viscosity casting composition is required as the modifying material, while in the dual mix method a highly viscous composition is required as the spooning material, and A composition of medium viscosity is required as the injection material. The composition has a medium to high viscosity using a single phase process (zirLglt ph
ase mathematics).

The catalyst paste and the base paste, on the one hand, are of different shades in order to distinguish between the individual viscosity classes. On the other hand, to control visual mixing, a different dye is used in the base paste than in the designated catalyst paste. The base paste and catalyst paste must be mixed together intensively until a homogeneous mixture with uniform color is obtained.

Kneadable compositions are generally filled into plastic containers, while low, medium and high viscosity compositions are filled into tubes or cartridges. In view of the various casting methods, casting compositions of corresponding viscosity classes are stored in dental surgeries.

Tubes associated with one class of viscosity should be characterized by color in order to readily distinguish between catalyst pastes assigned to each base paste, but to avoid confusion of tubes and thus paces and catalysts of different classes of viscosity. −
One-stroke confusion cannot be completely eliminated. This disruption of the tube alters its physical properties and thus causes poor casting results. This is the reason for carrying out the present invention.

The purpose of the present invention is to prevent confusion of pastes of different viscosity classes by suitable cyding of two pastes (VC).

The purpose is to dye one of the two pastes to the shade specified for each viscosity class, and to dye a small portion of the filling capacity of the other paste VC-9! - filling with an inert substance or other paste in the form of a strip and dyeing to the same shade, while the paste contained in the remainder of the filling volume is not dyed or is dyed white or to a contrasting shade; Yosho is achieved.

Preferably the base paste is dyed in the shade specified for each viscosity class and a correspondingly dyed pasty inert substance or corresponding dye is added to a small portion of the filling volume of the catalyst paste. one stroke of the remaining catalyst is undyed or dyed white or a contrasting shade. The catalyst paste is placed in a tubular section (5) with a slit-like opening on the surface shorter than the length of the tube as an extension of the outlet opening (outlet nptnirLf l).
Fill a tube, cartridge, etc. with an internal shoulder and coat a section of dyed catalyst paste or a dyed inert material around the tubular section]~
, while an embodiment of a bonded wrapper in which the non-tubing portion of the remaining tube is filled with a white, as yet undyed, catalyst paste has been found to be extremely useful. Catalyst paste dyed in the shade of the base paste or a correspondingly dyed inert substance up to the level of the end of the tube? 111t1: Fill these tubes or cartridges so as to introduce and coat the undyed catalyst paste onto them.The ends of the tubes are then sealed in the usual manner.The tubes are opened with screw 9. (scre
When compressed with w cap open ), a strand of paste is obtained which consists of a substantially white paste and which flows through the tubular part and the outlet opening. During this process, a small amount of dyed paste comes out through the slit in the tubular part, so that several dyeing stripes occur on the surface of the white paste strander. If such a strand of catalytic paste is mixed with a strand of base paste of the same length from a correspondingly dyed ordinary tube but still a cartridge, one'! - There is a substantial contrast in tone between the strokes, and this contrast gradually disappears as the sequence progresses. The uniformity of color tone confirms that a uniformly processed mixture has been obtained.

The starting materials for vinyl silicone compositions are silicone oil, fillers, crosslinkers, catalysts, and colored pigments. The silicone oil preferably has a viscosity of 200 to 100.000771/'α, depending on the class of viscosity required.
Trimethylsilyl-terminated or vinyl-terminated polydimethylsiloxane having a moderate viscosity. Fill it with X7 agent.

quartz and cristobalite powder, calcyano sulfate 1,
Using diatomers and precipitated and pyrolyzed disilicium diacids.

The cross-linking agent is a polydimethylsiloxane having hydrogen atoms on at least two silicon atoms in the molecule. Siloxane copolymers with different degrees of polymerization terminated with trialkylsilyl or dialkylhydrosilyl groups are known.

The catalyst is hexachloroplatinum (a platinum complex produced from In acid). These compounds are also known as such.

Preferably, the inert material mentioned above which produces the streaks of dye entrapped in the partial volume of the tube with the catalyst paste consists of the silicone oil and filler mentioned above. Inorganic or organic colored pigments are preferably used as dyes.

The tonal coating according to the invention allows the smooth viscous casting compositions commonly used in dentistry for different casting methods to maintain the tones and tones of the solidly colored base paste strands in the same viscosity class. It is characterized by matching the tone of the colored stripes on the strands of catalyst paste, thus eliminating most of the confusion of tubes or cartridges and the mixing of pastes and catalyst pastes of different classes of viscosities. can. Thus, this means that, for example, "highly viscous"
Class blue colored base paste and white -
This prevents the blue-striped catalyst paste from being confused with the "medium viscosity" class green colored paste paste and the white-green striped catalyst paste. This also gives the possibility of obtaining a mixture control as a homogeneous mixture only when mixing the paste and catalyst paste when the mass has a uniform color without streaks or streaks.

A specific example of the present invention will be described next. Figure 1 (preferably l
lt) This is a tube used for catalyst wave strike.

A screw type cap 2 with an outlet opening 6 is placed on the upper end of the tube 1. Centrally arranged inside the tube 1 as an extension of the screw type cap 2 is a short tubular part 4 which is open at the bottom and has slit-like openings distributed over the surface part. 5. The length of tubular portion 4 is tube 1
Approximately 2. ~It's Hama. The large volume located below the tubular part 4 is filled with a colorless or white-colored catalyst paste K. The remaining volume around the tube 40 contains catalyst paste J1 dyed in a paste 4-st shade or a correspondingly dyed 1-streak inert material. The double-dyed composition contained in the smaller partial volume is thus coated onto the undyed or white mass contained in the larger partial volume. Of course, it is also possible for the catalyst paste contained in the large partial volume to be dyed in a completely different (contrasting) shade, ie in a shade other than that of the base paste.

When compressing the tube, a white or colorless strand is obtained with colored stripes on its surface. These stripes are produced by a small amount of paste located around the tube 40 penetrating into the slit-like opening 5 and being applied to the white 4-stroke flowing through the tube 4.

This stripe ensures that there is a clear correlation of the catalytic paste to the similar-toned paste K-st. When the two pastes are mixed, there is initially a noticeable contrast in tone, which then disappears as mixing continues, so that the homogeneity of the mixture can be easily assessed with the naked eye.

In the following specific examples, the parts given will be understood as parts by weight.

Example 1 80 parts of a vinyl-terminated polymethylsiloxane with a viscosity of 10.0001'1 LP (L, l) at 25°C, 2
Viscosity at 5°C: 50mPα0. ? 80 parts of dimethylhydrogensilyl-terminated polymethylsiloxane having
A base paste was produced by mixing 40 parts of pyrogenic silica with f and 5 parts of an inorganic green colored pigment in a kneading apparatus.

400 parts of vinyl-terminated polymethylsiloxane having a viscosity of 10,000 WLPα, S at 25°C, 558 parts of quartz fine powder, 125 parts of calcium sulfate, BET specific surface area of 5
0rr? A catalyst paste was produced by mixing 40 parts of pyrogenic silica having a composition of 0.2 parts, 0.2 parts of platinum siloxane complex and 1.8 parts of titanium dioxide in a kneading apparatus. From 1000 parts of catalyst paste, 100 parts were removed and mixed with 0.5 part of an inorganic green colored pigment.

While the green base paste of viscosity of ``medium viscosity'' class was filled into the regular tube, the catalyst paste of viscosity of ``medium viscosity'' class was filled into the above special tube. The green part of the catalyst paste was first coated around 40 tubular sections with slits 5, and then the white paste was metered into the remaining part of the tube.

When two strands of paste of the same length were compressed from two tubes onto a mixing block (hLock J), a green strand of base paste and a white strand of catalyst paste with green stripes were obtained. When mixed, this initially results in a green-white striped composition, then further mixing results in a uniform bright green tone, and after 6 minutes (7 calculated from the beginning of mixing) a cross-over occurs. 52℃ after another 7 minutes after starting to bond.
A rubber having a hardness of Shore (,5hore) A was produced.

Example 2 495 parts of a vinyl-terminated polymethylsiloxane having a viscosity of IO,00 GmPa,s at 25°C.
300 parts of trimethylhydrogensilyl-terminated 4-sadimethylsiloxane with viscosity 50 mPα, S, surface area partially treated, 11 ET specific surface area 50 d/l
A base paste was produced by mixing 200 parts of pyrogenic silica having a composition of 20% and 5 parts of an inorganic blue colored pigment in a kneading apparatus.

799 parts of vinyl-terminated polydimethylsiloxane with a viscosity of 10.000 rnPa, s at 25°C, partially treated surface area and a BFT specific surface area of 5 Grrt
A catalyst paste was produced by mixing in a kneading apparatus 200 parts of pyrogenic silica, 0.6 parts of platinum-siloxane complex and 0.7 parts of titanium diacid.

100 parts out of 1000 parts (catalyst paste) were removed and mixed with 0.5 part of an inorganic blue colored pigment.

The catalyst paste was filled into special tubes as described above while the blue base paste of viscosity in the "low viscosity" class was filled into regular tubes. 2 of the same length
When strands of book paste were compressed from two tubes onto a mixing block, a blue strand of base paste and a white strand of catalyst paste with blue stripes was obtained. A blue-white striped composition is formed first upon mixing, then upon further mixing a uniform blue composition is formed, and after 6 minutes and 30 seconds (after starting mixing) cross-linking occurs. After a further 6 minutes and 50 seconds, a rubber having a Shore A hardness of 4 (1°) was formed.

Example 3 Mixing a green strand of a pace paste (according to example 1) of a viscosity of the "medium viscosity" class and a white strand of the same-soaked catalyst paste with a blue stripe of a viscosity of the "low viscosity" class placed on the block. green-white-
A blue striped composition formed first upon mixing, and then upon further mixing a homogeneous green mass formed which began to cross-link and form a rubber after 2 minutes and 60 seconds of mixing. and had a Shore A hardness of 55° in 7 minutes and 30 seconds. In comparison with the rubbers obtained according to Examples 1 and 2, this rubber is, for example, ADA grade (5p
The silicone casting composition did not meet the specifications for the silicone casting composition specified in 19%.

Example 4 Mixing block of blue strands of base paste (according to example 2) of viscosity of the "low viscosity" class and white strands of catalyst paste of the same type with green stripes of viscosity of the "medium" class There was a kit above. Blue - White -
A green striped mass forms initially during mixing, a homogeneous composition forms during further mixing, and after 4 minutes it begins to cross-link to form a rubber, and a further 6 minutes. Later, it had a Shore A hardness of 38°. Compared to the rubbers obtained from Examples 1 and 2, this rubber did not fulfill the specifications for silicone casting compositions as defined, for example, in AI)A Specification i1619 Vc.

[Brief explanation of drawings]

FIG. 1 represents the tube used for the catalyst paste.

Claims (1)

[Claims] 1. A bonding packaging material for producing a siloxane-based dental composition that is curable at room temperature, has a defined class of viscosity, and is crosslinkable by an additive system. a first formulation system, the packaging material comprising a base paste consisting of an organopolysiloxane having two or more vinyl groups in the molecule, an organohydrogen polysiloxane, and a hydrophobic filler; a second formulation comprising a catalyst paste consisting of an organopolysiloxane having two or more vinyl groups therein, a hydrophobic filler and a catalyst for promoting the addition reaction; One is dyed in a shade specifying each viscosity class, and a small portion of the filling volume of the formulation for other pastes is filled with a pasty inert substance or other paste and is dyed in the same shade. bonded packaging material which is dyed with a white or contrasting color while the paste contained in the remainder of the filled volume is either undyed or undyed to a white or contrasting tone. 2. The base paste is dyed in a shade specifying each viscosity class, and a small portion of the filling volume of the formulation for the catalyst paste is made of a correspondingly dyed pasty inert substance or a correspondingly The patent claim is filled with a dyed catalyst paste, while the catalyst paste contained in the remainder of the filled volume is either undyed or dyed in white or a contrasting tone. The bonded packaging material according to scope 1. 3. The catalyst paste is contained in a dispensing system, which system has an internal tubular part with a slit-like opening in the surface part as an extension of the outlet opening, and the tubular part is shorter than the length of the dispensing system. The dyed portion of the catalyst paste or colored inert material is then coated around the tubular portion, while the remaining non-tube portion of the dispensing system is coated with a white undyed catalyst paste or a contrasting shade. 3. A bonded packaging material according to claim 2, comprising a catalyst paste dyed with a catalytic paste. 4. The combined packaging material according to any one of claims 1 to 3, wherein the dispensing system is a tube or a cartridge. 5. A bonded packaging material according to any one of claims 1 to 4, wherein the dyed inert paste comprises trimethylsilyl end-capped polydimethylsiloxane with colored pigments and fillers. 6. A bonded wrapper substantially as herein described with reference to Examples 1 or 2 herein or any of the accompanying figures.