Packaging having sliding layer and method for pharmaceutical and cosmetic substances and preparation for producing same
A liquid preparation for application to an inner side of a hollow body to produce a sliding layer on a packaging for pharmaceuticals or cosmetic products comprises the following constituents: a reactive silicone system for forming a silicone network of the sliding layer, a catalyst for catalyzing the cross-linking reaction of the reactive silicone system, at least one unreactive silicone oil, and at least one diluent. The diluent comprises a silicon-containing compound and a content of the at least one diluent in the preparation amounts to more than 45 percent by weight and less than 95 percent by weight in the preparation.
1. A preparation, comprising:
a reactive silicone system comprising at least one polysiloxane having cross-linkable groups for forming a silicone network of a sliding layer;
a catalyst for catalyzing a cross-linking reaction of the reactive silicone system;
at least one unreactive silicone oil; and
at least one diluent comprising a silicon-containing compound, a content of the at least one diluent in the preparation amounting to more than 45 percent by weight and less than 95 percent by weight in the preparation.
2. The preparation of claim 1 , wherein the reactive silicone system is a multicomponent system comprising a first component and a second component.
3. The preparation of claim 2 , wherein the first component has at least one first functional group and the second component has a plurality of second functional groups.
4. The preparation of claim 2 , wherein a mass ratio of the first component to the second component is in the range of 10:1 to 30:1.
5. The preparation of claim 1 , wherein the preparation has a viscosity at a temperature of 23° C. in the range of 1 cSt to 50,000 cSt.
6. The preparation of claim 1 , wherein the at least one diluent at least one of comprises a silicon-containing organic compound having at most 6 silicon atoms or has a surface tension of less than 19 mN/m.
7. The preparation of claim 6 , wherein the at least one diluent comprises at least one of the following diluents: cyclic silicone, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetramethylcyclotetrasiloxane, pentamethylcyclopentasiloxane, hexamethyldisiloxane (HMDSO), octamethyltrisiloxane, or decamethyltetrasiloxane.
8. The preparation of claim 1 , wherein the preparation has a viscosity at a temperature of 23° C. in the range of 0.5 to 200 mPas.
9. The preparation of claim 1 , wherein the catalyst comprises at least one of an organometallic catalyst, a platinum-containing catalyst, or chloroplatinic acid.
10. The preparation of claim 9 , wherein at least one of a proportion of catalyst in the preparation amounts to 0.001%-5% by weight or a weight ratio of catalyst to the reactive silicone system is in the range of 0.01 to 0.2.
11. The preparation of claim 1 , wherein the preparation comprises an inhibitor for preventing a spontaneous reaction of the reactive silicone system.
12. The preparation of claim 11 , wherein the inhibitor is an alkyne.
13. The preparation of claim 1 , wherein the at least one silicone oil is homogeneously dispersed in the preparation.
14. The preparation of claim 1 , wherein the at least one diluent amounts to at least 80 percent by weight in the preparation.
15. The preparation of claim 1 , wherein the preparation is reactable to form a solidified sliding layer, wherein a coefficient of static friction of a stopper contacting the solidified sliding layer is at most 20% greater than an average coefficient of sliding friction of the stopper against the solidified sliding layer.
16. The preparation of claim 1 , wherein a sliding layer produced on a surface from the preparation is capable of regenerating after cleaning the surface or after the at least one unreactive silicone oil is removed from the surface.
17. The preparation of claim 1 , wherein spreading of 10 μL of the preparation on a cleaned glass surface after about 5 seconds is 7.3 mm or more and 20 mm or less.
18. The preparation of claim 1 , wherein a contact angle of the preparation on a cleaned glass surface after about one second is less than 28°.
19. A packaging for pharmaceuticals or cosmetic products, comprising:
a cylindrical hollow body that is coated on an inner side with a sliding layer, the sliding layer having a silicone network in which a silicone oil is incorporated, the hollow body being configured such that a stopper is insertable into the hollow body and a coefficient of static friction of the stopper, inserted into the hollow body, on the sliding layer is at most 20% greater than an average coefficient of sliding friction, the sliding layer being formed by reaction of a preparation, the preparation comprising:
a reactive silicone system for forming the silicone network of the sliding layer;
a catalyst for catalyzing a cross-linking reaction of the reactive silicone system;
at least one unreactive silicone oil; and
at least one diluent comprising a silicon-containing compound, a content of the at least one diluent in the preparation amounting to more than 45 percent by weight and less than 95 percent by weight in the preparation.