Process for disinfecting medical molding materials

• US 5,190,724 A
• Filed: 05/17/1991
• Issued: 03/02/1993
• Est. Priority Date: 09/19/1988
• Status: Expired due to Fees

• Current Assignee: Espe Stiftung & Co. Producktions - Und Vetriebs KG, Henkel Kommandirgesellschaft Auf Aktien
• Original Assignee: Espe Stiftung & Co. Producktions - Und Vetriebs KG, Henkel KGaA (Henkel AG & Co KGaA)
• Inventors: Bansemir, Klaus, Hachmann, Klaus, Disch, Karlheinz
• Primary Examiner(s): Warden, Robert J.
• Assistant Examiner(s): Collins, Laura E.
• Application Number:
  US07/663,818
• Time in Patent Office: 655 Days
• Field of Search: 422/28, 422/36, 134/42, 106/38.51, 106/38
• US Class Current: 422/28
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• CPC Class Codes: A01N 25/02 containing liquids as carriers, diluents or solvents
• CPC Class Codes: A01N 31/02 Acyclic compounds
• CPC Class Codes: A01N 35/02 containing aliphatically bound aldehyde or keto groups, or thio analogues thereof; Derivatives thereof, e.g. acetals
• CPC Class Codes: A01N 35/04 containing aldehyde or keto groups, or thio analogues thereof, directly attached to an aromatic ring system, e.g. acetophenone; Derivatives thereof, e.g. acetals
• CPC Class Codes: A61C 9/00 Impression cups, i.e. impression trays; Impression methods computer-assisted sizing A61C13/0004; instruments for determining occlusion A61C19/05
• CPC Class Codes: A61L 2/18 Liquid substances or solutions comprising solids or dissolved gases

Abstract

In the process disclosed, medical molding materials are treated with an aqueous solution of a disinfectant which contains, in addition, 0.1 to 15 wt.% of a soluble alcohol. This ensures high dimensional stability and good surface quality of the mold, even in the case of critical molding materials as alginates.

Claims

1. In a process for the disinfection of medical molding materials in which, after hardening and removal from the original, the molding materials are contacted with an aqueous solution, said aqueous solution contains a disinfectant selected from the group consisting of aldehydes, phenols, quaternary ammonium compounds, biguanides, active halogen compounds, and peroxidic compounds, wherein the improvement comprises the presence in the aqueous solution of 0.1 to 15% by weight of material selected from the group consisting of soluble alcohols and mixtures thereof.

2. A process as claimed in claim 1 in which the aqueous solution comprises material selected from the group consisting of C_1-3 alcohols, C_3-6 ether alcohols, and mixtures of such alcohols.

3. A process as claimed in claim 2 in which the aqueous solution comprises material selected from the group consisting of ethanol, n-propanol, and glyoxal.

4. A process as claimed in claim 1 in which the aqueous solution comprises from 1 to 10% by weight of water soluble alcohols and mixtures thereof.

5. A process as claimed in claim 1 in which the aqueous solution comprises from 0.1 to 10% by weight of disinfecting agent.

6. A process as claimed in claim 5 in which the aqueous solution contains from 0.1 to 10% by weight of disinfecting agent selected from the group consisting of succindialdehyde, glutardialdehyde, and peroxidic compounds.

7. A process as claimed in claim 3 in which the aqueous solution comprises a combination of glutardialdehyde and glyoxal in a ratio by weight of from 2:

1 to 1;

10.

8. A process as claimed in claim 1 in which the medical molding materials are alginate molding materials.

9. A process as claimed in claim 7, in which the aqueous solution comprises a combination of glutardialdehyde and glyoxal in a ratio by weight of from 2:

1 to 1;

5.

10. A process as claimed in claim 9 in which the aqueous solution comprises from 0.5 to 7% by weight of disinfecting agent.

11. A process as claimed in claim 5 in which the aqueous solution comprises from 0.5 to 7% by weight of disinfecting agent.

12. A process as claimed in claim 11 in which the medical molding materials are alginate molding materials.

13. A process as claimed in claim 10 in which the medical molding materials are alginate molding materials.

14. A process as claimed in claim 9 in which the medical molding materials are alginate molding materials.

15. A process as claimed in claim 7 in which the medical molding materials are alginate molding materials.

16. A process as claimed in claim 6 in which the medical molding materials are alginate molding materials.

17. A process as claimed in claim 5 in which the medical molding materials are alginate molding materials.

18. A process as claimed in claim 4 in which the medical molding materials are alginate molding materials.

19. A process as claimed in claim 3 in which the medical molding materials are alginate molding materials.

20. A process as claimed in claim 2 in which the medical molding materials are alginate molding materials.