RU2002115294A

RU2002115294A - METHOD FOR REMOVING SILICON ODOR

Info

Publication number: RU2002115294A
Application number: RU2002115294/04A
Authority: RU
Inventors: Роберт Джеймс ПЕРРИ; Джон Алфред КИЛГУР; Стивен Б. ДОРН
Original assignee: Дженерал Электрик Компани
Priority date: 1999-11-10
Filing date: 2000-10-23
Publication date: 2003-12-27

Claims

1. A method of eliminating stinking elements from a silicone solvent for dry dry cleaning, comprising contacting the silicone solvent with the adsorbent, and separating the silicone solvent from the adsorbent.

2. The method according to claim 1, wherein said method is batch.

3. The method according to claim 1, wherein said method is continuous.

4. The method according to claim 2, in which approximately 100 parts by weight silicone is contacted with approximately 100 parts by weight absorbent.

5. The method according to claim 2, in which the solvent is in contact with the adsorbent for about 0.1 to 6 hours

6. The method according to claim 2, in which the solvent is in contact with the adsorbent at a temperature of approximately 10 to 100 ° C.

7. The method according to claim 3, in which the silicone solvent is contacted with an adsorbent in a ratio of approximately 10 parts by weight. solvent to about 1 parts by weight adsorbent.

8. The method according to claim 3, in which the solvent is in contact with the adsorbent for about 0.1 to 6 hours

9. The method according to claim 3, in which the solvent is in contact with the adsorbent at a temperature of approximately 10 to 100 ° C.

10. The method according to claim 1, in which the adsorbent means granular activated carbon, 4A or 13X molecular sieves.

11. The method according to claim 1, in which the solvent means a linear or branched volatile siloxane solvent of the formula

M _{2 + y + 2z} D _x T _y Q _z,

in which M means R

\binom{1}{3}

SiO _1/2 ;

D means R

\binom{2}{2}

SiO _2/2 ;

T means R ³ SiO _3/2 ;

Q means SiO _4/2 ,

each of R ¹ , R ² and R ³ independently means a monovalent hydrocarbon radical;

each of x and y means an integer, with 0≤x≤10, 0≤y1≤0 and 0≤z≤10.

12. The method according to claim 1, in which the solvent means a cyclic siloxane of the formula

in which each of R ⁵ , R ⁶ , R ⁷ and R ⁸ independently means a monovalent hydrocarbon group;

each of a and b represents integers, with 0≤a≤10 and 0≤b≤10, provided that 3≤ (a + b) ≤10.

13. The method according to item 12, in which the cyclic siloxane essentially consists of decamethylcyclopentasiloxane.

14. The method according to claim 1, wherein the malodorous elements removed from the solvent are propionic acid, propionic aldehyde, butyric acid or butyraldehyde.

15. Silicone solvent processed by the method according to claim 1.

16. The adsorbent used in the method according to claim 1, wherein said adsorbent comprises malodorous elements selected from propionic acid, propionic aldehyde, butyric acid and butyric aldehyde.

17. A dry cleaning method comprising (1) cleaning the product as a result of the following steps: (a) contacting the product with a silicone solvent, and (b) removing the silicone solvent, and (2) treating the silicone solvent removed from the following steps (a ) contacting the silicone solvent with the adsorbent, and (b) separating the silicone solvent from the adsorbent.

18. The method according to 17, further comprising reusing the treated silicone solvent in step (1).