Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
33 words
A CONTINUOUS PROCESS FOR PRODUCING DIORGANOPOLYSILOXANE OILS OF 3 TO 50,000 CENTIPOISE VISCOSITY AT 25*C COMPRISING CONTINOUSLY PSSING A FLUID SILOXANE FEED MIXTURE HAVING THEREIN SILOXANES SELECTED FROM THE CLASS CONSISTING OF (R2SIO)X,
Claim 2
Dependent Claim
33 words
A CONTINUOUS PROCESS FOR PRODUCING DIORGANOPOLYSILOXANE OILS OF 3 TO 50,000 CENTIPOISE VISCOSITY AT 25*C COMPRISING CONTINOUSLY PSSING A FLUID SILOXANE FEED MIXTURE HAVING THEREIN SILOXANES SELECTED FROM THE CLASS CONSISTING OF (R2SIO)X,
Claim 3
Dependent Claim
70 words
The process of claim 1 wherein the catalyst bed is located in a packed column and further comprising continuously transferring said product stream from the catalyst bed into a distillation column maintained at 250* - 300* C and 5 to 30 millimeters of Hg pressure, continuously removing low boiling siloxanes from said product stream and having from said distillation column a final product stream composed essentially of the desired product.
Claim 4
Dependent Claim
54 words
The process of claim 2 wherein the feed mixture into the catalyst bed has from 1000 parts per million to 5 percent water and wherein the product stream from said catalyst bed has 100 parts per million to 1 percent by weigth of water and from 0 to 5 parts per million of acid.
Claim 5
Dependent Claim
30 words
The process of claim 3 wherein prior to passing said feed mixture into said catalyst bed it is passed into a heat exchanger and heated from 85* tO 150* C.
Claim 6
Dependent Claim
24 words
The process of claim 4 wherein the acid-activated carbon black is activated with an adid selected from the class consisting of H2SO4 and HC1.
Claim 7
Dependent Claim
35 words
The process of claim 5 wherein the acid-activated carbon black has a U.S. mesh size that varies from 8 to 70 and a surface area that varies from 700 to 2,000 square meters per gram.
Claim 8
Dependent Claim
20 words
The process of claim 6 wherein the R radical is selected from the class consisting of methyl, ethyl and vinyl.
Claim 9
Dependent Claim
42 words
The process of claim 3 wherein prior to passing said product stream into said distillation column, water is continuously removed from said product stream and that said stream passing into said distillation column has less than 100 parts per million of water.
Claim 10
Dependent Claim
37 words
The process of claim 6 wherein said catalyst bed is in a column and is present at a concentration of 40 to 200 percent by weight of the fluid siloxane mixture in contact with said catalyst bed.
Claim 11
Dependent Claim
26 words
The process of claim 9 wherein said siloxane feed mixture has a residence time of 10 minutes to 4 hours in contact with said catalyst bed.
Claim 12
Dependent Claim
46 words
A continuous process for producing a diorganopolysiloxane oil of 3 to 50,000 centipoise viscosity at 25* C comprising (a) continuously passing a siloxane feed mixture having therein from 1,000 parts per million to 10 percent by weight of water selected from the class consisting of (R2SiO)x,
Claim 13
Dependent Claim
46 words
A continuous process for producing a diorganopolysiloxane oil of 3 to 50,000 centipoise viscosity at 25* C comprising (a) continuously passing a siloxane feed mixture having therein from 1,000 parts per million to 10 percent by weight of water selected from the class consisting of (R2SiO)x,
Claim 14
Dependent Claim
139 words
The process of claim 11 wherein said second product stream contains substantially no water and 0 to 50 parts per million of acid, further comprising continuously transferring said second product stream through a bed of pure carbon black such that the stream has from 0 to 5 parts per million of acid and continuously passing the stream after neutralization into a distillation column maintained at 250* to 300* C and at 5 to 30 millimeters of Hg pressure so as to continuously remove low boiling siloxanes, continuously transferring a third product stream from said distillation column which third product stream is essentially the pure diorganopolysiloxane desired product of 3 to 50,000 centipoise viscosity at 25* C and continuously passing said low boiling siloxanes removed in said distillation column to said siloxane feed mixture passed into said first catalyst bed.
Claim 15
Dependent Claim
34 words
The process of claim 12 wherein prior to passing said siloxane feed mixture into said first catalyst bed it is transferred through a heat exchanger where it is heated from 85* to 150* C.
Claim 16
Dependent Claim
32 words
The process of claim 13 wherein the acid-activated granular carbon black in said first and second catalyst bed is activated with an acid selected from the class consisting of H2So4 and HC1.
Claim 17
Dependent Claim
35 words
The process of claim 14 wherein the acid-activated carbon black has a U.S. mesh size that varies from 8 to 70 and a surface area that varies from 700 to 2,000 square meters per gram.
Claim 18
Dependent Claim
74 words
The process of claim 15 wherein said first catalyst bed is in a column and is present at a concentration of 10 to 200 percent by weight of the said siloxane mixture in contact with said first catalyst bed and wherein said second catalyst bed is in a column and is present at a concentration of 40 to 200 percent by weight of said first product stream in contact with said second catalyst bed.
Claim 19
Dependent Claim
48 words
The process of claim 16 wherein said feed mixture has a residence time of 10 minutes to 5 hours in contact with said first catalyst bed and said first product stream has a residence time of 10 minutes to 2 hours in contact with said second catalyst bed.
Claim 20
Dependent Claim
20 words
The process of claim 11 wherein the R radical is selected from the class consisting of methyl, ethyl, and vinyl.