Silicone grease for semiconductors

Claim 2

A SILICONE GREASE COMPOSITION CONSISTING ESSENTIALLY OF ON A WEIGHT BASIS:

Claim 3

FROM 15 TO 97.9 PERCENT OF A POLYSILOXANE FLUID OF THE FORNULA:

Claim 4

FROM 15 TO 97.9 PERCENT OF A POLYSILOXANE FLUID OF THE FORNULA:

Claim 5

from 0.1 percent to 35 percent of a neutral dielectric desiccant selected from the class consisting of: 0.9+0.2Na2O: Al2O3:2.5+0.5SiO2:YH2O and 0.9+0.2CaO:Al2O3:2.5+0.5SiO2:YH2O

Claim 6

from 0.1 percent to 35 percent of a neutral dielectric desiccant selected from the class consisting of: 0.9+0.2Na2O: Al2O3:2.5+0.5SiO2:YH2O and 0.9+0.2CaO:Al2O3:2.5+0.5SiO2:YH2O

Claim 7

A composition of claim 1 wherein the neuTral, dielectric desiccant is anhydrous calcium sulfate.

Claim 8

from 0.1 percent of a neutral, dielectric desiccant being at least one selected from the class consisting of anhydrous calcium sulfate and synthetic zeolites being at least one selected from the class consisting of: 0.95+0.25M2/mO.Al2O3: 2.175+0.825SiO2:YH2O wherein m represents at least one of the materials in the groups consisting of hydrogen, ammonium, metals in Groups I and II of the periodic table and the transition metals of the periodic table, m represents the valence of M, and Y may be any value up to about 6, and 0.9+0.2M''2/mO:Al2O3;2.5+0.5SiO2Y''H2O wherein M'' represents at least one cation having a valence of not more than 3, m'' represents the valence of M'', and Y'' may be any value up to about 8, and

Claim 9

from 0.1 percent of a neutral, dielectric desiccant being at least one selected from the class consisting of anhydrous calcium sulfate and synthetic zeolites being at least one selected from the class consisting of: 0.95+0.25M2/mO.Al2O3: 2.175+0.825SiO2:YH2O wherein m represents at least one of the materials in the groups consisting of hydrogen, ammonium, metals in Groups I and II of the periodic table and the transition metals of the periodic table, m represents the valence of M, and Y may be any value up to about 6, and 0.9+0.2M''2/mO:Al2O3;2.5+0.5SiO2Y''H2O wherein M'' represents at least one cation having a valence of not more than 3, m'' represents the valence of M'', and Y'' may be any value up to about 8, and

Claim 10

FROM 0.1 PERCENT OF A NEUTRAL, DIELECTRIC DESICCANT BEING AT LEAST ONE SELECTED FROM THE CLASS CONSISTING OF ANHYDROUS CALCIUM SULFATE AND SYNTHETIC ZEOLITES BEING AT LEAST ONE SELECTED FROM THE CLASS CONSISTING OF: 0.95+0.25M2/MO.ALO3:2.175+0.825SIO2:YH2O WHEREIN M REPRESENTS AT LEAST ONE OF THE MATERIALS IN THE GROUPS CONSISTING OF HYDROGEN, AMMONIUM, METALS IN GROUPS 1 AND 11 OF THE PERIODIC TABLE AND THE TRANSITION METALS OF THE PERIODIC TABLE, M REPRESENTS THE VALENCE OF M, AND Y MAY BE ANY VALUE UP TO ABOUT 6, AND 0.9+0.2M''2/MO:AL2O3;2.5+0.5SIO2Y''H2O WHEREIN M'' REPRESENTS AT LEAST ONE CATION HAVING A VALENCE OF NOT MORE THAN 3, M'' REPRESENTS THE VALENCE OF M'', AND Y'' MAY BE ANY VALUE UP TO ABOUT 8, AND

Claim 11

FROM 0.1 PERCENT OF A NEUTRAL, DIELECTRIC DESICCANT BEING AT LEAST ONE SELECTED FROM THE CLASS CONSISTING OF ANHYDROUS CALCIUM SULFATE AND SYNTHETIC ZEOLITES BEING AT LEAST ONE SELECTED FROM THE CLASS CONSISTING OF: 0.95+0.25M2/MO.ALO3:2.175+0.825SIO2:YH2O WHEREIN M REPRESENTS AT LEAST ONE OF THE MATERIALS IN THE GROUPS CONSISTING OF HYDROGEN, AMMONIUM, METALS IN GROUPS 1 AND 11 OF THE PERIODIC TABLE AND THE TRANSITION METALS OF THE PERIODIC TABLE, M REPRESENTS THE VALENCE OF M, AND Y MAY BE ANY VALUE UP TO ABOUT 6, AND 0.9+0.2M''2/MO:AL2O3;2.5+0.5SIO2Y''H2O WHEREIN M'' REPRESENTS AT LEAST ONE CATION HAVING A VALENCE OF NOT MORE THAN 3, M'' REPRESENTS THE VALENCE OF M'', AND Y'' MAY BE ANY VALUE UP TO ABOUT 8, AND

Claim 12

The composition of claim 1 wherein the dielectric desiccant is a synthetic zeolite within the scope of the formula: 0.95+0.25M2/mO.Al2O3:2.075+0.825SiO2:YH2O wherein M represents at least one of the materials in the groups consisting of metals in Groups I and II of the periodic table.

Claim 13

FROM 2 PERCENT TO 84.9 PERCENT OF A GREASE THICKENING AGENT BEING AT LEAST ONE SELECTED FROM THE CLASS CONSISTING OF FINELY DIVIDED, NON-CONDUCTING INERT OXIDES OF METALLIC AND GLASS-METALLIC MATERIALS AND INERT ORGANIC THICKENING MATERIALS AND MIXTURES THEREOF SUBSTANTIALLY FREE OF INTERFERING WATER.

Claim 14

FROM 2 PERCENT TO 84.9 PERCENT OF A GREASE THICKENING AGENT BEING AT LEAST ONE SELECTED FROM THE CLASS CONSISTING OF FINELY DIVIDED, NON-CONDUCTING INERT OXIDES OF METALLIC AND GLASS-METALLIC MATERIALS AND INERT ORGANIC THICKENING MATERIALS AND MIXTURES THEREOF SUBSTANTIALLY FREE OF INTERFERING WATER.

Claim 15

from 2 percent to 84.9 percent of a grease thickening agent being at least one selected from the class consisting of finely divided, non-conducting inert oxides of metallic and glass-metallic materials and inert organic thickening materials and mixtures thereof substantially free of interfering water.

Claim 16

from 2 percent to 84.9 percent of a grease thickening agent being at least one selected from the class consisting of finely divided, non-conducting inert oxides of metallic and glass-metallic materials and inert organic thickening materials and mixtures thereof substantially free of interfering water.

Claim 17

from 2 percent to 84.9 percent of zinc oxide.

Claim 18

from 2 percent to 84.9 percent of zinc oxide.

Claim 19

The composition of claim 1 wherein the dielectric desiccant is anhydrous calcium sulfate made by the dehydration of hydrated calcium sulfate.

Claim 20

A composition within the scope of claim 1, consisting essentially of on a weight basis:

Claim 21

The composition of claim 5 wherein the dielectric desiccant is: 0.9+0.2Na2O:Al2O3:2.5+0.5SiO2:YH2O

Claim 22

The composition of claim 5 wherein the dielectric desiccant is: 0.9+2CaO:Al2O3:2.5+0.5SiO2:YH2O

Claim 23

A composition within the scope of claim 1 wherein R represents a member selected from the class consisting of alkyl radicals having from one to 22 carbon atoms and mononuclear aryl radicals.

Claim 24

The composition of claim 1 wherein the grease thickening agent is zinc oxide.