Use of dispersions in making electronic devices
AssigneeThe Lubrizol Corporation
InventorsDean Thetford, John Schofield
Life of this patent
Estimating the term…
Abstract
Dispersions useful in making capacitors, printed circuit boards, etc., comprising an electronic particulate solid, a carrier and a dispersant of formula (1): R—(O-A-CO)x(O—B—CO)y-Z wherein R is hydrogen or a polymerisation terminating group; A is C8-20-alkylene and/or C8-20-alkenylene; B is C1-6-alkylene or a lactone thereof; Z is hydroxyl or a basic group or a moiety containing a basic group; x is from 2 to 45; Y is from 0 to 15; and the ration of x:y is not less than 3:1, the carrier is a high boiling organic liquid having a boiling point between 150 and 350° C. selected from monohydric alcohols and esters of dialkylene glycol monoalkyl esters.
Claims28
The use of a dispersion in the manufacture of an electrical device wherein the dispersion comprises an electronic particulate solid, a carrier and a dispersant of formula 1.
- R—(O-A-CO)x(O—B—CO)y-Z 1
- wherein
- R is hydrogen or a polymerisation terminating group;
- A is C8-20-alkylene and/or C8-20-alkenylene;
- B is C1-6-alkylene or a lactone thereof;
- Z is hydroxyl or a basic group or a moiety containing a basic group;
- x is from 2 to 45;
- y is from 0 to 15;
- and
- the ratio of x:y is not less than 3:1.
(canceled)
(canceled)
(canceled)
A composition comprising a carrier which is a high boiling organic liquid having a boiling point between 150 and 350° C. selected from monohydric alcohols and esters of dialkylene glycol monoalkyl ethers and a dispersant of formula 1
- R—(O-A-CO)x(O—B—CO)y-Z 1
- wherein
- R is hydrogen or a polymerisation terminating group;
- A is C8-20-alkylene and/or C8-20-alkenylene;
- B is C1-6-alkylene or a lactone thereof;
- Z is hydroxyl or a basic group or a moiety containing a basic group;
- x is from 2 to 45;
- y is from 0 to 15;
- and
- the ratio of x:y is not less than 3:1.
(canceled)
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Dependencies are inferred from the claim text.