Acrylate-containing mixed ester monomers and polymers thereof useful as capacitor dielectrics

Claim 2

A composition comprising mixtures of esters having the formulas ##STR14## wherein: R 1 is an aliphatic, alicyclic or mixed aliphatic-alicyclic radical having about 10-40 carbon atoms which optionally contains up to about three non-conjugated olefinic linkages; R 2 is hydrogen or methyl; R 3 is an aliphatic hydrocarbon radical containing about 2-20 carbon atoms and free from acetylenic and polymerizable ethylenic unsaturation; n is from 2 to 4; and m is less than n and is from 1 to 3; at least about 50% of the carboxylate moieties in said compositions having the formula ##STR15##

Claim 3

A composition according to claim 1 wherein R 2 is hydrogen and R 3 is ethyl.

Claim 4

A composition according to claim 2 wherein R 1 is a branched chain radical having at least 18 carbon atoms in a single chain.

Claim 5

A composition according to claim 3 wherein R 1 has the formula ##STR16## wherein r and s are each 7 or 8 and the sum of r and s is 15.

Claim 6

A composition according to claim 4 wherein about 70-90% of the carboxylate moieties have formula III.

Claim 7

An ester mixture prepared by reacting sequentially, in either order, a polyhydroxy compound having the formula R 1 (OH) n , wherein R 1 is an aliphatic, alicyclic or mixed aliphatic-alicyclic radical having about 10-40 carbon atoms which optionally contains up to about three non-conjugated olefinic linkages and n is from 2 to 4, with a first carboxylic acid having the formula ##STR17## wherein R 2 is hydrogen or methyl, or a functional derivative thereof, and a second carboxylic acid having the formula R 3 COOH, or a functional derivative thereof, wherein R 3 is an aliphatic hydrocarbon radical containing about 2-20 carbon atoms and free from acetylenic and polymerizable ethylenic unsaturation, the mole ratio of said first acid to said second acid being at least 1:1.

Claim 8

An ester mixture prepared by reacting sequentially, in either order, a polyhydroxy compound having the formula R 1 (OH) n , wherein R 1 is an aliphatic, alicyclic or mixed aliphatic-alicyclic radical having about 10-40 carbon atoms which optionally contains up to about three non-conjugated olefinic linkages and n is from 2 to 4, with a first carboxylic acid having the formula ##STR17## wherein R 2 is hydrogen or methyl, or a functional derivative thereof, and a second carboxylic acid having the formula R 3 COOH, or a functional derivative thereof, wherein R 3 is an aliphatic hydrocarbon radical containing about 2-20 carbon atoms and free from acetylenic and polymerizable ethylenic unsaturation, the mole ratio of said first acid to said second acid being at least 1:1.

Claim 9

An ester mixture according to claim 6 wherein R 2 is hydrogen and R 3 is ethyl.

Claim 10

An ester mixture according to claim 7 wherein R 1 is a branched chain radical having at least 18 carbon atoms in a single chain.

Claim 11

An ester mixture according to claim 8 wherein R 1 has the formula ##STR18## wherein r and s are each 7 or 8 and the sum of r and s is 15.

Claim 12

An ester mixture according to claim 9 wherein the polyhydroxy compound is reacted first with said first acid and subsequently with said second acid.

Claim 13

An ester mixture according to claim 10 wherein the mole ratio of said first acid to said second acid is about 1.7-1.9:1.

Claim 14

An addition polymer of an ester mixture according to claim 1.

Claim 15

A polymer according to claim 12 in which all of the units are derived from said ester mixture.

Claim 16

An addition polymer of an ester mixture according to claim 6.

Claim 17

A polymer according to claim 14 in which all of the units are derived from said ester mixture.

Claim 18

A capacitor comprising two electrodes separated by a dielectric member, said dielectric member comprising a polymer according to claim 12.

Claim 19

A capacitor according to claim 16 wherein the electrodes are aluminum.

Claim 20

A capacitor comprising two electrodes separated by a dielectric member, said dielectric member comprising a polymer according to claim 13.

Claim 21

A capacitor according to claim 18 wherein the electrodes are aluminum.

Claim 22

A capacitor comprising two electrodes separated by a dielectric member, said dielectric member comprising a polymer according to claim 14.

Claim 23

A capacitor according to claim 20 wherein the electrodes are aluminum.

Claim 24

A capacitor comprising two electrodes separated by a dielectric member, said dielectric member comprising a polymer according to claim 15.

Claim 25

A capacitor according to claim 22 wherein the electrodes are aluminum.