High clarity, low haze polyesters having reduced infrared heat-up times

Claim 2

A high clarity, low haze polyester comprising: a polyester, said polyester having a small amount of an infrared absorbing material therein wherein said infrared absorbing material is carbon black, wherein the amount of said carbon black present is from 0.1 to 10 parts by weight per million parts by weight of said polyester, wherein said carbon black has an average particle size of from 10 to 500 nanometers and wherein said high clarity, low haze polyester has a Hunter haze value of less than 4.0 as measured on a sample having a cross-sectional thickness of about 0.028 inch.

Claim 3

A high clarity, low haze polyester comprising: a polyester, said polyester having a small amount of an infrared absorbing material therein wherein said infrared absorbing material is carbon black, wherein the amount of said carbon black present is from 0.1 to 10 parts by weight per million parts by weight of said polyester, wherein said carbon black has an average particle size of from 10 to 500 nanometers and wherein said high clarity, low haze polyester has a Hunter "a" coordinate value of from minus 2 to 2 and a Hunter coordinate "b" value of from minus 4 to 4 and a Hunter haze value of less than 4.0 as measured on a sample having a cross-sectional thickness of about 0.028 inch.

Claim 4

A high clarity, low haze polyester comprising: a polyester, said polyester having a small amount of an infrared absorbing material therein wherein said infrared absorbing material is carbon black, wherein the amount of said carbon black present is from 0.1 to 10 parts by weight per million parts by weight of said polyester, wherein said carbon black has an average particle size of from 10 to 500 nanometers and wherein said high clarity, low haze polyester has a Hunter "a" coordinate value of from minus 2 to 2 and a Hunter coordinate "b" value of from minus 4 to 4 and a Hunter haze value of less than 4.0 as measured on a sample having a cross-sectional thickness of about 0.028 inch.

Claim 5

A high clarity, low haze polyester comprising: a polyester, said polyester having a small amount of an infrared absorbing material therein wherein said infrared absorbing material is carbon black, wherein the amount of said carbon black present is from 0.1 to 8 parts by weight per million parts by weight of said polyester, wherein said carbon black has an average particle size of from 10 to 500 nanometers and wherein said high clarity, low haze polyester has a Hunter "a" coordinate value of from minus 1 to 1 and a Hunter coordinate "b" value of from minus 2 to 2.0 and a Hunter haze value of less than 3.0 as measured on a sample having a cross-sectional thickness of about 0.028 inch.

Claim 6

A high clarity, low haze polyester comprising: a polyester, said polyester having a small amount of an infrared absorbing material therein wherein said infrared absorbing material is carbon black, wherein the amount of said carbon black present is from 0.1 to 8 parts by weight per million parts by weight of said polyester, wherein said carbon black has an average particle size of from 10 to 500 nanometers and wherein said high clarity, low haze polyester has a Hunter "a" coordinate value of from minus 1 to 1 and a Hunter coordinate "b" value of from minus 2 to 2.0 and a Hunter haze value of less than 3.0 as measured on a sample having a cross-sectional thickness of about 0.028 inch.

Claim 7

A high clarity, low haze polyester, according to claim 1, wherein said high clarity, low haze polyester has a Hunter haze value of less than 3.0 as measured on a sample having a cross-sectional thickness of about 0.028 inch.

Claim 8

A high clarity, low haze polyester, according to claim 2 wherein said polyester is made by the reaction of a dicarboxylic acid having from 2 to 40 carbon atoms, or an ester thereof, with a diol having from 2 to 20 carbon atoms.

Claim 9

A high clarity, low haze polyester, according to claim 5, wherein the amount of carbon black ranges from about 1.5 to about 3.5 parts by weight, and wherein said carbon black average particle size ranges from about 10 to about 100 nanometers, and wherein said Hunter "a" coordinate value is from about minus 0.5 to 1.0 and wherein said Hunter "b" coordinate value is from about minus 0.5 to about 2.0.

Claim 10

A high clarity, low haze polyester, according to claim 5, wherein said polyester is poly(ethylene terephthalate).

Claim 11

A high clarity, low haze polyester, according to claim 7, wherein said polyester is in the shape of a preformed article.

Claim 12

A high clarity, low haze polyester, according to claim 5, wherein said polyester has improved infrared heat-up times.

Claim 13

A high clarity, low haze polyester, according to claim 7, wherein said polyester is in the form of a high clarity article.

Claim 14

A high clarity, low haze polyester, according to claim 10, wherein said high clarity article is a beverage bottle.

Claim 15

A high clarity, low haze polyester, according to claim 2, wherein said polyester contains from about 70 to about 350 parts by weight of an elemental antimony in the form of an antimony compound per one million parts of said polyester, a low amount by weight of a phosphorus compound, and a bluing agent containing an elemental metal, the amount of elemental phosphorus in said phorphorus compound ranging from about 0.35 to about 2.5 parts by weight for each part by weight of elemental metal in said bluing agent, and wherein the amount of said elemental phosphorus in said phorphorus compound ranges from about 5 to about 60 parts by weight per million parts by weight of said polyester.

Claim 16

A high clarity, low haze polyester, according to claim 12, wherein said bluing agent is a cobalt compound, and wherein the amount of said elemental cobalt in said compound ranges from about 5 to about 50 parts by weight per million parts by weight of said polyester, and wherein said phosphorus compound is a phosphate.

Claim 17

A high clarity, low haze polyester, according to claim 13, wherein the amount of said elemental antimony in said antimony compound ranges from about 70 parts to about 250 parts of antimony per million parts by weight of said polyester, wherein the amount of said elemental cobalt is in said cobalt compound ranges from about 5 to about 30 parts by weight per million parts by weight of said polyester, wherein the amount of said elemental phosphorus in said phorphorus compound ranges from about 10 to about 50 parts by weight per million parts by weight of said polyester, and wherein the ratio of said elemental phosphorus to said elemental cobalt ranges from about 0.4 to about 1.3 parts by weight.

Claim 18

A high clarity, low haze polyester, according to claim 14, wherein said polyester is made from the reaction of a dicarboxylic acid and a polyhydric alcohol compound, said dicarboxylic acid selected from the group consisting of an alkyl dicarboxylic acid having from 2 to 40 carbon atoms, and an aryl or an alkyl substituted aryl dicarboxylic acid containing from 8 to 16 carbon atoms, and combinations thereof, and wherein said polyhydric alcohol is selected from the group consisting of glycols having from 2 to 20 carbon atoms, glycol ethers having from 4 to 12 carbon atoms, and combinations thereof.

Claim 19

A high clarity, low haze polyester, according to claim 15, wherein said cobalt compound is cobalt acetate, wherein said phosphorus compound is phosphoric acid, and wherein said antimony compound is antimony glycolate, wherein said dicarboxylic acid is terephthalic acid, and wherein said glycol is ethylene glycol, wherein the amount of said elemental antimony is from about 120 to about 210 parts per million, wherein the amount of said elemental cobalt is from about 8 to about 20 parts per million, and wherein the amount of said elemental phosphorus is from about 8 to about 20 parts per million.

Claim 20

A high clarity, low haze polyester, according to claim 12, wherein said polyester is in the form of a high clarity article.

Claim 21

A high clarity, low haze polyester, according to claim 14, wherein said polyester is in the form of a high clarity article.

Claim 22

A high clarity, low haze polyester, according to claim 16, wherein said polyester is in the form of a high clarity article.

Claim 23

A high clarity, low haze polyester, according to claim 17, wherein said high clarity article is in the form of a beverage bottle.

Claim 24

A high clarity, low haze polyester, according to claim 4, wherein the amount of said carbon black present is from about 1.0 to about 5.5 parts by weight per million parts by weight of said polyester.

Claim 25

A high clarity, low haze polyester, according to claim 1, wherein said polyester is made by the reaction of a dicarboxylic acid having from 2 to 40 carbon atoms, or an ester thereof, with a diol having from 2 to 20 carbon atoms.

Claim 26

A high clarity, low haze polyester, according to claim 22, wherein said high clarity, low haze polyester has a Hunter haze value of less than 3.0 as measured on a sample having a cross-sectional thickness of about 0.028 inch and wherein the amount of said carbon black present is from about 1.0 to about 5.5 parts by weight per million parts by weight of said polyester.

Claim 27

A high clarity, low haze polyester, according to claim 23, wherein said polyester is poly(ethylene terephthalate).

Claim 28

A high clarity, low haze polyester, according to claim 24, wherein the amount of said carbon black present is from about 1.5 to about 3.5 parts by weight per million parts by weight of said polyester.

Claim 29

A high clarity, low haze polyester, according to claim 5, wherein the amount of said carbon black present is from about 1.0 to about 5.5 parts by weight per million parts by weight of said polyester.

Claim 30

A high clarity, low haze polyester, according to claim 26, wherein said polyester is poly(ethylene terephthalate).

Claim 31

A high clarity, low haze polyester, according to claim 27, wherein said polyester is in the form of a beverage bottle.

Claim 32

A high clarity, low haze polyester, according to claim 28, wherein the amount of said carbon black present is from about 1.5 to about 3.5 parts by weight per million parts by weight of said polyester.

Claim 33

A high clarity, low haze polyester, according to claim 3, wherein said polyester is made by the reaction of a dicarboxylic acid having from 2 to 40 carbon atoms, or an ester thereof, with a diol having from 2 to 20 carbon atoms.

Claim 34

A high clarity, low haze polyester, according to claim 30, wherein the amount of said carbon black present is from about 1.0 to about 5.5 parts by weight per million parts by weight of said polyester.

Claim 35

A high clarity, low haze polyester, according to claim 31, wherein said polyester is poly(ethylene terephthalate).

Claim 36

A high clarity, low haze polyester, according to claim 32, wherein the amount of said carbon black present is from about 1.5 to about 3.5 parts by weight per million parts by weight of said polyester.

Claim 37

A high clarity, low haze polyester, according to claim 33, wherein said high clarity, low haze polyester has a Hunter haze value of less than 2.5 as measured on a sample having a cross-sectional thickness of about 0.028 inch.

Claim 38

A high clarity, low haze polyester, according to claim 33, wherein said polyester is in the form of a beverage bottle.