US2009093573A1PendingUtilityA1
Polyester Compositions Which Comprise Cyclobutanediol and at Least One Phosphorus Compound
Est. expiryMar 2, 2025(expired)· nominal 20-yr term from priority
Inventors:Ted Calvin GermrothGary Wayne ConnellEmmett Dudley CrawfordThomas Joseph PecoriniDouglas Stephens McwilliamsBenjamin Fredrick BartonDamon Bryan Shackelford
G02B 1/14C08J 7/0427Y10T428/1352Y10T428/31663Y10T428/162C08J 5/18B01D 61/30C08J 2367/02G02B 1/10A47F 5/00B65D 1/0207E01F 8/0005E04D 13/03B32B 17/10018B65D 23/10C08J 2483/00B65D 25/00C08J 2367/00Y10T428/24479C08L 69/00Y10T428/24107C08K 2201/014B29L 2031/7542Y10T428/31504Y10T428/24942C08L 67/02Y10T428/161B32B 27/36C08G 63/199G02F 1/133606A61M 1/16C08J 7/123C09D 167/02Y10T428/31507C08K 5/521B65D 43/00G02B 5/3083Y10T428/139C08K 3/32C08L 101/00Y10T428/31786B29K 2067/00Y10T428/1397B29C 49/0006C08L 67/03C08G 63/183G02B 1/04A01G 9/1438Y02A40/25
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Claims
Abstract
Described as one aspect of the invention are polyester compositions containing: (I) at least one polyester which comprises: (a) a dicarboxylic acid component comprising: (i) 70 to 100 mole % of terephthalic acid residues; (ii) 0 to 30 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms; and (iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms; and (b) a glycol component comprising: (i) 1 to 99 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and (ii) 1 to 99 mole % of cyclohexanedimethanol residues; and (II) at least one thermal stabilizer chosen from at least one phosphorus compound, reaction products thereof, and mixtures thereof; wherein the total mole % of the dicarboxylic acid component is 100 mole %, and wherein the total mole % of the glycol component is 100 mole %; wherein the inherent viscosity of the polyester is from 0.35 to 1.2 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.25 g/50 ml at 25° C.
Claims
exact text as granted — not AI-modified1 . A polyester composition comprising:
(I) at least one polyester which comprises:
(a) a dicarboxylic acid component comprising:
(i) 80 to 100 mole % of terephthalic acid residues;
(ii) 0 to 20 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms; and
(iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms; and
(b) a glycol component comprising:
(i) 15 to 60 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and
(ii) 40 to 85 mole % of cyclohexanedimethanol residues; and
(II) at least one thermal stabilizer chosen from at least one phosphorus compound, reaction products thereof, and mixtures thereof; and
wherein the weight ratio of total tin atoms to total phosphorus atoms in the final polyester is 2-10:1;
wherein the total mole % of the dicarboxylic acid component is 100 mole %,
wherein the total mole % of the glycol component is 100 mole %;
wherein the inherent viscosity of the polyester is from 0.55 to 0.75 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.25 g/50 ml at 25° C.; and
wherein the polyester has a Tg from 100 to 160° C.
2 . The polyester composition of claim 1 , wherein at least one thermal stabilizer is chosen from at least one of the following: diphosphites, salts of phosphoric acid, phosphine oxides, and mixed aryl alkyl phosphites.
3 . The polyester composition of claim 2 , wherein at least one thermal stabilizer is chosen from at least one of the following: diphosphite.
4 . The polyester composition of claim 3 , wherein at least one thermal stabilizer is chosen from at least one diphosphite which contains a 2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane structure.
5 . The polyester composition of claim 2 wherein at least one thermal stabilizer is chosen from at least one phosphine oxide.
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7 . The polyester composition of claim 2 wherein at least one thermal stabilizer is chosen from at least one mixed alkyl aryl phosphite.
8 . The polyester composition of claim 7 wherein at least one thermal stabilizer is bis(2,4-dicumylphenyl)pentaerythritol diphosphite
9 . The polyester composition of claim 1 , wherein at least one thermal stabilizer is present in the amount of about 1 ppm to about 5000 ppm based on the total weight of the polyester.
10 . The polyester composition of claim 1 , wherein at least one thermal stabilizer is present in the amount of about 50 ppm to about 3000 ppm based on the total weight of the polyester.
11 . The polyester composition of claim 1 , wherein at least one thermal stabilizer is present in the amount of about 50 ppm to about 2500 ppm based on the total weight of the polyester.
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26 . The polyester composition of claim 1 wherein the polyester has a Tg from 100 to 140° C.
27 . The polyester composition of claim 26 wherein the polyester has a Tg from 100 to 130° C.
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44 . The polyester composition of claim 1 wherein the glycol component of the polyester comprises 15 to 30 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues and 70 to 85 mole % cyclohexanedimethanol residues.
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48 . The polyester composition of claim 1 wherein the glycol component of the polyester comprises 40 to 60 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues and 40 to 60 mole % cyclohexanedimethanol residues.
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57 . The polyester composition of claim 1 wherein the dicarboxylic acid component of the polyester comprises 90 to 100 mole % of terephthalic acid or an ester thereof.
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59 . The polyester composition of claim 1 wherein the 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues of the polyester are pure cis, pure trans, or a mixture thereof.
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61 . The polyester composition of claim 1 comprising at least one polymer of poly(etherimides), polyphenylene oxides, poly(phenylene oxide)/polystyrene blends, polystyrene resins, polyphenylene sulfides, polyphenylene sulfide/sulfones, poly(ester-carbonates), polycarbonates, polysulfones; polysulfone ethers, poly(ether-ketones), polyesters other than those of claim 1 , and mixtures thereof.
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63 . The polyester composition of claim 1 wherein the polyester composition comprises a branching agent for the polyester.
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67 . The polyester composition of claim 1 wherein the polyester composition which does not contain polycarbonate including bisphenol A polycarbonate.
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72 . The polyester composition of claim 1 wherein the polyester composition comprises at least one additive of colorants, mold release agents, thermal stabilizers other than those described in claim 1 , plasticizers, nucleating agents, UV stabilizers, glass fiber, carbon fiber, fillers, impact modifiers, or a mixture thereof.
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90 . A polyester composition comprising:
(I) at least one polyester which comprises:
(a) a dicarboxylic acid component comprising:
(i) 80 to 100 mole % of terephthalic acid residues;
(ii) 0 to 20 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms; and
(iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms; and
(b) a glycol component comprising:
(i) from 15 to 40 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and
(ii) from 60 to 86 mole % cyclohexanedimethanol residues; and
(II) at least one thermal stabilizer chosen from at least one phosphorus compound, reaction products thereof, and mixtures thereof;
wherein the weight ratio of total tin atoms to total phosphorus atoms in the final polyester is 2-10:1;
wherein the total mole % of the dicarboxylic acid component is 100 mole %, and the total mole % of the glycol component is 100 mole %; and
wherein the inherent viscosity of the polyester is from 0.55 to 0.75 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.25 g/50 ml at 25° C.; and wherein the polyester has a Tg from 100 to 140° C.
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99 . The polyester composition of claim 1 , wherein at least one thermal stabilizer is present in the amount of about 1 ppm to about 100 ppm based on the total weight of the polyester.
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109 . The polyester composition of claim 1 wherein the glycol component of the polyester comprises 20 to 40 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues and 60 to 80 mole % cyclohexanedimethanol residues.
110 . The polyester composition of claim 1 wherein the glycol component of the polyester comprises 30 to 40 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues and 60 to 70 mole % cyclohexanedimethanol residues.
111 . The polyester composition of claim 1 wherein the glycol component of the polyester comprises 20 to 30 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues and 70 to 80 mole % cyclohexanedimethanol residues.
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113 . The polyester composition of claim 1 wherein the glycol component of the polyester comprises 30 to 35 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues and 65 to 70 mole % cyclohexanedimethanol residues.
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117 . The polyester composition of claim 1 wherein the glycol component of the polyester comprises 0 to 10 mole % ethylene glycol residues.
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