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US4363892A Expired / Lapsed US ⏱️ 0.0 years remaining

Thermoplastic copolyester elastomers modified with salts of phenolic compounds

Assignee: EIDP Inc
•
Filing: 1982-03-05
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Granted: 1982-12-14
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Expires: 2002-03-05
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Abstract

Abstract A thermoplastic copolyester elastomer composition comprising a copolyester consisting essentially of a multiplicity of long-chain ester units and short-chain ester units joined through ester linkages, said long-chain ester units being represented by the formula (Ia), formula (Ib) and combinations thereof ##STR1## and said short-chain ester units being represented by formula (II) ##STR2## where G is a divalent radical remaining after the removal of hydroxyl groups from at least one long-chain glycol having a melting point of less than about 55° C. and a number average molecular weight of about 400-4000, R is a divalent radical remaining after the removal of carboxyl groups from at least one dicarboxylic acid having a molecular weight less than about 300, R' is a divalent radical remaining after the removal of carboxyl groups from dimer acid, D is a divalent radical remaining after the removal of hydroxyl groups from at least one aliphatic diol having a molecular weight less than about 250, with the proviso that at least about 70 mole percent of the D radicals are either ethylene radicals or 1,4-butylene radicals and at least about 70 mole percent of the R radicals are 1,4-phenylene radicals, said short-chain ester units being present in an amount of about 15-95 percent by weight of said copolyester; and about 0.1-10 percent by weight, based on the weight of the total composition, of at least one alkali metal salt of a phenolic compound having a pK a 25° greater than 5 and an equivalent weight of less than about 300 per phenolic hydroxyl group.

Inventors

  • 👤 Albert L. Shain

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 19:53
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/138

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 264 words
A thermoplastic copolyester elastomer composition comprising (A) a copolyester consisting essentially of a multiplicity of long-chain ester units and short-chain ester units joined through ester linkages, said long-chain ester units selected from the group consisting of units represented by the formula (Ia), formula (Ib) and combinations thereof ##STR5## and said short-chain ester units being represented by formula (II) ##STR6## where G is a divalent radical remaining after the removal of hydroxyl groups from at least one long-chain glycol having a melting point of less than about 55° C. and a number average molecular weight of about 400-4000, R is a divalent radical remaining after the removal of carboxyl groups from at least one dicarboxylic acid having a molecular weight less than about 300, R' is a divalent radical remaining after the removal of carboxyl groups from dimer acid, D is a divalent radical remaining after the removal of hydroxyl groups from at least one aliphatic diol having a molecular weight less than about 250, with the proviso that at least about 70 mole percent of the D radicals are either ethylene radicals or 1,4-butylene radicals and at least about 70 mole percent of the R radicals are 1,4-phenylene radicals, said short-chain ester units being present in an amount of about 15-95 percent by weight of said copolyester; and (B) about 0.1-10 percent by weight, based on the weight of the total composition, of at least one alkali metal salt of a phenolic compound having a pK a 25° greater than 5 and an equivalent weight of less than about 300 per phenolic hydroxyl group.
Claim 2
Dependent Claim 264 words
A thermoplastic copolyester elastomer composition comprising (A) a copolyester consisting essentially of a multiplicity of long-chain ester units and short-chain ester units joined through ester linkages, said long-chain ester units selected from the group consisting of units represented by the formula (Ia), formula (Ib) and combinations thereof ##STR5## and said short-chain ester units being represented by formula (II) ##STR6## where G is a divalent radical remaining after the removal of hydroxyl groups from at least one long-chain glycol having a melting point of less than about 55° C. and a number average molecular weight of about 400-4000, R is a divalent radical remaining after the removal of carboxyl groups from at least one dicarboxylic acid having a molecular weight less than about 300, R' is a divalent radical remaining after the removal of carboxyl groups from dimer acid, D is a divalent radical remaining after the removal of hydroxyl groups from at least one aliphatic diol having a molecular weight less than about 250, with the proviso that at least about 70 mole percent of the D radicals are either ethylene radicals or 1,4-butylene radicals and at least about 70 mole percent of the R radicals are 1,4-phenylene radicals, said short-chain ester units being present in an amount of about 15-95 percent by weight of said copolyester; and (B) about 0.1-10 percent by weight, based on the weight of the total composition, of at least one alkali metal salt of a phenolic compound having a pK a 25° greater than 5 and an equivalent weight of less than about 300 per phenolic hydroxyl group.
Claim 3
Dependent Claim 15 words
A composition of claim 1 wherein the phenolic salt is a salt of polyhydric phenol.
Claim 4
Dependent Claim 24 words
A composition of claims 1 or 2 wherein the phenolic salt has an equivalent weight of less than about 150 per phenolic hydroxyl group.
Claim 5
Dependent Claim 25 words
A composition of claim 1 or 2 wherein the phenolic salt is a salt of resorcinol, bisphenol A, phloroglucinol, resorcinol sulfide or a phenol-formaldehyde resin.
Claim 6
Dependent Claim 15 words
A composition of claim 1 or 2 where the phenolic salt is a sodium salt.
Claim 7
Dependent Claim 12 words
A composition of claim 1 containing about 1-5 weight percent phenolic salt.
Claim 8
Dependent Claim 16 words
A composition of claim 1 wherein said long-chain ester units are represented by the Formula ##STR7##
Claim 9
Dependent Claim 17 words
A composition of claim 1 wherein said long chain ester units are represented by the Formula ##STR8##
Claim 10
Dependent Claim 54 words
A composition of claim 7 where G is a divalent radical obtained by removing the hydroxyl groups from poly(tetramethylene oxide) glycol having a number average molecular weight of about 600-2000 or ethylene oxide-capped poly(propylene oxide) glycol having a number average molecular weight of about 1500-2800 and an ethylene oxide content of 15-35% by weight.

References Cited (Backward Citations)

US3644295A Cited
US3651014A Cited
US3766146A Cited
US3763109A Cited
US3957706A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1985-12-13 1986-06-14 1986-12-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1989-12-13 1990-06-14 1990-12-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1993-12-13 1994-06-14 1994-12-14 $7700.00 Window Closed / Lapsed

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