US4499219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized thermoplastic polyester moulding composition
Assignee: Novartis AG
•
Filing: 1983-11-21
•
Granted: 1985-02-12
•
Expires: 2003-11-21
Abstract
Abstract Moulding compositions based on thermoplastic polyesters can be effectively protected against thermal degradation, if they contain, as a first stabilizer, a polyepoxide compound and, as a second stabilizer, a bisoxazoline or a dicarboxylic acid imide or amide.
Inventors
- 👤 Lothar Buxbaum
- 👤 Franz Breitenfellner
- 👤 Thomas Kainmuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:53
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20; C08K5/34; C08K5/35; C08L; C08L63/00; C08L67/00; C08L67/04; C08L79/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
198 words
A moulding composition, based on a thermoplastic polyester, which comprises effective amounts of (a) as a first stabiliser, a polyepoxide compound, having on average more than one epoxide group per molecule, and (b) at least one second stabiliser selected from the group consisting of the bisoxazolines of the formula I ##STR14## and the dicarboxylic acid imides and amides of the formula II ##STR15## in which R is alkylene, cycloalkylene, unsubstituted arylene or arylene substituted by halogen, R 1 and R 2 independently of one another are a hydrogen atom, aryl, cycloalkyl or alkyl, R 3 is alkyl, cycloalkyl, or aryl or aralkyl which are unsubstituted or substituted by alkyl or halogen, and R 4 is acyl, or R 3 and R 4 together are a radical of the formula --C n H 2n CO--, in which n is a number from 3 to 11, or R 3 and R 4 together are a radical of the formula ##STR16## in which X is ethylene or ethenylene which are unsubstituted or substituted by alkyl, or is a carbocyclic radical which is unsubstituted or substituted by alkyl or halogen and to which both the carbonyl groups are bonded in the ortho-position.
Claim 2
Dependent Claim
198 words
A moulding composition, based on a thermoplastic polyester, which comprises effective amounts of (a) as a first stabiliser, a polyepoxide compound, having on average more than one epoxide group per molecule, and (b) at least one second stabiliser selected from the group consisting of the bisoxazolines of the formula I ##STR14## and the dicarboxylic acid imides and amides of the formula II ##STR15## in which R is alkylene, cycloalkylene, unsubstituted arylene or arylene substituted by halogen, R 1 and R 2 independently of one another are a hydrogen atom, aryl, cycloalkyl or alkyl, R 3 is alkyl, cycloalkyl, or aryl or aralkyl which are unsubstituted or substituted by alkyl or halogen, and R 4 is acyl, or R 3 and R 4 together are a radical of the formula --C n H 2n CO--, in which n is a number from 3 to 11, or R 3 and R 4 together are a radical of the formula ##STR16## in which X is ethylene or ethenylene which are unsubstituted or substituted by alkyl, or is a carbocyclic radical which is unsubstituted or substituted by alkyl or halogen and to which both the carbonyl groups are bonded in the ortho-position.
Claim 3
Dependent Claim
22 words
A moulding composition according to claim 1, wherein the polyester is a polyalkylene terephthalate or a copolyester based on a polyalkylene terephthalate.
Claim 4
Dependent Claim
29 words
A moulding composition according to claim 1, which contains the first and the second stabiliser each in a quantity of 0.01 to 10% by weight, relative to the polyester.
Claim 5
Dependent Claim
23 words
A moulding composition according to claim 1, wherein the polyepoxide compound is a polyepoxide compound based on bisphenols or phenol or cresol novolaks.
Claim 6
Dependent Claim
38 words
A moulding composition according to claim 1, wherein in the formulae I and II, R is an alkylene radical containing 2 to 12 C atoms, a cycloalkylene radical containing 5 to 7 ring C atoms, phenylene or naphthylene.
Claim 7
Dependent Claim
33 words
A moulding composition according to claim 1, wherein R 1 and R 2 independently of one another are a hydrogen atom, phenyl, cyclohexyl or an alkyl group having 1 to 6 carbon atoms.
Claim 8
Dependent Claim
163 words
A moulding composition according to claim 1, wherein alkyl radicals R 3 contain 1 to 12 C atoms, cycloalkyl radicals R 3 contain 5 to 7 ring C atoms, unsubstituted aryl radicals R 3 contain 6 to 12 C atoms, and unsubstituted aralkyl radicals contain 7 to 12 C atoms, alkyl substituents in R 3 contain 1 to 6 C atoms, and halogen substituents in R 3 are chlorine or bromine, acyl radicals R 4 contain 2 to 18 C atoms, n in the formula --C n H 2n CO-- is a number from 3 to 8, X in the formula ##STR17## is ethylene which is unsubstituted or monosubstituted or disubstituted by alkyl groups having 1 to 6 C atoms, ethenylene which is unsubstituted or monosubstituted or disubstituted by alkyl groups having 1 to 6 C atoms, or is cyclopentylene, cyclohexylene, cyclohexenylene, phenylene or naphthylene which are unsubstituted or substituted by alkyl having 1 to 6 C atoms or by chlorine or bromine.
Claim 9
Dependent Claim
47 words
A moulding composition according to claim 1, which contains, as the second stabiliser, a bisoxazoline of formula I wherein R 1 and R 2 are hydrogen atoms and R represents --CH 2 ) r -- with r being 2 to 10, 1,3- or 1,4-phenylene, 1,3- or 1,4-cyclohexylene.
Claim 10
Dependent Claim
108 words
A moulding composition according to claim 1, which contains, as the second stabiliser, a dicarboxylic acid imide or amide of the formula II wherein R 3 is alkyl having 1 to 4 carbon atoms, cyclohexyl, phenyl or naphthyl, and R 4 is acetyl or benzoyl, or R 3 and R 4 together are a radical of the formula --C n H 2n CO-- in which n is a number from 3 to 8, or R 3 and R 4 together are a radical of the formula ##STR18## in which X is unsubstituted ethylene or ethenylene or 1,2-phenylene, unsubstituted or substituted by 1 to 4 chlorine or bromine atoms.
Claim 11
Dependent Claim
59 words
A moulding composition according to claim 1, which contains, as the second stabiliser, a dicarboxylic acid amide of formula II wherein R represents --(CH 2 ) r -- with r being 2 to 10, 1,3- or 1,4-phenylene, 1,3- oder 1,4-cyclohexylene, R 3 is alkyl having 1 to 4 carbon atoms or phenyl and R 4 is acetyl or benzoyl.
Claim 12
Dependent Claim
82 words
A moulding composition according to claim 1, which contains, as the second stabiliser, a dicarboxylic acid imide of formula II wherein R represents --(CH 2 ) r -- with r being 2 to 10, 1,3- or 1,4-phenylene, 1,3- or 1,4-cyclohexylene, and R 3 and R 4 together are a radical of the formula --C n H 2n CO-- in which n is a number from 3 to 5 or R 3 and R 4 together are a radical of the formula ##STR19##
Claim 13
Dependent Claim
23 words
A moulding composition according to claim 1, which contains a bisoxazoline of the formula ##STR20## as the second stabiliser of the formula I.
Claim 14
Dependent Claim
24 words
A moulding composition according to claim 1, which contains an imide compound of the formula ##STR21## as the second stabiliser of the formula II.
Claim 15
Dependent Claim
24 words
A moulding composition according to claim 1, which contains an imide compound of the formula ##STR22## as the second stabiliser of the formula II.
Claim 16
Dependent Claim
24 words
A moulding composition according to claim 1, which contains an imide compound of the formula ##STR23## as the second stabiliser of the formula II.
References Cited (Backward Citations)
US4010219A
Cited
US3959215A
Cited
JPS50119041A
Cited
GB1525331A
Cited
US4080360A
Cited
GB1564214A
Cited
JPS5638346A
Cited
JPS56120757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |