US4208489A — Polycarbonate molding compositions with improved …

Claim 1

Independent Claim 175 words

A polycarbonate molding composition, comprising a high molecular weight thermoplastic polycarbonate, 0.02 to 2% by weight, based on the weight of the polycarbonate, of an alkali metal salt of an organic acid selected from the group consisting of sulphonic, phosphonic and carboxylic acids or an alkali metal salt of an inorganic acid having a solubility in water at 20° C. of less than 2 g per liter of water and 0.02 to 2% by weight, based on the weight of the polycarbonate, of a tetrahalogenophthalimide of the general formula (I) or (II) or mixtures thereof ##STR3## wherein R denotes H or C 1 to C 4 alkyl, C 6 H 5 , C 10 H 7 , C 6 H 4 X, C 6 H 3 X 2 or C 6 H 2 X 3 , in which X denotes a fluorine, chlorine or bromine atom, and R' denotes a single bond or a C 2 to C 4 alkylene, C 6 H 4 or p-diphenylene radical and Z denotes a chlorine or bromine atom.

Claim 2

Dependent Claim 175 words

A polycarbonate molding composition, comprising a high molecular weight thermoplastic polycarbonate, 0.02 to 2% by weight, based on the weight of the polycarbonate, of an alkali metal salt of an organic acid selected from the group consisting of sulphonic, phosphonic and carboxylic acids or an alkali metal salt of an inorganic acid having a solubility in water at 20° C. of less than 2 g per liter of water and 0.02 to 2% by weight, based on the weight of the polycarbonate, of a tetrahalogenophthalimide of the general formula (I) or (II) or mixtures thereof ##STR3## wherein R denotes H or C 1 to C 4 alkyl, C 6 H 5 , C 10 H 7 , C 6 H 4 X, C 6 H 3 X 2 or C 6 H 2 X 3 , in which X denotes a fluorine, chlorine or bromine atom, and R' denotes a single bond or a C 2 to C 4 alkylene, C 6 H 4 or p-diphenylene radical and Z denotes a chlorine or bromine atom.

Claim 3

Dependent Claim 30 words

The polycarbonate molding composition according to claim 1, wherein a polytetrafluoroethylene is present in an amount of 0.05 to 0.6% by weight relative to the total weight of the polycarbonate.

Claim 4

Dependent Claim 30 words

The polycarbonate molding composition according to claim 2, wherein the polytetrafluoroethylene is present in an amount of 0.1 to 0.3% by weight relative to the total weight of the polycarbonate.

Claim 5

Dependent Claim 29 words

The polycarbonate molding composition according to claim 1, wherein the tetrahalogenophthalimide is present in an amount of 0.05 to 1% by weight, relative to the total weight of polycarbonate.

Claim 6

Dependent Claim 20 words

The polycarbonate molding composition according to claim 1, wherein the tetrahalogenophthalimide is N-phenyl-tetrachlorophthalimide, N,N'-ethylene-di-tetra-chlorophthalimide or N-(tetrachlorophthalimido)-tetrachlorophthalimide, or a mixture thereof.

Claim 7

Dependent Claim 16 words

The polycarbonate molding composition according to claim 1, wherein the tetrahalogenophthalimide is N-methyltetrachlorophthalimide, tetrachlorophthalimide or tetrabromophthalimide.

Claim 8

Dependent Claim 37 words

The polycarbonate molding composition according to claim 1, wherein the alkali metal salt of the organic or inorganic acid is present in an amount of 0.05 to 1% by weight, relative to the total weight of polycarbonate.

Claim 9

Dependent Claim 49 words

The polycarbonate molding composition according to claim 7, wherein the alkali metal salt of the organic or inorganic acid is selected from the group consisting of sodium or potassium 2,5-dichlorobenzenesulphonate, sodium or potassium 2,4,5-trichlorobenzenesulphonate, potassium hexafluoroaluminate, potassium pyrophosphate, potassium methylphosphate, sodium hexafluoroaluminate, lithium phenylphosphonate, and mixtures of these salts.

Claim 10

Dependent Claim 196 words

A polycarbonate molding composition, which comprises: (a) a high molecular weight thermoplastic aromatic polycarbonate; (b) 0.02 to 2% by weight, based on the weight of the polycarbonate, of an alkali metal salt of an organic acid selected from the group consisting of sulphonic, phosphonic and carboxylic acids or an alkali metal salt of an inorganic acid having a solubility in water at 20° C. of less than 2 g per liter of water; (c) 0.02 to 2% by weight, based on the weight of the polycarbonate, of a tetrahalogenophthalimide of the general formula (I) or (II) or mixtures thereof ##STR4## wherein R denotes H, a C 1 to C 4 alkyl, C 6 H 5 , C 10 H 7 , C 6 H 4 X, C 6 H 3 X 2 or C 6 H 2 X 3 group, in which X denotes a fluorine, chlorine or bromine atom, and R' denotes a single bond or a C 2 to C 4 alkylene, C 6 H 4 or p-diphenylene radical and Z denotes a chlorine or bromine atom; and (d) 0.05 to 0.6% by weight, based on the weight of the polycarbonate, of a polytetrafluoroethylene.

Claim 11

Dependent Claim 196 words

A polycarbonate molding composition, which comprises: (a) a high molecular weight thermoplastic aromatic polycarbonate; (b) 0.02 to 2% by weight, based on the weight of the polycarbonate, of an alkali metal salt of an organic acid selected from the group consisting of sulphonic, phosphonic and carboxylic acids or an alkali metal salt of an inorganic acid having a solubility in water at 20° C. of less than 2 g per liter of water; (c) 0.02 to 2% by weight, based on the weight of the polycarbonate, of a tetrahalogenophthalimide of the general formula (I) or (II) or mixtures thereof ##STR4## wherein R denotes H, a C 1 to C 4 alkyl, C 6 H 5 , C 10 H 7 , C 6 H 4 X, C 6 H 3 X 2 or C 6 H 2 X 3 group, in which X denotes a fluorine, chlorine or bromine atom, and R' denotes a single bond or a C 2 to C 4 alkylene, C 6 H 4 or p-diphenylene radical and Z denotes a chlorine or bromine atom; and (d) 0.05 to 0.6% by weight, based on the weight of the polycarbonate, of a polytetrafluoroethylene.

Claim 12

Dependent Claim 27 words

The polycarbonate molding composition according to claim 9, wherein the polytetrafluoroethylene has a weight-average molecular weight M w between about 10 5 and about 10 6 .

Claim 13

Dependent Claim 48 words

The polycarbonate molding composition according to claim 9, wherein the thermoplastic aromatic polycarbonate has a weight-average molecular weight M w between about 20,000 and about 80,000 determined by measurements of the relative viscosity in CH 2 Cl 2 at 25° C. and a concentration of 0.5% by weight.

Claim 14

Dependent Claim 33 words

The polycarbonate molding composition according to claim 9, further comprising members selected from the group consisting of a pigment, a mold release agent, a heat stabilizer, an ultraviolet light stabilizer, and a filler.

Claim 15

Dependent Claim 180 words

In a polycarbonate molding composition containing a high molecular weight, thermoplastic, aromatic polycarbonate and 0.02 to 2% by weight, based on the weight of the polycarbonate, of an alkali metal salt of an organic acid selected from the group consisting of sulphonic, phosphonic and carboxylic acids or an alkali metal salt of an inorganic acid having a solubility in water at 20° C. of less than 2 g per liter of water, the improvement comprising: (a) 0.02 to 2% by weight, based on the weight of the polycarbonate, of a tetrahalogenophthalimide of the general formula (I) or (II) ##STR5## wherein R denotes H, a C 1 to C 4 alkyl, C 6 H 5 , C 10 H 7 , C 6 H 4 X, C 6 H 3 X 2 or C 6 H 2 X 3 group, in which X denotes a fluorine, chlorine or bromine atom, R' denotes a single bond or a C 2 to C 4 alkylene, C 6 H 4 or p-diphenylene radical and Z denotes a chlorine or bromine atom or mixtures thereof.

Claim 16

Dependent Claim 180 words

In a polycarbonate molding composition containing a high molecular weight, thermoplastic, aromatic polycarbonate and 0.02 to 2% by weight, based on the weight of the polycarbonate, of an alkali metal salt of an organic acid selected from the group consisting of sulphonic, phosphonic and carboxylic acids or an alkali metal salt of an inorganic acid having a solubility in water at 20° C. of less than 2 g per liter of water, the improvement comprising: (a) 0.02 to 2% by weight, based on the weight of the polycarbonate, of a tetrahalogenophthalimide of the general formula (I) or (II) ##STR5## wherein R denotes H, a C 1 to C 4 alkyl, C 6 H 5 , C 10 H 7 , C 6 H 4 X, C 6 H 3 X 2 or C 6 H 2 X 3 group, in which X denotes a fluorine, chlorine or bromine atom, R' denotes a single bond or a C 2 to C 4 alkylene, C 6 H 4 or p-diphenylene radical and Z denotes a chlorine or bromine atom or mixtures thereof.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1983-06-17	1983-12-17	1984-06-17	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1987-06-17	1987-12-17	1988-06-17	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1991-06-17	1991-12-17	1992-06-17	$7700.00	Window Closed / Lapsed

Polycarbonate molding compositions with improved flame-repellency

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag