US4895893A — Heat-resistant resin compositions, and heat-resis…

Claim 1

Independent Claim 266 words

A resin composition comprising: (A) 100 parts by weight of a poly(arylene sulfide) of a substantially linear structure containing 50% by weight or higher of recurring units of the formula: ##STR19## having a logarithmic viscosity number of 0.1 to 1.0 dl/g in a 1-chloronaphthalene solution at a polymer solution of 0.4 g/dl and a temperature of 208° C.; (B) from 0.01 to less than 25 parts by weight of a melt-stable poly(arylene thioether-ketone) having predominant recurring units of the formula: ##STR20## wherein the --CO-- and --S-- are in the para position to each other; and having the following physical properties (a)-(c): (a) melting point, Tm being 310°-380° C.; (b) residual melt crystallization enthalpy, ΔHmc (420° C./10 min) being at least 10 J/g, and melt crystallization temperature, Tmc (420° C./10 min) being at least 210° C., wherein Δ Hmc (420° C./10 min) and Tmc (420° C./10 min) are determined by a differential scanning calorimeter at a cooling rate of 10° C./min after the poly(arylene thioether-ketone) is held at 50° C. for 5 minutes in an inert gas atmosphere, heated to 420° C. at a rate of 75° C./min, and then held at 420° C. for 10 minutes; and (c) reduced viscosity being 0.2 to 2 dl/g as determined by viscosity measurement at 25° C. and a polymer concentration of 0.5 g/dl in 98 wt. % sulfuric acid; and (C) at least one filler selected from fibrous fillers and inorganic fillers in a proportion of 0 to 400 parts by weight per 100 parts by weight of the resin component comprising said poly(arylene sulfide) and said poly(arylene thioether-ketone).

Claim 2

Dependent Claim 266 words

A resin composition comprising: (A) 100 parts by weight of a poly(arylene sulfide) of a substantially linear structure containing 50% by weight or higher of recurring units of the formula: ##STR19## having a logarithmic viscosity number of 0.1 to 1.0 dl/g in a 1-chloronaphthalene solution at a polymer solution of 0.4 g/dl and a temperature of 208° C.; (B) from 0.01 to less than 25 parts by weight of a melt-stable poly(arylene thioether-ketone) having predominant recurring units of the formula: ##STR20## wherein the --CO-- and --S-- are in the para position to each other; and having the following physical properties (a)-(c): (a) melting point, Tm being 310°-380° C.; (b) residual melt crystallization enthalpy, ΔHmc (420° C./10 min) being at least 10 J/g, and melt crystallization temperature, Tmc (420° C./10 min) being at least 210° C., wherein Δ Hmc (420° C./10 min) and Tmc (420° C./10 min) are determined by a differential scanning calorimeter at a cooling rate of 10° C./min after the poly(arylene thioether-ketone) is held at 50° C. for 5 minutes in an inert gas atmosphere, heated to 420° C. at a rate of 75° C./min, and then held at 420° C. for 10 minutes; and (c) reduced viscosity being 0.2 to 2 dl/g as determined by viscosity measurement at 25° C. and a polymer concentration of 0.5 g/dl in 98 wt. % sulfuric acid; and (C) at least one filler selected from fibrous fillers and inorganic fillers in a proportion of 0 to 400 parts by weight per 100 parts by weight of the resin component comprising said poly(arylene sulfide) and said poly(arylene thioether-ketone).

Claim 3

Dependent Claim 42 words

The composition as claimed in claim 1, wherein said poly(arylene sulfide) is a block copolymer consisting of 70 to 95 mol % of recurring units of the formula: ##STR21## and 5 to 30 mol % of recurring units of the formula: ##STR22##

Claim 4

Dependent Claim 31 words

The composition as claimed in claim 1, wherein the density of said poly(arylene thioether-ketone) is at least 1.34 g/cm 3 at 25° C. when annealed at 280° C. for 30 minutes.

Claim 5

Dependent Claim 15 words

The composition as claimed in claim 1, wherein said poly(arylene thioether-ketone) is an uncured polymer.

Claim 6

Dependent Claim 274 words

A heat-resistant molded or formed article obtained from a resin composition comprising: (A) 100 parts by weight of a poly(arylene sulfide) of a substantially linear structure containing 50% by weight or higher of recurring units of the formula: ##STR23## having a logarithmic viscosity number of 0.1 to 1.0 dl/g in a 1-chloronaphthalene solution at a polymer solution of 0.4 g/dl and a temperature of 208° C.; (B) from 0.01 to less than 25 parts by weight of a melt-stable poly(arylene thioether-ketone) having predominant recurring units of the formula: ##STR24## wherein the --CO-- and --S-- are in the para position to each other, and having the following physical properties (a)-(c): (a) melting point, Tm being 310°-380° C.; (b) residual melt crystallization enthalpy, ΔHmc (420° C./10 min) being at least 10 J/g, and melt crystallization temperature, Tmc (420° C./10 min) being at least 210° C., wherein ΔHmc (420° C./10 min) and Tmc (420° C./10 min) are determined by a differential scanning calorimeter at a cooling rate of 10° C./min after the poly(arylene) thioether-ketone) is held at 50° C. for 5 minutes in an inert gas atmosphere, heated to 420° C. at a rate of 75° C./min, and then held at 420° C. for 10 minutes; and (c) reduced viscosity being 0.2 to 2 dl/g as determined by viscosity measurement at 25° C. and a polymer concentration of 0.5 g/dl in a 98 wt. % sulfuric acid; and (C) at least one filler selected from fibrous fillers and inorganic fillers in a proportion of 0 to 400 parts by weight per 100 parts by weight of the resin component comprising said poly(arylene sulfide) and said poly(arylene thioether-ketone).

Claim 7

Dependent Claim 274 words

A heat-resistant molded or formed article obtained from a resin composition comprising: (A) 100 parts by weight of a poly(arylene sulfide) of a substantially linear structure containing 50% by weight or higher of recurring units of the formula: ##STR23## having a logarithmic viscosity number of 0.1 to 1.0 dl/g in a 1-chloronaphthalene solution at a polymer solution of 0.4 g/dl and a temperature of 208° C.; (B) from 0.01 to less than 25 parts by weight of a melt-stable poly(arylene thioether-ketone) having predominant recurring units of the formula: ##STR24## wherein the --CO-- and --S-- are in the para position to each other, and having the following physical properties (a)-(c): (a) melting point, Tm being 310°-380° C.; (b) residual melt crystallization enthalpy, ΔHmc (420° C./10 min) being at least 10 J/g, and melt crystallization temperature, Tmc (420° C./10 min) being at least 210° C., wherein ΔHmc (420° C./10 min) and Tmc (420° C./10 min) are determined by a differential scanning calorimeter at a cooling rate of 10° C./min after the poly(arylene) thioether-ketone) is held at 50° C. for 5 minutes in an inert gas atmosphere, heated to 420° C. at a rate of 75° C./min, and then held at 420° C. for 10 minutes; and (c) reduced viscosity being 0.2 to 2 dl/g as determined by viscosity measurement at 25° C. and a polymer concentration of 0.5 g/dl in a 98 wt. % sulfuric acid; and (C) at least one filler selected from fibrous fillers and inorganic fillers in a proportion of 0 to 400 parts by weight per 100 parts by weight of the resin component comprising said poly(arylene sulfide) and said poly(arylene thioether-ketone).

Claim 8

Dependent Claim 59 words

The heat-resistant molded or formed article as claimed in claim 5, which has the following physical properties (a)-(b): (a) heat distortion temperature being at least 220° C. under a load of 18.6 kg/cm 2 , (b) flexural strength being at least 2 kg/mm 2 at 200° C., or flexural modulus being at least 100 kg/mm 2 at 200° C.

Claim 9

Dependent Claim 42 words

The article as claimed in claim 5, wherein said poly(arylene sulfide) is a block copolymer consisting of 70 to 95 mol % of recurring units of the formula: ##STR25## and 5 to 30 mol % of recurring units of the formula: ##STR26##

Claim 10

Dependent Claim 31 words

The article as claimed in claim 5, wherein the density of said poly(arylene thioether-ketone) is at least 1.34 g/cm 3 at 25° C. when annealed at 280° C. for 30 minutes.

Claim 11

Dependent Claim 15 words

The article as claimed in claim 5, wherein said poly(arylene thioether-ketone) is an uncured polymer.

Claim 12

Dependent Claim 13 words

The article as claimed in claim 5, which is a heat-resistant food container.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1993-01-22	1993-07-24	1994-01-23	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1997-01-22	1997-07-24	1998-01-23	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2001-01-22	2001-07-24	2002-01-23	$7700.00	Window Closed / Lapsed

Heat-resistant resin compositions, and heat-resistant molded or formed articles and production process thereof

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