Patent US4945005A successfully refreshed from Google Patents.
US4945005A
Expired / Lapsed
US
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Thermoplastic compositions and articles made therefrom
Assignee: DIS A DELAWARE PARTNERSHIP
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Filing: 1989-07-28
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Granted: 1990-07-31
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Expires: 2009-07-28
Abstract
Abstract Thermoplastic compositions and articles made therefore which have a high receptivity toward automotive paints comprises components (a), (b), (c), (d), and (e), wherein, for example 2%-25% (a) is a copolymer of an ethylenically unsaturated carboxylic acid and ethylene, 3%-50% (b) is an elastomer comprising an ethylene-alpha-olefin copolymer, 0%-55% (c) is a crystalline homopolymer or copolymer of propylene, 5%-50% (d) is an inorganic filler, and 10%-35% (e) is polyethylene or a copolymer of ethylene and an alpha-olefin. Such articles, when injection molded, exhibit flexural moduli in the range of 30,000 to 400,000 psi and have excellent paintability, a broad range of stiffness values and high impact and tensile strengths suitable for automotive applications such as bumpers and facias and wheel covers.
Inventors
- 👤 John F. Aleckner, Jr.
- 👤 David J. Cherry
- 👤 Lee R. Spencer, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:46
CPC Classifications
C; C08; C08L; C08L53/00; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/08; C08L23/0846; C08L23/0869; C08L23/10; C08L23/12; C08L23/14; C08L23/142; C08L23/16; C08L51/00; C08L51/003; C08L51/06; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/19; C08L2205/00; C08L2205/03; C08L2205/035; C08L35/00; C08L35/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
261 words
A thermoplastic composition comprising: (a) about 2 to 25 weight percent of a copolymer having a melt index of between 0.5 and 1500 and derived from (i) about 70 to 95 weight percent of ethylene and (ii) about 5 to 30 weight percent of an ethylenically unsaturated carboxylic acid; (b) about 3 to 50 weight percent of an elastomeric copolymer derived from (i) ethylene and (ii) a C 3 and C 12 alpha-olefin; (c) an amount up to about 55 weight percent of a crystalline polymer, said amount being sufficient to enable the thermoplastic composition to withstand an oven bake temperature of greater than 180° F., said polymer having a flow rate of up to about 30 and selected from one or more of the group consisting of (i) a homopolypropylene, (ii) a polypropylene onto which has been grafted up to about 12 weight percent of an ethylenically unsaturated carboxylic acid, and (iii) a copolymer of (1) propylene and (2) up to about 20 mole percent of a C 2 to C 12 alpha-olefin; (d) about 5 to 50 weight percent of an inorganic filler; and (e) about 10 to 35 weight percent of a polymer having a melt index of between about 0.1 and 20 and selected from one or more of the group consisting of (i) homopolyethylene and (ii) a copolymer of (1) ethylene and (2) one or more of the group consisting of (A) a C 3 to C 12 alpha-olefin, (B) a salt of an unsaturated carboxylic acid, and (C) an ester of an unsaturated carboxylic acid.
Claim 2
Dependent Claim
261 words
A thermoplastic composition comprising: (a) about 2 to 25 weight percent of a copolymer having a melt index of between 0.5 and 1500 and derived from (i) about 70 to 95 weight percent of ethylene and (ii) about 5 to 30 weight percent of an ethylenically unsaturated carboxylic acid; (b) about 3 to 50 weight percent of an elastomeric copolymer derived from (i) ethylene and (ii) a C 3 and C 12 alpha-olefin; (c) an amount up to about 55 weight percent of a crystalline polymer, said amount being sufficient to enable the thermoplastic composition to withstand an oven bake temperature of greater than 180° F., said polymer having a flow rate of up to about 30 and selected from one or more of the group consisting of (i) a homopolypropylene, (ii) a polypropylene onto which has been grafted up to about 12 weight percent of an ethylenically unsaturated carboxylic acid, and (iii) a copolymer of (1) propylene and (2) up to about 20 mole percent of a C 2 to C 12 alpha-olefin; (d) about 5 to 50 weight percent of an inorganic filler; and (e) about 10 to 35 weight percent of a polymer having a melt index of between about 0.1 and 20 and selected from one or more of the group consisting of (i) homopolyethylene and (ii) a copolymer of (1) ethylene and (2) one or more of the group consisting of (A) a C 3 to C 12 alpha-olefin, (B) a salt of an unsaturated carboxylic acid, and (C) an ester of an unsaturated carboxylic acid.
Claim 3
Dependent Claim
143 words
A composition according to claim 1 comprising: (a) about 10 to 15 weight percent of an ethylene-methacrylic acid copolymer having a melt index of between 10 and 300; (b) about 20 to 25 weight percent of an ethylene-propylene rubber; (c) (i) about 10 to 15 weight percent of polypropylene having a melt flow rate of between 10 and 15, (ii) about 5 to 10 weight percent of an acrylic acid grafted polypropylene, and (iii) about 15 to 20 weight percent of a copolymer of (1) about 95 to 99 mole percent propylene and (2) about 1 to 5 mole percent ethylene, (d) about 5 to 15 weight percent talc; and (e) (i) about 3 to 15 weight percent high density polyethylene, and (ii) about 5 to 15 weight percent of a copolymer of (1) ethylene and (2) a metal salt of methacrylic acid.
Claim 4
Dependent Claim
120 words
A composition according to claim 1 comprising: (a) about 10 to 15 weight percent of an ethylene-methacrylic acid copolymer having a melt index of between 10 and 300; (b) about 15 to 20 weight percent of an ethylene-propylene rubber; (c) (i) about 10 to 15 weight percent of polypropylene having a melt flow rate of between 10 and 15, (ii) about 5 to 10 weight percent of an acrylic acid grafted polypropylene, and (iii) about 5 to 15 weight percent of a copolymer of (1) about 95 to 99 mole percent propylene, and (2) about 1 to 5 mole percent ethylene, (d) about 15 to 25 weight percent talc; and (e) about 15 to 25 weight percent high density polyethylene.
Claim 5
Dependent Claim
91 words
A composition according to claim 1 comprising: (a) about 2 to 15 weight percent of an ethylene-methacrylic acid copolymer having a melt index of between 10 and 300; (b) about 3 to 15 weight percent of an ethylene-propylene rubber; (c) (i) about 1 to 5 weight percent of polypropylene having a melt flow rate of between 10 and 15, (ii) about 5 to 25 weight percent of an acrylic acid grafted polypropylene; (d) about 40 to 50 weight percent talc; and (e) about 15 to 25 weight percent high density polyethylene.
Claim 6
Dependent Claim
60 words
A composition according to claim 2, 3 or 4, further comprising: (f) about 0.5 to 1.0 weight percent styrene-maleic anhydride copolymer; (g) about 0.1 to 0.2 weight percent nucleating agent; (h) about 0.1 to 0.5 weight percent quarternary ammonium surfactant; (i) about 0.1 to 1.0 weight percent antioxidant; and (j) from 0 to about 0.50 weight percent titanate coupling agent.
Claim 7
Dependent Claim
12 words
A shaped article made from a thermoplastic composition according to claim 1.
Claim 8
Dependent Claim
12 words
An article according to claim 6 having one or more painted surfaces.
Claim 9
Dependent Claim
12 words
A shaped article made from a thermoplastic composition according to claim 3.
Claim 10
Dependent Claim
12 words
An article according to claim 8 having one or more painted surfaces.
Claim 11
Dependent Claim
12 words
A shaped article made from a thermoplastic composition according to claim 4.
Claim 12
Dependent Claim
12 words
An article according to claim 10 having one or more painted surfaces.
Claim 13
Dependent Claim
12 words
A shaped article made from a thermoplastic composition according to claim 5.
Claim 14
Dependent Claim
12 words
An article according to claim 12 having one or more painted surfaces.
Claim 15
Dependent Claim
267 words
A thermoplastic composition comprising: (a) about 2 to 25 weight percent of a copolymer having a melt index of between 1.0 and less than 2.0 and derived from (i) about 70 to 95 weight percent of ethylene and (ii) about 5 to 30 weight percent of a salt of an ethylenically unsaturated carboxylic acid; (b) about 3 to 50 weight percent of an elastomeric copolymer derived from (i) ethylene and (ii) a C 3 to C 12 alpha-olefin; (c) an amount up to about 55 weight percent of a crystalline polymer, said amount being sufficient to enable the thermoplastic composition to withstand an oven bake temperature of greater than 180 ° F., said polymer having a flow rate of up to about 30 and selected from one or more of the group consisting of (i) a homopolypropylene, (ii) a polypropylene onto which has been grafted up to about 12 weight percent of an ethylenically unsaturated carboxylic acid, and (iii) a copolymer of (1) propylene and (2) up to about 20 mole percent of a C 2 to C 12 alpha-olefin; (d) about 5 to 50 weight percent of an inorganic filler; and (e) about 10 to 35 weight percent of a polymer having a melt index of between about 2.0 and 20 and selected from one or more of the group consisting of (i) homopolyethylene and (ii) a copolymer of (1) ethylene and (2) one or more of the group consisting of (A) a C 3 and C 12 alpha-olefin, (B) a salt of an unsaturated carboxylic acid and (C) an ester of an unsaturated carboxylic acid.
Claim 16
Dependent Claim
267 words
A thermoplastic composition comprising: (a) about 2 to 25 weight percent of a copolymer having a melt index of between 1.0 and less than 2.0 and derived from (i) about 70 to 95 weight percent of ethylene and (ii) about 5 to 30 weight percent of a salt of an ethylenically unsaturated carboxylic acid; (b) about 3 to 50 weight percent of an elastomeric copolymer derived from (i) ethylene and (ii) a C 3 to C 12 alpha-olefin; (c) an amount up to about 55 weight percent of a crystalline polymer, said amount being sufficient to enable the thermoplastic composition to withstand an oven bake temperature of greater than 180 ° F., said polymer having a flow rate of up to about 30 and selected from one or more of the group consisting of (i) a homopolypropylene, (ii) a polypropylene onto which has been grafted up to about 12 weight percent of an ethylenically unsaturated carboxylic acid, and (iii) a copolymer of (1) propylene and (2) up to about 20 mole percent of a C 2 to C 12 alpha-olefin; (d) about 5 to 50 weight percent of an inorganic filler; and (e) about 10 to 35 weight percent of a polymer having a melt index of between about 2.0 and 20 and selected from one or more of the group consisting of (i) homopolyethylene and (ii) a copolymer of (1) ethylene and (2) one or more of the group consisting of (A) a C 3 and C 12 alpha-olefin, (B) a salt of an unsaturated carboxylic acid and (C) an ester of an unsaturated carboxylic acid.
Claim 17
Dependent Claim
29 words
A thermoplastic composition according to claim 14 wherein the component (a)(ii) is selected from one or more of the group consisting of sodium and zinc salts of methacrylic acid.
Claim 18
Dependent Claim
134 words
A composition according to claim 15 comprising: (a) about 10 to 15 weight percent of an ethylene-zinc methacrylate copolymer; (b) about 20 to 25 weight percent of an ethylene-propylene rubber; (c) (i) about 10 to 15 weight percent of polypropylene having a melt flow rate of between 10 and 15, (ii) about 5 to 10 weight percent of an acrylic acid grafted polypropylene, and (iii) about 15 to 20 weight percent of a copolymer of (1) about 95 to 99 mole percent propylene and (2) about 1 to 5 mole percent ethylene, (d) about 5 to 15 weight percent talc; and (e) (i) about 3 to 15 weight percent high density polyethylene, and (ii) about 5 to 15 weight percent of a copolymer of (1) ethylene and (2) a metal salt of methacrylic acid.
Claim 19
Dependent Claim
111 words
A composition according to claim 14 comprising: (a) about 10 to 15 weight percent of an ethylene-zinc methacrylate copolymer; (b) about 15 to 20 weight percent of an ethylene-propylene rubber; (c) (i) about 10 to 15 weight percent of polypropylene having a melt flow rate of between 10 and 15, (ii) about 5 to 10 weight percent of an acrylic acid grafted polypropylene, and (iii) about 5 to 15 weight percent of a copolymer of (1) bout 95 to 99 mole percent propylene, and (2) about 1 to 5 mole percent ethylene, (d) about 15 to 25 weight percent talc; and (e) about 15 to 25 weight percent high density polyethylene.
Claim 20
Dependent Claim
82 words
A composition according to claim 14 comprising: (a) about 2 to 15 weight percent of an ethylene-zinc methacrylate copolymer; (b) about 3 to 15 weight percent of an ethylene-propylene rubber; (c) (i) about 1 to 5 weight percent of polypropylene having a melt flow rate of between 10 and 15, (ii) about 5 to 25 weight percent of an acrylic acid grafted polypropylene; (d) about 40 to 50 weight percent talc; and (e) about 15 to 25 weight percent high density polyethylene.
Claim 21
Dependent Claim
60 words
A composition according to claim 16, 17 or 18, further comprising: (f) about 0.5 to 1.0 weight percent styrene-maleic anhydride copolymer; (g) about 0.1 to 0.2 weight percent nucleating agent; (h) about 0.1 to 0.5 weight percent quarternary ammonium surfactant; (i) about 0.1 to 1.0 weight percent antioxidant; and (j) from 0 to about 0.50 weight percent titanate coupling agent.
Claim 22
Dependent Claim
12 words
A shaped article made from a thermoplastic composition according to claim 14.
Claim 23
Dependent Claim
12 words
An article according to claim 20 having one or more painted surfaces.
Claim 24
Dependent Claim
12 words
A shaped article made from a thermoplastic composition according to claim 17.
Claim 25
Dependent Claim
12 words
An article according to claim 22 having one or more painted surfaces.
Claim 26
Dependent Claim
12 words
A shaped article made from a thermoplastic composition according to claim 18.
Claim 27
Dependent Claim
12 words
An article according to claim 24 having one or more painted surfaces.
Claim 28
Dependent Claim
12 words
A shaped article made from a thermoplastic composition according to claim 19.
Claim 29
Dependent Claim
12 words
An article according to claim 26 having one or more painted surfaces.
References Cited (Backward Citations)
US3410928A
Cited
US3465060A
Cited
US3384612A
Cited
US3454676A
Cited
US3433853A
Cited
US3869422A
Cited
US4277578A
Cited
US4417019A
Cited
US4420580A
Cited
US4584348A
Cited
US4613647A
Cited
US4600748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |