US4990550A
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Fiber-reinforced polymer composition and method of producing same
Assignee: Tonen Chemical Corp
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Filing: 1989-03-20
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Granted: 1991-02-05
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Expires: 2009-03-20
Abstract
Abstract Fiber-reinforced polymer compositions containing resin components including (a) 30-90 weight % of polyamide resins, and (b) 10-70 weight % of polyolefins+unsaturated carboxylic acid-modified polyolefins, based on the resin components; and (c) 5-50 parts by weight of glass fibers per 100 parts by weight of the total compositions, a molar ratio of end amino groups in the polyamide resins to carboxyl groups in the modified polyolefins being 10-1000. The compositions have a morphology in which polyolefin domains having an average size of 0.5-5 μm are uniformly dispersed in polyamide matrix phases. They are produced by a double-screw extruder having a length/inner diameter (L/D) ratio of 25 or more and having a first hopper for introducing the resin components, a second hopper for introducing the glass fibers, a vent and a die exit in this order, and further having at least one first kneading zone for strongly kneading the resin components, and at least one second kneading zone disposed between the second hopper and the vent for strongly kneading the resin components and the glass fibers.
Inventors
- 👤 Kunio Iwanami
- 👤 Kissho Kitano
- 👤 Kiyotada Narukawa
- 👤 Kenichi Aoki
- 👤 Yukihiko Yagi
- 👤 Masato Sakuma
- 👤 Takashi Mikami
- 👤 Masami Esaki
- 👤 Fumio Kato
- 👤 Koji Egashira
- 👤 Hiroyuki Wakabayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:11
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14; B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/46; B29B7/48; B29B7/482; B29B7/483; B29B7/488; B29B7/58; B29B7/72; B29B7/726; B29B7/80; B29B7/88; B29B7/90; B29C; B29C48/00; B29C48/25; B29C48/285; B29C48/288; B29C48/2886; B29C48/297; C08L; C08L23/00; C08L23/02; C08L77/00; B29C48/022; B29C48/03; B29C48/36; B29C48/395; B29C48/40; B29C48/402; B29C48/50; B29C48/505; B29C48/67; B29C48/76; B29C48/765; B29C48/766; B29C48/767; B29K; B29K2077/00; B29K2105/00; B29K2105/06; B29K2105/12
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
101 words
A fiber-reinforced polymer composition comprising a blend of (a) 50-70 weight % of a polyamide resin in a continuous matrix phase with (b) 30-50 weight % of (i) a polyolefin having uniformly dispersed domain phases having an average size of 0.5-5 μm and (ii) an unsaturated carboxylic acid-modified polyolefin, wherein the amount of said modified polyolefin is 0.1-20 weight %, and the molar ratio of end amino groups in said polyamide resin to carboxyl groups in said unsaturated carboxylic acid-modified polyolefin is 10-1000; and (c) 5-50 parts by weight, per 100 parts by weight of the total composition, of glass fibers.
Claim 2
Dependent Claim
101 words
A fiber-reinforced polymer composition comprising a blend of (a) 50-70 weight % of a polyamide resin in a continuous matrix phase with (b) 30-50 weight % of (i) a polyolefin having uniformly dispersed domain phases having an average size of 0.5-5 μm and (ii) an unsaturated carboxylic acid-modified polyolefin, wherein the amount of said modified polyolefin is 0.1-20 weight %, and the molar ratio of end amino groups in said polyamide resin to carboxyl groups in said unsaturated carboxylic acid-modified polyolefin is 10-1000; and (c) 5-50 parts by weight, per 100 parts by weight of the total composition, of glass fibers.
Claim 3
Dependent Claim
27 words
The fiber-reinforced polymer composition according to claim 1, wherein (c) said glass fibers are 15-40 parts by weight per 100 parts by weight of the total composition.
Claim 4
Dependent Claim
26 words
The fiber-reinforced polymer composition according to claim 1 or 2, wherein said polyolefin is polypropylene, and said unsaturated carboxylic acid-modified polyolefin is unsaturated carboxylic acid-modified polypropylene.
Claim 5
Dependent Claim
26 words
The fiber-reinforced polymer composition according to claim 1 or 2, wherein said polyolefin is polyethylene, and said unsaturated carboxylic acid-modified polyolefin is unsaturated carboxylic acid-modified polyethylene.
Claim 6
Dependent Claim
121 words
A fiber-reinforced polymer composition comprising a blend of (a) 50-70 weight % of a polyamide resin in a continuous matrix phase with (b) 30-50 weight % of (i) a polyolefin having uniformly dispersed domain phases having an average size of 0.5-5 μm and (ii) an unsaturated carboxylic acid-modified polyolefin, wherein the amount of said modified polyolefin is 0.1-20 weight %, and the molar ratio of end amino groups in said polyamide resin to carboxyl groups in said unsaturated carboxylic acid-modified polyolefin is 10-1000; and (c) 5-50 parts by weight, per 100 parts by weight of the total composition, of glass fibers coated with a silane coupling agent and a tying agent of a polymer containing a carboxyl or acid anhydride group.
Claim 7
Dependent Claim
121 words
A fiber-reinforced polymer composition comprising a blend of (a) 50-70 weight % of a polyamide resin in a continuous matrix phase with (b) 30-50 weight % of (i) a polyolefin having uniformly dispersed domain phases having an average size of 0.5-5 μm and (ii) an unsaturated carboxylic acid-modified polyolefin, wherein the amount of said modified polyolefin is 0.1-20 weight %, and the molar ratio of end amino groups in said polyamide resin to carboxyl groups in said unsaturated carboxylic acid-modified polyolefin is 10-1000; and (c) 5-50 parts by weight, per 100 parts by weight of the total composition, of glass fibers coated with a silane coupling agent and a tying agent of a polymer containing a carboxyl or acid anhydride group.
Claim 8
Dependent Claim
27 words
The fiber-reinforced polymer composition according to claim 5, wherein (c) said glass fibers are 15-40 parts by weight per 100 parts by weight of the total composition.
Claim 9
Dependent Claim
123 words
A fiber-reinforced polymer composition comprising a blend of (a) 50-70 weight % of a polyamide resin in a continuous matrix phase with (b) 30-50 weight % of (i) a polyolefin having uniformly dispersed domain phases having an average size of 0.5-5 μm and (ii) an unsaturated carboxylic acid-modified polyolefin, wherein the amount of said modified polyolefin is 0.1-20 weight % and the molar ratio of end amino groups in said polyamide resin to carboxyl groups in said unsaturated carboxylic acid-modified polyolefin is 10-1000; (c) 5-50 parts by weight, per 100 parts by weight of the total composition, of glass fibers; and (d) 1-10 parts by weight, per 100 parts by weight of the total composition, of a spherical, flaky or fibrous inorganic filler.
Claim 10
Dependent Claim
123 words
A fiber-reinforced polymer composition comprising a blend of (a) 50-70 weight % of a polyamide resin in a continuous matrix phase with (b) 30-50 weight % of (i) a polyolefin having uniformly dispersed domain phases having an average size of 0.5-5 μm and (ii) an unsaturated carboxylic acid-modified polyolefin, wherein the amount of said modified polyolefin is 0.1-20 weight % and the molar ratio of end amino groups in said polyamide resin to carboxyl groups in said unsaturated carboxylic acid-modified polyolefin is 10-1000; (c) 5-50 parts by weight, per 100 parts by weight of the total composition, of glass fibers; and (d) 1-10 parts by weight, per 100 parts by weight of the total composition, of a spherical, flaky or fibrous inorganic filler.
Claim 11
Dependent Claim
27 words
The fiber-reinforced polymer composition according to claim 7, wherein (c) said glass fibers are 15-40 parts by weight per 100 parts by weight of the total composition.
Claim 12
Dependent Claim
151 words
A fiber-reinforced polymer composition comprising a blend of (a) 50-70 weight % of a polyamide resin in a continuous matrix phase with (b) 30-50 weight % of (i) a polyolefin having uniformly dispersed domain phases having an average size of 0.5-5 μm and (ii) an unsaturated carboxyl acid-modified polyolefin, wherein the amount of said modified polyolefin is 0.1-20 weight %, and the molar ratio of end amino groups in said polyamide resin to carboxylic groups in said unsaturated carboxylic acid-modified polyolefin is 10-1000; (c) 5-50 parts by weight, per 100 parts by weight of the total composition, of glass fibers; and (d) 0.03-3 parts by weight, per 100 parts by weight of the total composition, of at least one nucleating agent selected from the group consisting of a metal salt of an aromatic carboxylic acid, a metal salt of an alkyl group-substituted derivative of an aromatic carboxylic acid and dibenzylidene sorbitol.
Claim 13
Dependent Claim
151 words
A fiber-reinforced polymer composition comprising a blend of (a) 50-70 weight % of a polyamide resin in a continuous matrix phase with (b) 30-50 weight % of (i) a polyolefin having uniformly dispersed domain phases having an average size of 0.5-5 μm and (ii) an unsaturated carboxyl acid-modified polyolefin, wherein the amount of said modified polyolefin is 0.1-20 weight %, and the molar ratio of end amino groups in said polyamide resin to carboxylic groups in said unsaturated carboxylic acid-modified polyolefin is 10-1000; (c) 5-50 parts by weight, per 100 parts by weight of the total composition, of glass fibers; and (d) 0.03-3 parts by weight, per 100 parts by weight of the total composition, of at least one nucleating agent selected from the group consisting of a metal salt of an aromatic carboxylic acid, a metal salt of an alkyl group-substituted derivative of an aromatic carboxylic acid and dibenzylidene sorbitol.
Claim 14
Dependent Claim
27 words
The fiber-reinforced polymer composition according to claim 9, wherein (c) said glass fibers are 15-40 parts by weight per 100 parts by weight of the total composition.
Claim 15
Dependent Claim
118 words
A fiber-reinforced polymer composition comprising a blend of (a) 50-70 weight % of a polyamide resin consisting of nylon 66 and nylon 6 in a weight ratio of 40/60-90/10, said polyamide resin being in a continuous matrix phase, with (b) 30-50 weight % of (i) a polyolefin having uniformly dispersed domain phases having an average size of 0.5-5 μm and (ii) an unsaturated carboxylic acid-modified polyolefin, wherein the amount of said modified polyolefin is 0.1-20 weight % and the molar ratio of end amino groups in said polyamide resin to carboxyl groups in said unsaturated carboxylic acid-modified polyolefin is 10-1000; and (c) 5-50 parts by weight, per 100 parts by weight of the total composition, of glass fibers.
Claim 16
Dependent Claim
118 words
A fiber-reinforced polymer composition comprising a blend of (a) 50-70 weight % of a polyamide resin consisting of nylon 66 and nylon 6 in a weight ratio of 40/60-90/10, said polyamide resin being in a continuous matrix phase, with (b) 30-50 weight % of (i) a polyolefin having uniformly dispersed domain phases having an average size of 0.5-5 μm and (ii) an unsaturated carboxylic acid-modified polyolefin, wherein the amount of said modified polyolefin is 0.1-20 weight % and the molar ratio of end amino groups in said polyamide resin to carboxyl groups in said unsaturated carboxylic acid-modified polyolefin is 10-1000; and (c) 5-50 parts by weight, per 100 parts by weight of the total composition, of glass fibers.
Claim 17
Dependent Claim
27 words
The fiber-reinforced polymer composition according to claim 11, wherein (c) said glass fibers are 15-40 parts by weight per 100 parts by weight of the total composition.
Claim 18
Dependent Claim
108 words
A fiber-reinforced polymer composition comprising a blend of (a) 50-70 weight % of a polyamide resin comprising nylon 46, said polyamide resin being in a continuous matrix phase, with (b) 30-50 weight % of (i) a polyolefin having uniformly dispersed domain phases having an average size of 0.5-5 μm and (ii) an unsaturated carboxylic acid-modified polyolefin, wherein the amount of said modified polyolefin is 0.1-20 weight % and the molar ratio of end amino groups in said polyamide resin to carboxylic groups in said unsaturated carboxyl acid-modified polyolefin is 10-1000; and (c) 5-50 parts by weight, per 100 parts by weight of the total composition, of glass fibers.
Claim 19
Dependent Claim
108 words
A fiber-reinforced polymer composition comprising a blend of (a) 50-70 weight % of a polyamide resin comprising nylon 46, said polyamide resin being in a continuous matrix phase, with (b) 30-50 weight % of (i) a polyolefin having uniformly dispersed domain phases having an average size of 0.5-5 μm and (ii) an unsaturated carboxylic acid-modified polyolefin, wherein the amount of said modified polyolefin is 0.1-20 weight % and the molar ratio of end amino groups in said polyamide resin to carboxylic groups in said unsaturated carboxyl acid-modified polyolefin is 10-1000; and (c) 5-50 parts by weight, per 100 parts by weight of the total composition, of glass fibers.
Claim 20
Dependent Claim
42 words
The fiber-reinforced polymer composition according to claim 13, wherein said polyamide resin additionally contains at least one of nylon 66 and nylon 6 in a proportion of 85 parts by weight or less per 100 parts by weight of said polyamide resin.
Claim 21
Dependent Claim
27 words
The fiber-reinforced polymer composition according to claim 13, wherein (c) said glass fibers are 15-40 parts by weight per 100 parts by weight of the total composition.
Claim 22
Dependent Claim
116 words
A fiber-reinforced polymer composition comprising a blend of (a) 50-70 weight % of a polyamide resin in a continuous matrix phase, wherein said polyamide comprises at least one of nylon 12, nylon 612 and nylon 11 with (b) 30-50 weight % of (i) a polyolefin having uniformly dispersed domain phases having an average size of 0.5-5 μm and (ii) an unsaturated carboxylic acid-modified polyolefin, wherein the amount of said modified polyolefin is 0.1-20 weight % and the molar ratio of end amino groups in said polyamide resin to carboxyl groups in said unsaturated carboxylic acid-modified polyolefin is 10-1000; and (c) 5-50 parts by weight, per 100 parts by weight of the total composition, of glass fibers.
Claim 23
Dependent Claim
116 words
A fiber-reinforced polymer composition comprising a blend of (a) 50-70 weight % of a polyamide resin in a continuous matrix phase, wherein said polyamide comprises at least one of nylon 12, nylon 612 and nylon 11 with (b) 30-50 weight % of (i) a polyolefin having uniformly dispersed domain phases having an average size of 0.5-5 μm and (ii) an unsaturated carboxylic acid-modified polyolefin, wherein the amount of said modified polyolefin is 0.1-20 weight % and the molar ratio of end amino groups in said polyamide resin to carboxyl groups in said unsaturated carboxylic acid-modified polyolefin is 10-1000; and (c) 5-50 parts by weight, per 100 parts by weight of the total composition, of glass fibers.
Claim 24
Dependent Claim
42 words
The fiber-reinforced polymer composition according to claim 16, wherein said polyamide resin further contains at least one of nylon 66 and nylon 6 in a proportion of 85 parts by weight or less per 100 parts by weight of said polyamide resin.
Claim 25
Dependent Claim
27 words
The fiber-reinforced polymer composition according to claim 16, wherein (c) said glass fibers are 15-40 parts by weight per 100 parts by weight of the total composition.
References Cited (Backward Citations)
US4381366A
Cited
US4404312A
Cited
JPS6058458A
Cited
JPS6126939A
Cited
JPS6176540A
Cited
US4762882A
Cited
JPS62241940A
Cited
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