EP0265839A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A thermoplastic resin-based molding composition
Assignee: Idemitsu Fine Composites Co Ltd
•
Filing: 1987-10-22
•
Granted: —
•
Expires: 2007-10-22
Abstract
Abstract The thermoplastic polymeric molding composition of the invention has good moldability in shaping by injection molding, extrusion molding and compression molding and capable of giving shaped articles having good machinability in mechanical working such as cutting, grinding and lathing. The composition is compounded from 2 to 70 parts by weight of a thermoplastic polymer such as a polyamide resin and from 98 to 30 parts by weight of a metallic filler such as zinc powder and zinc oxide powder having a surface coated with a water repellent agent such as silane coupling agents, titanate coupling agents and silicone fluids in a specified amount. A part of the above mentioned particulate filler may optionally be replaced with a fibrous filler such as glass fibers and carbon fibers so that the shaped articles of the molding composition may be imparted with increased impact strength.
Inventors
- 👤 Hideo Ohkawa
- 👤 Masakuni Chikushi
- 👤 Hironori Nakamura
- 👤 Shinji Funayama
- 👤 Takashi Hashimoto
- 👤 Takahiro Hirai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 16:58
CPC Classifications
C; C08; C08L; C08L101/00; C08K; C08K9/00; C08K9/04; C08K3/00; C08K3/02; C08K3/08; C08K3/18; C08K3/20; C08K3/22; C08K9/06; C08K9/10
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
74 words
A thermoplastic polymeric molding composition which comprises: (A) from 2 to 70 parts by weight of a thermoplastic polymer as the matrix phase; and (B) from 98 to 30 parts by weight of a metallic filler, of which the particles have a surface coated with a water repellent agent, the amount of the water repellent agent being in the range from 0.01 to 5% by weight based on the metallic filler before coating therewith.
Claim 2
Dependent Claim
74 words
A thermoplastic polymeric molding composition which comprises: (A) from 2 to 70 parts by weight of a thermoplastic polymer as the matrix phase; and (B) from 98 to 30 parts by weight of a metallic filler, of which the particles have a surface coated with a water repellent agent, the amount of the water repellent agent being in the range from 0.01 to 5% by weight based on the metallic filler before coating therewith.
Claim 3
Dependent Claim
41 words
The thermoplastic polymeric molding composition as claimed in claim 1 which further comprises: (C) a low-molecular oxidized polypropylene in an amount in the range from 0.1 to 2% by weight based on the total amount of the components (A) and (B).
Claim 4
Dependent Claim
135 words
A thermoplastic polymeric molding composition which comprises: (A) from 2 to 70 parts by weight of a thermoplastic polymer as the matrix; and (B) from 98 to 30 parts by weight of a filler which is a combination of (B-1) a metallic particulate filler having an average particle diameter in the range from 0.1 to 20 µm, and (B-2) a fibrous filler having an aspect ratio in the range from 50 to 2500, in a weight ratio of (B-1):(B-2) in the range from 1:1 to 30:1, the surface of the particles of the component (B-1) and the fibers of the component (B-2) being coated with a water repellent agent in an amount in the range from 0.01 to 5% by weight based on the total amount of the components (B-1) and (B-2) before coating therewith.
Claim 5
Dependent Claim
135 words
A thermoplastic polymeric molding composition which comprises: (A) from 2 to 70 parts by weight of a thermoplastic polymer as the matrix; and (B) from 98 to 30 parts by weight of a filler which is a combination of (B-1) a metallic particulate filler having an average particle diameter in the range from 0.1 to 20 µm, and (B-2) a fibrous filler having an aspect ratio in the range from 50 to 2500, in a weight ratio of (B-1):(B-2) in the range from 1:1 to 30:1, the surface of the particles of the component (B-1) and the fibers of the component (B-2) being coated with a water repellent agent in an amount in the range from 0.01 to 5% by weight based on the total amount of the components (B-1) and (B-2) before coating therewith.
Claim 6
Dependent Claim
41 words
The thermoplastic polymeric molding composition as claimed in claim 3 which further comprises: (C) a low-molecular oxidized polypropylene in an amount in the range from 0.1 to 2% by weight based on the total amount of the components (A) and (B).
Claim 7
Dependent Claim
27 words
The thermoplastic polymeric molding composition as claimed in claim 1 wherein the thermoplastic polymer is selected from the group consisting of polyamide resins, polypropylenes and poly(butylene terephthalates).
Claim 8
Dependent Claim
27 words
The thermoplastic polymeric molding composition as claimed in claim 3 wherein the thermoplastic polymer is selected from the group consisting of polyamide resins, polypropylenes and poly(butylene terephthalates).
Claim 9
Dependent Claim
24 words
The thermoplastic polymeric molding composition as claimed in claim 1 wherein the metallic filler as the component (B) is a powder of metallic zinc.
Claim 10
Dependent Claim
25 words
The thermoplastic polymeric molding composition as claimed in claim 3 wherein the metallic particulate filler as the component (B-1) is a powder of metallic zinc.
Claim 11
Dependent Claim
24 words
The thermoplastic polymeric molding composition as claimed in claim 1 wherein the metallic filler as the component (B) is a powder of zinc oxide.
Claim 12
Dependent Claim
25 words
The thermoplastic polymeric molding composition as claimed in claim 3 wherein the metallic particulate filler as the component (B-1) is a powder of zinc oxide.
Claim 13
Dependent Claim
40 words
The thermoplastic polymeric molding composition as claimed in claim 3 wherein the fibrous filler as the compo nent (B-2) is selected from the group consisting of glass fibers, carbon fibers, stainless steel fibers, potassium titanate whiskers and aromatic polyamide fibers.
Claim 14
Dependent Claim
31 words
The thermoplastic polymeric molding composition as claimed in claim 1 wherein the water repellent agent is selected from the group consisting of silane coupling agents, titanate coupling agents and silicone fluids.
Claim 15
Dependent Claim
31 words
The thermoplastic polymeric molding composition as claimed in claim 3 wherein the water repellent agent is selected from the group consisting of silane coupling agents, titanate coupling agents and silicone fluids.
Claim 16
Dependent Claim
42 words
The thermoplastic polymeric molding composition as claimed in claim 1 wherein the water repellent agent is selected from the group consisting of 3-aminopropyl triethoxy silane, N-(2-aminoethyl)-3-aminopropyl trimethoxy silane, isopropyl triisostearoyl titanate, isopropyl tri(N-aminoethyl aminoethyl) titanate, dimethyl silicone fluids and methyl hydrogen polysiloxanes.
Claim 17
Dependent Claim
42 words
The thermoplastic polymeric molding composition as claimed in claim 3 wherein the water repellent agent is selected from the group consisting of 3-aminopropyl triethoxy silane, N-(2-aminoethyl)-3-aminopropyl trimethoxy silane, isopropyl triisostearoyl titanate, isopropyl tri(n-amidoethyl aminoethyl) titanate, dimethyl silicone fluids and methyl hydrogen polysiloxanes.
Claim 18
Dependent Claim
31 words
The thermoplastic polymeric molding composition as claimed in claim 2 wherein the low-molecular oxidized polypropylene as the component (C) has an average molecular weight in the range from 1500 to 20000.
Claim 19
Dependent Claim
31 words
The thermoplastic polymeric molding composition as claimed in claim 4 wherein the low-molecular oxidized polypropylene as the component (C) has an average molecular weight in the range from 1500 to 20000.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.