US5102948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide composite material and method for preparing the same
Assignee: Toyota Motor Corp
•
Filing: 1990-05-02
•
Granted: 1992-04-07
•
Expires: 2010-05-02
Abstract
Abstract Disclosed is a polyamide composite material comprising (A) 100 parts by weight of a polyamide resin and (B) 0.05 to 30 parts by weight of a layered silicate uniformly dispersed in the component (A), wherein the reaction ratio of the components (A) and (B) is 60% or less. Disclosed is also a method for preparing a polyamide composite material comprising making a composite in which a layered silicate, with a cation exchange capacity of 50 to 200 milliequivalents/100 g, is in the swelling condition in a dispersion medium; and mixing the composite with a polyamide resin.
Inventors
- 👤 Ryuichi Deguchi
- 👤 Takeyoshi Nishio
- 👤 Akane Okada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:43
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; B; B82; B82Y; B82Y30/00; C08J; C08J5/00; C08J5/005; C08J2377/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
78 words
A method for preparing a polyamide composite material comprising forming a composite by admixing a layered silicate having a cation exchange capacity of 50 to 200 milliequivalents/100 g with a dispersion medium, whereby said layered silicate swells and has a swelling degree of 5 cc/g or more, said dispersion medium being in an amount of 1 part by weight or more per 1 part by weight of the layered silicate and mixing the composite with a polyamide resin.
Claim 2
Independent Claim
78 words
A method for preparing a polyamide composite material comprising forming a composite by admixing a layered silicate having a cation exchange capacity of 50 to 200 milliequivalents/100 g with a dispersion medium, whereby said layered silicate swells and has a swelling degree of 5 cc/g or more, said dispersion medium being in an amount of 1 part by weight or more per 1 part by weight of the layered silicate and mixing the composite with a polyamide resin.
Claim 3
Dependent Claim
30 words
The method according to claim 1, wherein the layered silicate has an occupied area on the layer surface per one negative electric charge of 25 to 200 Å 2 .
Claim 4
Dependent Claim
27 words
The method according to claim 1, wherein the layered silicate is subjected to substitution with use of at least one of an organic compound and hydrogen ion.
Claim 5
Dependent Claim
40 words
The method according to claim 3, wherein the layered silicate is substituted with an organic compound and said organic compound is at least one compound selected from the group consisting of ammonium salts, pyrridinium salts, sulfonium salts and phosphonium salts.
Claim 6
Dependent Claim
67 words
The method according to claim 3, wherein the layered silicate is substituted with an organic compound, and said organic compound is at least one selected from the group consisting of those having ions of octadecylammonium ion, monomethyloctadecylammonium ion, dimethyloctadecylammomium ion, dodecylammonium ion, 4-amino-n-butyric acid ion, 6-amino-n-caproic acid ion, 8-aminocaprylic acid ion, 10-aminodecanoic acid ion, 12-aminododecanoic acid ion, 14-aminotetradecanoic acid ion, 16-aminohexadecanoic acid ion and 18-aminooctadecanoic acid ion.
Claim 7
Dependent Claim
63 words
The method according to claim 1, wherein the dispersion medium is at least one selected from the group consisting of water, methanol, ethanol, propanol, isopropanol, ethylene glycol, 1,4-butane diol, glycerine, dimethylsulfoxide, N,N-dimethylformamide, acetic acid, fumaric acid, pyridine, aniline, phenol, nitrobenzene, acetonitrile, acetone, methyl ethyl ketone, chloroform, carbon disulfide, propyrene carbonate, 2-methoxyethanol, ether, carbon tetrachloride, n-hexane, ε-caprolactam, ω-lauric lactam, aminocaproic acid and aminododecanoic acid.
Claim 8
Dependent Claim
31 words
The method according to claim 1, wherein the amount of the dispersion medium employed is 100 to 5,000 parts by weight based on 100 parts by weight of the layered silicate.
Claim 9
Dependent Claim
24 words
The method according to claim 1, wherein the composite and the polyamide resin are reacted in an reaction rate percentage of 60% or less.
Claim 10
Dependent Claim
105 words
The method according to claim 5, wherein the dispersion medium is at least one selected from the group consisting of water, methanol, ethanol, propanol, isopropanol, ethylene glycol, 1,4-butane diol, glycerine, dimethylsulfoxide, N,N-dimethylformamide, acetic acid, fumaric acid, pyridine, aniline, phenol, nitrobenzene, acetonitrile, acetone, methyl ethyl ketone, chloroform, carbon disulfide, propyrene carbonate, 2-methoxyethanol, ether, carbon tetrachloride, n-hexane, ε-caprolactam, ω-lauric lactam, aminocaproic acid and aminododecanoic acid, the amount of the dispersion medium employed is 100 to 5,000 parts by weight based on 100 parts by weight of the layered silicate and the composite and the polyamide resin are reacted in a reaction rate percentage of 60% or less.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-04-07 | 1995-10-07 | 1996-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-07 | 1999-10-07 | 2000-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-07 | 2003-10-07 | 2004-04-07 | $7700.00 | Window Closed / Lapsed |