US4761445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide resin composition
Assignee: Stamicarbon BV
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Filing: 1985-11-20
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Granted: 1988-08-02
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Expires: 2005-11-20
Abstract
Abstract PCT No. PCT/NL85/00047 Sec. 371 Date Jul. 15, 1986 Sec. 102(e) Date Jul. 15, 1986 PCT Filed Nov. 20, 1985 PCT Pub. No. WO86/03213 PCT Pub. Date Jun. 5, 1986.The subject invention relates to polytetramethylene adipamide resin compositions containing 100 parts by weight of the polyamide and 2 to 20 parts by weight of a silicon oil. Objects produced from the composition possess good surface appearance, excellent sliding properties and high heat resistance and rigidity.
Inventors
- 👤 Kazumasa Chiba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:38
CPC Classifications
C; C08; C08L; C08L77/00; C08K; C08K5/00; C08K5/54
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
30 words
A polyamide resin composition comprising 100 parts by weight of a polyamide having tetramethylene adipamide as a main component and 2 to 20 parts by weight of a silicon oil.
Claim 2
Dependent Claim
30 words
A polyamide resin composition comprising 100 parts by weight of a polyamide having tetramethylene adipamide as a main component and 2 to 20 parts by weight of a silicon oil.
Claim 3
Dependent Claim
24 words
The polyamide resin composition according to claim 1 wherein said polyamide resin composition comprises 3 to 18 parts by weight of said silicon oil.
Claim 4
Dependent Claim
24 words
The polyamide resin composition according to claim 1 wherein said polyamide resin composition comprises 5 to 15 parts by weight of said silicon oil.
Claim 5
Dependent Claim
23 words
The polyamide resin composition according to claim 1 wherein said silicon oil has a viscosity in the range of 100 to 50,000 centistokes.
Claim 6
Dependent Claim
23 words
The polyamide resin composition according to claim 4 wherein said silicon oil has a viscosity in the range of 1,000 to 30,000 centistokes.
Claim 7
Dependent Claim
12 words
A mold consisting essentially of a polyamide resin composition according to claim
Claim 8
Dependent Claim
40 words
A process for the preparation of a polyamide resin composition having superior sliding characteristics comprising blending 2 to 20 parts by weight of silicon oil with 100 parts by weight of a polyamide having tetramethylene adipamide as a main component.
Claim 9
Dependent Claim
40 words
A process for the preparation of a polyamide resin composition having superior sliding characteristics comprising blending 2 to 20 parts by weight of silicon oil with 100 parts by weight of a polyamide having tetramethylene adipamide as a main component.
Claim 10
Dependent Claim
134 words
The polyamide resin composition according to claim 1 wherein said silicon oil is selected from the group consisting of polysiloxanes having component units selected from the group consisting of the following formulas 1 to 7 and polysiloxanes having end groups selected from the group consisting of the following formulas 8 to 12: ##STR10## wherein R 1 and R 2 are hydrogen, a C 1 to C 4 alkyl group, a cyclo hexyl group, a phenyl group or a benzyl group, with the proviso that R 1 and R 2 are not simultaneously either hydrogen or a methyl group; R 3 is a C 1 to C 4 alkyl group; R 4 is a C 1 to C 6 alkylene group; and A is a polyalkylene having a degree of polymerization of 1 to 50.
References Cited (Backward Citations)
JPS54118453A
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JPS57174345A
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SU1028694A1
Cited
JPS59142247A
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US4428589A
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JPS6038439A
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JPH07251479A
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JPH07328337A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-02 | 1992-02-01 | 1992-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-02 | 1996-02-01 | 1996-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-02 | 2000-02-01 | 2000-08-02 | $7700.00 | Window Closed / Lapsed |