US5378750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-retardant polyamide molding compounds
Assignee: Lanxess Deutschland GmbH
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Filing: 1993-12-27
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Granted: 1995-01-03
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Expires: 2013-12-27
Abstract
Abstract This invention relates to readily processable polyamide molding compounds combining very good mechanical and electrical properties with high surface quality based on copolyamides and magnesium hydroxide.
Inventors
- 👤 Aziz El Sayed
- 👤 Edgar Ostlinning
- 👤 Karsten-Josef Idel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:08
CPC Classifications
C; C08; C08L; C08L77/00; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/04; C08K5/13; C08L61/00; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
39 words
A flame-resistant molding composition consisting of a thermoplastic, partially crystalline polyamide and 40-60% by weight, based on weight of molding composition, of magnesium hydroxide, and optionally one or more of a reinforcing material, an elastomer modifier, and processing additives.
Claim 2
Dependent Claim
39 words
A flame-resistant molding composition consisting of a thermoplastic, partially crystalline polyamide and 40-60% by weight, based on weight of molding composition, of magnesium hydroxide, and optionally one or more of a reinforcing material, an elastomer modifier, and processing additives.
Claim 3
Dependent Claim
42 words
The composition of claim 1, consisting of 30 to 55% by weight polyamide, 0 to 30% by weight reinforcing material, 0 to 15% by weight elastomer modifier, 40 to 60% by weight magnesium hydroxide, and 0 to 2% by weight processing additives.
Claim 4
Dependent Claim
18 words
The composition of claim 1, wherein the polyamide is a copolyamide based on polyamide 6 or polyamide 66.
Claim 5
Dependent Claim
21 words
The composition of claim 1, wherein the reinforcing material is one or more of glass fibers, mineral fibers, or carbon fibers.
Claim 6
Dependent Claim
13 words
The composition of claim 2, which contains 10-30% by weight of reinforcing material.
Claim 7
Dependent Claim
13 words
The composition of claim 2, which contains 4-10% by weight of elastomer modifier.
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) | 1998-01-02 | 1998-07-04 | 1999-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-02 | 2002-07-04 | 2003-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-02 | 2006-07-04 | 2007-01-03 | $7700.00 | Window Closed / Lapsed |