US4877823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireproofed thermoplastic molding materials containing red phosphorus and based on polyesters or polyamides
Assignee: BASF SE
•
Filing: 1988-04-19
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Granted: 1989-10-31
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Expires: 2008-04-19
Abstract
Abstract Fireproofed thermoplastic molding materials which contain red phosphorus as a flame-proofing agent are obtainable by mixing (A) from 5 to 95% by weight of a polyamide or of a polyester or of a mixture of these, (B) from 5 to 95% by weight of an elastomer dispersion containing, as essential components, (b1) from 5 to 75% by weight of an elastomer prepared by emulsion polymerization, (b2) from 10 to 70% by weight of red phosphorus, p2 (b3) from 10 to 80% by weight of water and (b4) from 0.1 to 5% by weight of dispersant, and (C) from 0 to 60% by weight of fibrous or particulate fillers or a mixture of these, the total content of red phosphorus in the molding material being from 3 to 20% by weight, based on the total weight of the molding material, and the elastomer composition being introduced into a melt of the polyamide or of the polyester or of a mixture of these.
Inventors
- 👤 Christoph Plachetta
- 👤 Graham E. McKee
- 👤 Hans-Peter Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:32
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08K; C08K3/00; C08K3/02; C08L77/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
148 words
A fireproofed thermoplastic molding material, which contains red phosphorus as a flameproofing agent and which is obtainable by mixing: (a) from 5-95% by weight of a polyamide or a polyester or a combination thereof, (b) from 5-95% by weight of an elastomer dispersion containing, an essential components: (i) from 5-75% by weight of an elastomer prepared by emulsion polymerization, (ii) from 10-70% by weight of red phosphorus, (iii) from 10-80% by weight of water, and (iv) from 0.1-5% by weight of a dispersing agent capable of dispersing said elastomer, and (c) from 0-60% by weight of fibrous or particulate fillers or a mixture thereof, wherein the total content of red phosphorus in the molding material is from 3-20% by weight, based on the total weight of the molding material, said elastomer composition being introduced into a melt of the polyamide or of the polyester or a combination thereof.
Claim 2
Dependent Claim
148 words
A fireproofed thermoplastic molding material, which contains red phosphorus as a flameproofing agent and which is obtainable by mixing: (a) from 5-95% by weight of a polyamide or a polyester or a combination thereof, (b) from 5-95% by weight of an elastomer dispersion containing, an essential components: (i) from 5-75% by weight of an elastomer prepared by emulsion polymerization, (ii) from 10-70% by weight of red phosphorus, (iii) from 10-80% by weight of water, and (iv) from 0.1-5% by weight of a dispersing agent capable of dispersing said elastomer, and (c) from 0-60% by weight of fibrous or particulate fillers or a mixture thereof, wherein the total content of red phosphorus in the molding material is from 3-20% by weight, based on the total weight of the molding material, said elastomer composition being introduced into a melt of the polyamide or of the polyester or a combination thereof.
Claim 3
Dependent Claim
20 words
The fireproofed thermoplastic molding material of claim 1, wherein said polyamide comprises lactams having from 7-13 atoms in the ring.
Claim 4
Dependent Claim
22 words
The fireproofed thermoplastic molding material of claim 2, wherein said polyamide is selected from the group consisting of polycaprolactam, polycapryllactam and polylaurolactam.
Claim 5
Dependent Claim
24 words
The fireproofed thermoplastic molding material of claim 1, wherein said polyester comprises a polyester of terephthalic acid and a C 2 -C 6 diol.
Claim 6
Dependent Claim
34 words
The fireproofed thermoplastic molding material of claim 1, wherein said polyamide or polyester or combination thereof is used in the amount of 10-90% by weight, based on the total weight of the molding material.
Claim 7
Dependent Claim
28 words
The fireproofed thermoplastic molding material of claim 1, wherein said elastomer is a homogeneous elastomer or a shell-structured elastomer comprising a core rubber phase and an outer shell.
Claim 8
Dependent Claim
31 words
The fireproofed thermoplastic molding material of claim 1, wherein said red phophorus is used in the amount of 20-70% by weight, based on the total amount of the aqueous elastomer composition.
Claim 9
Dependent Claim
22 words
The fireproofed thermoplastic molding material of claim 1, wherein said red phosphorus has a number average particle size of from 0.0001-0.5 mm.
Claim 10
Dependent Claim
16 words
The fireproofed thermoplastic molding material of claim 1, which comprises from 12-70% by weight of water.
Claim 11
Dependent Claim
58 words
The fireproofed thermoplastic molding material of claim 1, wherein said dispersing agent is selected from the group consisting of alkali metal and ammonium salts of alkyl-, aryl-, alkaryl- and aralkyl sulfonates, sulfates, polyether sulfates, fatty acid and hydroxy-substituted fatty acids or esters thereof, alcohols, amines and amides, alkylphenols and organophosphoric acids and alkali metal or ammonium salts thereof.
Claim 12
Dependent Claim
18 words
The fireproofed thermoplastic molding material of claim 1, which comprises from 15 to 55% by weight of water.
Claim 13
Dependent Claim
20 words
The fireproofed thermoplastic molding material of claim 1, wherein said fibrous fillers comprise glass fibers, carbon fibers or fibrous silicates.
Claim 14
Dependent Claim
139 words
A process for the preparation of a fireproofed thermoplastic molding material, which contains red phosphorus as a flameproofing agent, which comprises mixing into a melt of a polyamide or of a polyester or of a combination thereof, an aqueous elastomer composition which contains, as essential components: (i) from 5-75% by weight of an elastomer prepared by emulsion polymerization, (ii) from 10-70% by weight of red phosphorus, (iii) from 10-80% by weight of water, and (iv) from 0.1-5% by weight of a dispersing agent capable of dispersing said elastomer, and wherein the amount of polyamide or polyester or combination thereof and said elastomer composition is each from 5-95% by weight, based on the total weight of the molding material, and the amount of said red phosphorus is from 3-20% by weight, based on the total weight of the molding material.
Claim 15
Dependent Claim
139 words
A process for the preparation of a fireproofed thermoplastic molding material, which contains red phosphorus as a flameproofing agent, which comprises mixing into a melt of a polyamide or of a polyester or of a combination thereof, an aqueous elastomer composition which contains, as essential components: (i) from 5-75% by weight of an elastomer prepared by emulsion polymerization, (ii) from 10-70% by weight of red phosphorus, (iii) from 10-80% by weight of water, and (iv) from 0.1-5% by weight of a dispersing agent capable of dispersing said elastomer, and wherein the amount of polyamide or polyester or combination thereof and said elastomer composition is each from 5-95% by weight, based on the total weight of the molding material, and the amount of said red phosphorus is from 3-20% by weight, based on the total weight of the molding material.
Claim 16
Dependent Claim
16 words
A molding comprising the thermoplastic molding material as claimed in claim 1 as an essential component.
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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) | 1992-10-30 | 1993-05-01 | 1993-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-30 | 1997-05-01 | 1997-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-30 | 2001-05-01 | 2001-10-31 | $7700.00 | Window Closed / Lapsed |