US4137212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flameproofed nylon molding compositions
Assignee: BASF SE
•
Filing: 1977-11-30
•
Granted: 1979-01-30
•
Expires: 1997-11-30
Abstract
Abstract A flameproofed nylon molding composition which can be processed by thermoplastic methods and which contains, as the flameproofing agent, from 5 to 30% by weight of brominated styrene oligomers and a synergistic metal oxide. The compositions may be used for the manufacture of injection moldings for the electrical industry.
Inventors
- 👤 Rainer Theysohn
- 👤 Klaus Penzien
- 👤 Wolfgang Seydl
- 👤 Rolf Wurmb
- 👤 Horst Reimann
- 👤 Claus Cordes
- 👤 Hans-Josef Sterzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:49
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/02; C08K5/03; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08L; C08L25/00; C08L25/18; C08L77/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
83 words
A synthetic linear polyamide molding composition which can be processed by thermoplastic methods and which contains a halogen-containing flameproofing agent and a synergistic metal oxide, with or without a filler, wherein the flameproofing agent comprises from 5 to 30% by weight, based on the total molding composition, of brominated styrene oligomers, said oligomers containing from 40 to 80% by weight of bromine, having a mean degree of polymerization of from 3 to 90, and having been manufactured by nuclear bromination of styrene oligomers.
Claim 2
Dependent Claim
83 words
A synthetic linear polyamide molding composition which can be processed by thermoplastic methods and which contains a halogen-containing flameproofing agent and a synergistic metal oxide, with or without a filler, wherein the flameproofing agent comprises from 5 to 30% by weight, based on the total molding composition, of brominated styrene oligomers, said oligomers containing from 40 to 80% by weight of bromine, having a mean degree of polymerization of from 3 to 90, and having been manufactured by nuclear bromination of styrene oligomers.
Claim 3
Dependent Claim
25 words
A synthetic linear polyamide molding composition as set forth in claim 1, which contains from 2 to 15% by weight of the synergistic metal oxide.
Claim 4
Dependent Claim
37 words
A synthetic linear polyamide molding composition as set forth in claim 1, wherein the metal oxide is antimony oxide, lead oxide, zinc oxide or iron oxide, which may or may not be precipitated on an inorganic carrier.
Claim 5
Dependent Claim
62 words
A synthetic linear polyamide molding composition as set forth in claim 1, which contains from 5 to 30 percent by weight of brominated styrene oligomers, from 2 to 15 percent by weight of the synergistic metal oxide and from 1 to 30 percent by weight of a polymeric organic filler which prevents dripping of burning particles in the event of a fire.
Claim 6
Dependent Claim
33 words
A synthetic linear polyamide molding composition as set forth in claim 4, wherein the polmeric organic filler is polytetrafluoroethylene or a graft copolymer of one or more vinyl monomers and a rubbery polymer.
Claim 7
Dependent Claim
49 words
A synthetic linear polyamide molding composition as set forth in claim 1, which contains from 5 to 30 percent by weight of brominated styrene oligomers, from 2 to 15 percent by weight of the synergistic metal oxide and from 5 to 60 percent by weight of an inorganic filler.
Claim 8
Dependent Claim
22 words
A synthetic linear polyamide molding composition as set forth in claim 6, wherein the inorganic filler is a silicate or a carbonate.
Claim 9
Dependent Claim
20 words
A synthetic linear polyamide molding composition as set forth in claim 6, wherein the inorganic filler consists of glass fibers.
Claim 10
Dependent Claim
42 words
A synthetic linear polyamide molding composition as set forth in claim 6, which contains as the inorganic filler from 10 to 40 percent by weight of glass fibers and from 2 to 20 percent by weight of a skeleton-forming non-fibrous inorganic filler.
Claim 11
Dependent Claim
24 words
A synthetic linear polyamide molding composition as set forth in claim 9, wherein the skeleton-forming filler is kaolin, talc, chalk, quartz, mica or bentonite.
Claim 12
Dependent Claim
23 words
A synthetic linear polyamide as set forth in claim 1, wherein nylon 6 to nylon 6,6 is used as the synthetic linear polyamide.
Claim 13
Dependent Claim
30 words
A synthetic linear polyamide molding composition as set forth in claim 1, wherein the brominated styrene oligomers consist predominantly of polymerized dibromostyrene, the bromine being introduced before or after polymerization.
References Cited (Backward Citations)
US3347822A
Cited
US3287288A
Cited
US3474067A
Cited
US3418267A
Cited
US3630988A
Cited
US3965197A
Cited
US3810861A
Cited
US3842029A
Cited
US3898194A
Cited
US3988284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |