Patent US4185044A successfully refreshed from Google Patents.
US4185044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-proofed unreinforced and unfilled polyamide moulding compositions
Assignee: Bayer AG
•
Filing: 1978-07-25
•
Granted: 1980-01-22
•
Expires: 1998-07-25
Abstract
Abstract Flame-proofed, unreinforced unfilled polyamide moulding compositions containing as a flame-proofing combination a mixture of a phenol/aldehyde condensation resin and red phosphorus.
Inventors
- 👤 Peter Tacke
- 👤 Dieter Neuray
- 👤 Dietrich Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:51
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/10; C08L; C08L77/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
54 words
A flame-proofed, unreinforced, unfilled polyamide moulding composition containing as a flame-proofing combination 0.5 to 25% by weight of a mixture of: a. from 55 to 95% by weight of at least one phenol/aldehyde condensation resin and b. from 5 to 45% by weight of red phosphorus having an average particle size below 200 μum.
Claim 2
Dependent Claim
54 words
A flame-proofed, unreinforced, unfilled polyamide moulding composition containing as a flame-proofing combination 0.5 to 25% by weight of a mixture of: a. from 55 to 95% by weight of at least one phenol/aldehyde condensation resin and b. from 5 to 45% by weight of red phosphorus having an average particle size below 200 μum.
Claim 3
Dependent Claim
21 words
A flame -proofed moulding composition as claimed in claim 1, containing from 3 to 12% by weight of the flame-proofing combination.
Claim 4
Dependent Claim
30 words
A flame-proofed moulding composition as claimed in claim 1 containing a mixture of 60 to 80% by weight of component (a) and 20 to 40% by weight of component (b).
Claim 5
Dependent Claim
17 words
A flame-proofed moulding composition as claimed in claim 1 wherein the phenol/aldehyde condensation resin is a novolak.
Claim 6
Dependent Claim
24 words
A polyamide moulding composition as claimed in claim 1, wherein the phenol/aldehyde condensation resin contains up to 25% by weight of a cross-linking agent.
Claim 7
Dependent Claim
59 words
A polyamide moulding composition as claimed in claim 1, wherein up to 15% by weight of a metal compound is added to the phenol/aldehyde condensation resin, said metal compound being an oxide, hydroxide, carbonate, acetate, formate, phosphate or borate of an alkali metal, an alkaline earth metal, zinc, cadmium, tin, lead, antimony, aluminum, copper, manganese iron, cobalt or nickel.
Claim 8
Dependent Claim
22 words
A polyamide moulding composition as claimed in claim 5, wherein the crosslinking agent is a polyfunctional epoxide, phosphoric acid or boric acid.
Claim 9
Dependent Claim
17 words
A polyamide moulding composition as claimed in claim 6, wherein the metal compound is a metal oxide.
Claim 10
Dependent Claim
29 words
A light coloured, flame-proofed, unreinforced, unfilled polyamide moulding composition as claimed in claim 1 containing a white pigment in quantities of 2 to 10 times the quantity of phosphorus.
References Cited (Backward Citations)
US2378667A
Cited
US3778407A
Cited
US3951908A
Cited
US4110277A
Cited
US3806488A
Cited
US3847861A
Cited
US3878162A
Cited
US3808289A
Cited
US3931081A
Cited
US4067897A
Cited
US4092284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-21 | 1983-07-23 | 1984-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-21 | 1987-07-23 | 1988-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-21 | 1991-07-23 | 1992-01-22 | $7700.00 | Window Closed / Lapsed |