US4727102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-extinguishing polymeric products based on polyolefins
Assignee: VAMP Srl
•
Filing: 1985-07-15
•
Granted: 1988-02-23
•
Expires: 2005-07-15
Abstract
Abstract Polyolefins which are made self-extinguishing by means of flame-retarding compositions comprising ammonium polyphosphate, melamine cyanurate and a hydroxyalkyl-derivative of isocyanuric acid at least partially in the form of a homopolymer.
Inventors
- 👤 Luciano Scarso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:07
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K3/00; C08K3/32; C08K5/3492; C08K5/34928
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
30 words
In a flame retardant additive composition for polyolefins of the type comprising ammonium polyphosphate and tris-(2-hydroxyethyl)-isocyanurate in the form of a homopolymer, the improvement comprising said composition additionally including melamine-cyanurate.
Claim 2
Dependent Claim
30 words
In a flame retardant additive composition for polyolefins of the type comprising ammonium polyphosphate and tris-(2-hydroxyethyl)-isocyanurate in the form of a homopolymer, the improvement comprising said composition additionally including melamine-cyanurate.
Claim 3
Dependent Claim
49 words
The composition according to claim 1, wherein the amount of said ammonium polyphosphate is in the range of 40 to 80% by weight, said tris-(2-hydroxyethyl)-isocyanurate homopolymer is in the range of 10 to 30% by weight and said melamine-cyanurate is in the range of 10 to 30% by weight.
Claim 4
Dependent Claim
32 words
A self-extinguishing polyolefin composition, comprising: (A) 5-50% by weight of ammonium polyphosphate; (B) 1-25% by weight of a homopolymer of tris-(2-hydroxyethyl)-isocyanurate, the improvement comprising said polyolefin additionally including (C) 1-25% of melamine-cyanurate.
Claim 5
Dependent Claim
32 words
A self-extinguishing polyolefin composition, comprising: (A) 5-50% by weight of ammonium polyphosphate; (B) 1-25% by weight of a homopolymer of tris-(2-hydroxyethyl)-isocyanurate, the improvement comprising said polyolefin additionally including (C) 1-25% of melamine-cyanurate.
References Cited (Backward Citations)
US3108115A
Cited
US3293224A
Cited
US3927145A
Cited
US4180496A
Cited
US4185004A
Cited
FR2403357A1
Cited
US4198493A
Cited
US4341880A
Cited
US4514328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-22 | 1991-08-24 | 1992-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-22 | 1995-08-24 | 1996-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-22 | 1999-08-24 | 2000-02-23 | $7700.00 | Window Closed / Lapsed |