Self-extinguishing polymeric products based on polyolefins

• US 4,727,102 A
• Filed: 07/15/1985
• Issued: 02/23/1988
• Est. Priority Date: 05/14/1985
• Status: Expired due to Fees

• Current Assignee: V.A.M.P. S.R.1.
• Original Assignee: V.A.M.P. SRL
• Inventors: Scarso, Luciano
• Primary Examiner(s): Foelak, Morton
• Assistant Examiner(s): SANDERS, KRIELLION ANTIONETTE
• Application Number:
  US06/754,916
• Time in Patent Office: 953 Days
• Field of Search: 252/609, 524/100, 524/101, 524/304, 524/310, 524/399, 524/416, 524/502, 524/516, 525/227, 523/201, 523/204, 523/206, 523/205
• US Class Current: 524/100
• CPC Class Codes: C08K 3/32 Phosphorus-containing compounds
• CPC Class Codes: C08K 5/3477 Six-membered rings
• CPC Class Codes: C08K 5/34928 Salts
• CPC Class Codes: C08L 23/02 not modified by chemical after-treatment

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.

Claims

1. 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.

2. 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.

3. 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.