Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
1998-12-04
2001-03-27
Hoke, Veronica P. (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C524S101000, C524S204000
Reexamination Certificate
active
06207735
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a flame retardant and a flame retardant resin composition containing it. The flame retardant and the flame retardant resin composition containing it according to the present invention, are of high performance having excellent flame retardancy, smoke suppressant properties and generating no hazardous gas, and they are useful in a wide range as materials for, e.g., various electric parts, automobile parts, building materials, cables and wire harnesses.
BACKGROUND OF THE INVENTION
Although plastic materials are used in many industrial applications, because of their inflammability, flame retardants are formulated to plastic materials in order to afford them flame retardancy.
Conventional flame retardants include, for example, a phosphorus-containing compound such as a phosphoric acid ester, ammonium polyphosphate or red phosphorus, a halogen-containing compound such as tetrabromobisphenol A, decabromodiphenyloxide or chlorinated paraffin, and a metal compound such as magnesium hydroxide, aluminum hydroxide or zinc borate. Among these, a halogen-containing compound is excellent in flame retardancy and is widely used.
However, a resin formulated with a halogen-containing compound has problems of releasing hazardous halogen-containing gas and generating much smoke on combustion. Generation of hazardous gas and smoke increases the risk of physical disaster danger at the time of fire. Accordingly, safety of the material is an important technology along with the technology for flame retardancy.
Although a phosphorus-containing compound is a material that generates little smoke, for example, ammonium polyphosphate is not necessarily satisfactory from the viewpoint of flame retardancy and water resistance.
Further, a metal compound represented by magnesium hydroxide releases no hazardous gas during thermal decomposition and is a material excellent in the smoke suppressant effect. However, it is not necessarily satisfactory from the viewpoint of the flame retardancy.
The present invention has been made in view of the above problems, and it is an object of the present invention to provide a new high performance flame retardant having an excellent flame retardant and smoke suppressant effect, and a new flame retardant resin composition containing it.
The present inventors have conducted an extensive study to develop a high performance flame retardant to obtain a flame retardant resin composition excellent in flame retardancy and smoke suppressant effect, and as a result, have succeeded in accomplishing the present invention.
SUMMARY OF THE INVENTION
Namely, the present invention provides a flame retardant comprising (A) ethylenediamine-containing zinc phosphate and (B) a metal compound; a flame retardant comprising (A) ethylenediamine-containing zinc phosphate, (B) a metal compound, and (C) a 1,3,5-triazine derivative and/or (D) a phosphorus-containing compound; and a flame retardant comprising (A) ethylenediamine-containing zinc phosphate, (C) a 1,3,5-triazine derivative, and (D) a phosphorus-containing compound; and a flame retardant resin composition containing such a flame retardant.
REFERENCES:
patent: 5498476 (1996-03-01), Tucker et al.
patent: 5994435 (1999-11-01), Kuma et al.
Derwent Publications Ltd., London, GB; AN 97-389417 XP002097809 & JP 09 169784A (Tosoh Corp), Jun. 30, 1997.
Koyama Kenji
Kuma Kimitaka
Okizaki Fumio
Tanaka Yasumi
Hoke Veronica P.
Sughrue Mion Zinn Macpeak & Seas, PLLC
Tosch Corporation
LandOfFree
Flame retardant and flame retardant resin composition... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flame retardant and flame retardant resin composition..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flame retardant and flame retardant resin composition... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2542583