EP Patent

EP0237135A2 — Thermally stable diphosphonate-type flame retardant additive for plastics

Assigned to Akzo NV · Expires 1987-09-16 · 39y expired

What this patent protects

Flame retardant plastic compositions are prepared by incorporating into a polymer from 1-30% by weight of a flame retardant having the structural formula: …<CHEM>… …<??>This class of flame retardant shows exceptional high temperature stability and permits incorporatio…

USPTO Abstract

Flame retardant plastic compositions are prepared by incorporating into a polymer from 1-30% by weight of a flame retardant having the structural formula: …<CHEM>… …<??>This class of flame retardant shows exceptional high temperature stability and permits incorporation of the flame retardant into the polymer by hot milling at temperatures up to about 350 DEG C.

Drugs covered by this patent

Patent Metadata

Patent number
EP0237135A2
Jurisdiction
EP
Classification
—
Expires
1987-09-16
Drug substance claim
No
Drug product claim
No
Assignee
Akzo NV
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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