Nitrous bridged derivatives of 6H-dibenz[c,e][1,2]-oxaphosphorine-6-oxides, process for the preparation and use thereof
AssigneeSchill + Seilacher “Struktol” Aktiengesellschaft
InventorsBerthold Just, Uwe Dittrich, Holger Keller, Manfred Doering, Uwe Storzer, Michael Ciesielski
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Abstract
Nitrous bridged derivatives of 6H-dibenz[c,e][1,2]-oxaphosphorine-6-oxides, process for the preparation and use thereof. The invention refers to nitrous bridged derivatives of 6H-dibenz[c,e][1,2]-oxaphosphorine-6-oxides, a process for the preparation thereof and their use as flameproofing agents for polymers such as polyesters, polyamides, polycarbonates, polystyrenes, polyethylene, polypropylene, phenolic and epoxy resins. The derivatives have the Formulae I or II:
Claims23
A process for preparation of nitrous bridged derivatives of 6H-dibenz[c,e][1,2]-oxaphosphorine-6-oxides of Formulae (I) and (II)
- wherein R is one of the following radicals:
- wherein l is an integer of from 2 to 10, m and p are integers of from 1 to 20, n and o are each 0 or are integers from 1 to 20 and R′ is hydrogen or an alkyl group wherein:
- (a) a 6-alkoxy-6H-dibenz[c,e][1,2]-oxaphosphorine is reacted with a bishydroxyalkyl amine or a polyvalent alcohol formed by polycondensation of 1,3,5-tris(2-hydroxyethyl)cyanuric acid, to form an intermediate product and
- (b) said intermediate product obtained in step (a) is converted by adding a catalytic amount of an alkylating agent to a nitrous bridged 6H-dibenz[c,e][1,2]-oxaphosphorine-6-oxide derivative of the Formula (I) or (II).
Nitrous bridged derivatives of 6H-dibenz[c,e][1,2]-oxaphosphorine-6-oxides of the Formulae (I) and (II)
- wherein R is one of the following radicals:
- l an integer from 2 to 10, m and p are integers from 1 to 20, n and o are each 0 or integers from 1 to 20 and R′ is hydrogen or alkyl.
An oligomer of the 1,3,5-tris(2-hydroxyethyl)cyanuric acid of the Formula (IV)
- wherein m is an integer from 1 to 20 and n and o are 0 or integers from 1 to 20.
Dependencies are inferred from the claim text.