Basic calcium aluminum hydroxide dicarboxylates, a process for their production and their use
AssigneeBarlocher GmbH
InventorsCoriolan Razvan, Reinhard Beck, Alfred Kurzinger, Michael Rosenthal, Albert W. Purzer
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Abstract
The invention describes basic calcium aluminum hydroxide dicarboxylates of the general formula Ca.sub.x Al.sub.2 (OH).sub.2(x+3-y) A.sub.y .multidot.m H.sub.2 O wherein x means 2 to 12, ##EQU1## m means 0 to 12, and A means an aliphatic, aromatic or heteroaromatic dicarboxylic acid anion or combinations thereof, with the proviso that y.noteq. 1, if x= 2-8 and a process for their production. The compounds according to the invention are particularly suited as stabilizers for halogen-containing thermoplastic resins, in particular PVC.
Claims10
A basic calcium aluminum hydroxide dicarboxylate compound represented by the general formula
- Ca.sub.x Al.sub.2 (OH).sub.2(x+3-y) Ay .multidot.m H.sub.2 O
- wherein
- X is 2 to 12;
- ##EQU3## with the proviso that y.noteq.1 if x=2 to 8;
- m is 0 to 12;
- and
- A is an aliphatic, aromatic or heteroaromatic dicarboxylic acid anion or combination thereof.
Dependencies are inferred from the claim text.