This invention relates to plastic additives which are useful as nucleating agents and which are especially useful for improving the optical properties of polymeric materials. More particularly, this invention relates to certain bis-halogen-alkyl-benzylidene alditol acetals and polymer compositions thereof which are useful as materials for food or cosmetic containers and packaging. These bis-halogen-alkylbenzylidene alditol acetals are also useful as gelling agents for organic solvents, particularly those used in the preparation of antiperspirant gel sticks.

Esta invenção relaciona-se aos aditivos plásticos que são úteis como agentes nucleating e que são especial úteis para melhorar as propriedades óticas de materiais polymeric. Mais particularmente, esta invenção relaciona-se aos determinados acetans do alditol do bis-halogênio-bis-halogen-alkyl-benzylidene-benzylidene e composições do polímero disso que são úteis como materiais para o alimento ou os recipientes e empacotar do cosmético. Estes acetans do alditol do bis-halogênio-alkylbenzylidene são também úteis como agentes gelling para solventes orgânicos, particularmente aqueles usados na preparação de varas do gel do antiperspirant.

 
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