Plasticizers cyclohexanoate esters

Use of esters of cyclohexanone polycarboxylic acids, such as di-(2-ethyl-hexyl) cyclohexanoic acid ester, enables production of materials having comparable mechanical properties with less PVC. It also increases UV stability, improves low temperature properties, and reduces smoke on burning. Highly flexible and semi-rigid goods can be manufactured with these plasticizers. This film is specially suitable for production of blood bags. 

DOP - di-(2-ethylhexyl) phthalate, DEHCH - Cg alcohol ester of cyclohexanoic acid, DDSIP -diisononyl phthalate, DINCH - diisononyl ester of cyclohexanoic acid, DIDP - diisodecyl phthalate, DfDCH - Cjo alcohol ester of cyclohexanoic acicf (PVC 100, plasticizer 50, CaCOj 10, LZB 320 2) (PVC 100, plasticizer DOP 50, DEHCH 50, DINP 53, DINCH 54.5, DIDP 55, DIDCH 57.5, LZB 722 2, ESBO 0.5)... 

Citrates are fast-fusing plasticizers, especially when compared to many of the phthalate alternatives. Unfortunately citrates are not as permanent because of high volatility losses, and the finished PVC products do not remain as flexible for as long as those prepared from more permanent plasticizers. Citrates are often used in blends with the harder-to-process terephthalate or cyclohexanoate plasticizers, but in these applications, because of costs, dibenzoate plasticizers may be preferred. Citrate esters also find uses with other plastics such as acrylics, cellulosic polymers, and vinyl acetate. Acetylated tributyl citrate (ATBC) does have a number of food contact and medical approvals and is commonly found in toys, often in combination with DEHTP or DC9CH. 

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