Pentaerythritol tetraacrylate (PETA, sometimes PETTA, PETRA) is an organic compound. It is a tetrafunctional acrylate ester used as a monomer in the manufacture of polymers.[1] As it is a polymerizable acrylate monomer, it is nearly always supplied with an added polymerisation inhibitor, such as MEHQ (monomethyl ether hydroquinone).
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| Names | |
|---|---|
| Preferred IUPAC name 2,2-Bis{[(prop-2-enoyl)oxy]methyl}propane-1,3-diyl di(prop-2-enoate) | |
| Identifiers | |
3D model (JSmol) | |
| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | 100.023.313 |
| EC Number |
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PubChem CID | |
| UNII | |
CompTox Dashboard (EPA) | |
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| Properties | |
| C17H20O8 | |
| Molar mass | 352.339 g·mol−1 |
| Hazards | |
| GHS labelling: | |
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| Warning | |
| H315, H317, H319 | |
| P261, P264, P272, P280, P302+P352, P305+P351+P338, P321, P332+P313, P333+P313, P337+P313, P362, P363, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Uses
PETA is part of a family of acrylates used in epoxy resin chemistry and ultraviolet cure of coatings. Similar monomers used are 1,6-hexanediol diacrylate and TMPTA trimethylol propane triacrylate. It is a derivative of pentaerythritol[2]One of the key uses of the material is in polymeric synthesis where it can form micelles and block copolymers.[3][4] The molecule's acrylate group functionality enables the molecule to do the Michael reaction with amines. It is therefore sometimes used in epoxy chemistry enabling a large reduction in cure time.[5] As the molecule has 4 functional acrylate groups it confers high cross-link density. Ethoxylation maybe used to produce ethoxylated versions which find use in electron beam curing.[6] The material also has pharmaceutical uses[7]