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As butanone dissolves polystyrene and many other plastics, it is sold as "model cement" for use in connecting parts of scale model kits. Though often considered an adhesive , it is functioning as a welding agent in this context.
Plastic Cement may refer to: Cement, in the US where it refers to certain formulations of Masonry Cement; Dichloromethane, used to solvent weld some thermoplastics including acrylic; Butanone, model cement is a thick mixture with polystyrene; Tetrahydrofuran, the main solvent in PVC cement
Butanone#As a plastic welding agent To a section : This is a redirect from a topic that does not have its own page to a section of a page on the subject. For redirects to embedded anchors on a page, use {{ R to anchor }} instead .
Almost all model kits on the market were plastic, necessitating paints (the square, glass Testor paint bottles were sold in almost every dime store, department store, hardware store, toy store and hobby store in the US in the 1960s, making them truly ubiquitous) and glues different from those used for wooden models.
Polystyrene cement/Butanone/methyl ethyl ketone (MEK) dissolves polystyrene it is volatile Vapour is heavier-than-air and explosive. Toxic, neuropsychological effects. Rapidly absorbed through undamaged skin and lungs. Produces toxic ozone. [2] Dichloromethane: Dissolves: Polycarbonate
Phase behavior Triple point: 186.5 K (–86.5 °C), ? Pa Critical point: 533 K (260 °C), 4.002 MPa Std enthalpy change of fusion, Δ fus H o: 8.44 kJ/mol Std entropy change
Calcium aluminates can form complex salts in combination with different types of anions.Two series of calcium aluminates are known in cement chemistry: AFm and AFt phases, being respectively mono- or tri-substituted with a given divalent anion X (e.g. SO 2− 4, CO 2− 3, or hosting a divalent impurity such as SeO 2− 4 [3]...), or with two units of a monovalent anion, e.g. OH −, Cl − ...
Butyraldehyde is produced almost exclusively by the hydroformylation of propylene: . CH 3 CH=CH 2 + H 2 + CO → CH 3 CH 2 CH 2 CHO. Traditionally, hydroformylation was catalyzed by cobalt carbonyl but rhodium complexes are more common.