21282-97-3

Basic information

• Product Name: 2-(METHACRYLOYLOXY)ETHYL ACETOACETATE
• Synonyms: 2-(METHACRYLOYOXY)ETHYLACETOACETATE;2-(METHACRYLOYLOXY)ETHYL ACETOACETATE;2-[(2-METHYL-1-OXO-2-PROPENYL)OXY]ETHYL 3-OXOBUTANOATE;(2-ACETOACETOXY)ETHYL METHACRYLATE;2-(ACETOACETYLOXY)ETHYL METHACRYLATE;ACETOACETIC ACID 2-(METHACRYLOYLOXY)ETHYL ESTER;ACETOACETOXY ETHYL 2-METHYLACRYLATE;ACETOACETOXYETHYL METHACRYLATE
• CAS NO: 21282-97-3
• Molecular Formula: C₁₀H₁₄O₅
• Molecular Weight: 214.22
• EINECS: 244-311-1
• Product Categories: monomer
• Mol File: 21282-97-3.mol
• Article Data: 4

Chemical Properties

• Melting Point: <25 °C
• Boiling Point: 100 °C0.8 mm Hg(lit.)
• Flash Point: >230 °F
• Appearance: Clear liquid
• Density: 1.122 g/mL at 25 °C(lit.)
• Vapor Pressure: 0.24Pa at 25℃
• Refractive Index: n20/D 1.456
• Solubility: Insoluble in water
• PKA: 10.16±0.46(Predicted)
• Water Solubility: 18.5g/L at 25℃
• BRN: 2099809
• CAS DataBase Reference: 2-(METHACRYLOYLOXY)ETHYL ACETOACETATE(CAS DataBase Reference)
• NIST Chemistry Reference: 2-(METHACRYLOYLOXY)ETHYL ACETOACETATE(21282-97-3)
• EPA Substance Registry System: 2-(METHACRYLOYLOXY)ETHYL ACETOACETATE(21282-97-3)

Safety Data

• Hazard Codes: T,Xi
• Statements: 36/37/38-43
• Safety Statements: 26-36/37-45-36
• RIDADR: UN 2810 6.1/PG 3
• WGK Germany: 3
• RTECS: AK5600000
• Hazardous Substances Data: 21282-97-3(Hazardous Substances Data)

Usage

Uses

Different sources of media describe the Uses of 21282-97-3 differently. You can refer to the following data:
1. LONZAMON(R) AAEMA is a special methacrylic ester monomer with a reactive methylene group. It is suitable as comonomer for adhesives and coatings as well as copolymer for emulsion polymerisation.
2. 2-(Methacryloyloxy)ethyl acetoacetate is a methylene active compound that may be used in the synthesis of 2-(methacryloyloxy)ethyl 6-methyl-2-oxo-4-phenyl-1,2,3,4- tetrahydropyrimidine-5-carboxylate. It may be used as a polymerizable chelating agent for metal alkoxides to form polymerizable oxide precursors.

Flammability and Explosibility

Nonflammable

InChI:InChI=1/C6H10O3.C4H6O3/c1-3-5(7)4(2)6(8)9;1-3(5)2-4(6)7/h7H,3H2,1-2H3,(H,8,9);2H2,1H3,(H,6,7)/p-2/b5-4+;

Upstream product

• 480436-46-2 S-1-butyl-S'-(α-methyl-α'-acetic acid)trithiocarbonate 
• 141-32-2 acrylic acid n-butyl ester 
• 80-62-6 methacrylic acid methyl ester 
• 79-10-7 acrylic acid 
• 1041193-98-9 4,4'-azobis (4-cyanopentanoic acid) 
• 868-77-9 2-methyl-2-propenoic acid 2-hydroxyethyl ester 
• 141-97-9 ethyl acetoacetate 
• 5394-63-8 2,2,6-trimethyl-4H-1,3-dioxin-4-one 

Downstream Products

• 868-77-9 2-methyl-2-propenoic acid 2-hydroxyethyl ester 
• 67-64-1 acetone 

Relevant articles and documents

Preparation method of acetoacetoxy ethyl methacrylate

The invention discloses a preparation method of acetoacetoxy ethyl methacrylate, and the method is as follows: under the conditions of light and temperature of 20-100 DEG C, taking a reaction system comprising hydroxyethyl methylacrylate, a polymerization inhibitor, a catalyst and a diketene adduct for full reaction, after the reaction is complete, cooling the system to temperature of below 60 DEG C, then adding pure water, mixing evenly, standing for layering, and taking subnatant to obtain the acetoacetoxy ethyl methacrylate. The method has the advantages of simple process, simple post-treatment, high product yield, high product purity and stable product quality.

POLYMER PARTICLES

The present invention relates to a method of forming polymer on the surface of polymer particles, the method comprising: (i) providing a dispersion comprising a continuous aqueous phase, a dispersed organic phase comprising one or more ethylenically unsaturated monomers, and a RAFT agent as a stabiliser for said organic phase; (ii) polymerising the one or more ethylenically unsaturated monomers under the control of the RAFT agent to form an aqueous dispersion of seed polymer particles; (iii) crosslinking the seed polymer particles; (iv) swelling the crosslinked seed particles with one or more ethylenically unsaturated monomers to form an aqueous dispersion of monomer swollen crosslinked seed polymer particles; (v) increasing the temperature of the monomer swollen crosslinked seed polymer particles to expel at least some of the monomer therein onto the surface of the particles; and polymerising at least the expelled monomer to form polymer on the surface of the particles.