Polymerizable monomers

Abstract

Novel polymerizable monomers which are ethylenically unsaturated esters of the formula: ##STR1## wherein R 4 comprises a polymerizable ethylenic double bond. Homopolymers and copolymers of the monomers are disclosed and in one embodiment provide water-dispersible film-forming polymer which may be electrophoretically deposited on a conducting substrate.

We claim: 
     
       1. An ethylenically unsaturated monomer of the formula: ##STR9## wherein n is an integer having the value 2 to 18 inclusive, R 1  is a saturated or unsaturated linear or branched hydrocarbon chain containing 12 to 18 inclusive carbon atoms, R 2  is a hydrogen atom, a methyl, hydroxy alkyl, saturated or unsaturated alkyl group containing 2 to 18, inclusive carbon atoms, an alkyl-aryl or cycloalkyl group or a group of the structure: ##STR10## wherein R 3  is a hydrogen atom, a methyl, hydroxy alkyl, alkyl-aryl or cycloaryl group or a saturated or unsaturated alkyl group containing 2 to 18 inclusive carbon atoms and R 4  is an ethylene derivative of the structure: ##STR11## wherein R 5  may be hydrogen, chlorine, methyl, methyl carboxy or methyl carboxy ester and R 6  may be hydrogen, methyl, carboxyl, carboxy ester or amide. 
     
     
       2. An ethylenically unsaturated monomer according to claim 1 in which R 1  is at least one member selected from the group consisting of a lauryl, myristyl, palmityl, stearyl, oleyl, linoleyl and linolenyl entity. 
     
     
       3. An ethylenically unsaturated monomer according to claim 1 in which R 4  is selected from the group consisting of an acrylate, maleate, fumarate, maleamate, chlor-maleate, methacrylate, itaconate and aconitate entity.  .[.4. An addition polymer comprising monomer residues of the structure: ##STR12## wherein R 1 , R 2 , R 5 , R 6  and n have the meanings 
     
     
        according to claim 1..]. 5. A film-forming polymer comprising at least 5% by weight of monomer residues according to claim .[.4.]. .Iadd.8.Iaddend.. 
     
     
        . A solution or dispersion of a polymer according to claim .[.5.]. .Iadd.8 .Iaddend.in an aqueous liquid.Iadd., said polymer being a copolymer .Iaddend.characterized in that the said .[.polymer.]. .Iadd.copolymer .Iaddend.contains carboxyl groups .Iadd.provided by the selected comonomer and said carboxyl groups are .Iaddend.neutralised by at least one water-soluble base selected from the group consisting of ammonia, monoethanolamine, diethanolamine, triethanolamine, N-methyl ethanolamine, N-aminoethyl ethanolamine, ethylene diamine, diethylenetriamine, propylene diamine, triethylamine, dimethyl aminoethanol, sodium hydroxide and 
     
     
        potassium hydroxide. 7. A coating bath for use in electrodeposition comprising a solution or dispersion of colloidal dimensions of a polymer according to claim 6 in which the acid value of the carboxyl group-containing polymer is in the range of 30-200 mg. KOH and 30-100% of the carboxyl groups are neutralised in the coating bath by the water-soluble base. .Iadd. 8. An addition polymer comprising monomer residues of the structure: ##STR13## wherein R 1 , R 2  and n have the meanings according to claim 1, R 5  is hydrogen, chlorine, methyl or methyl carboxy ester and R 6   
     
     
        is hydrogen, methyl, carboxy ester or amide. .Iaddend. .Iadd. 9.  An addition polymer selected from the group consisting of a homopolymer of a monomer residue of the structure: ##STR14## wherein R 1 , R 2 , and n have the meanings according to claim 1, R 5  is hydrogen, chlorine, methyl or methyl carboxy ester and R 6  is hydrogen, methyl, carboxy ester or amide and copolymers of such residue and a lower saturated alcohol ester of acrylic or methacrylic acid. .Iaddend.