Acrylic esters of 2-cyano-2, 4 pentenedioic acid
View Patent ↗The invention relates to reactive monomers containing 2-cyanopenta-2,4-dienoate and methacrylic or acrylic double bonds in their molecules. The reactive monomers are easily polymerizable in a variety of ways. The polymerized reactive monomers can form strong adhesive bonds between a variety of substrates. The adhesive bonds are water and humidity resistant, heat resistant, impact and peel resistant and can sustain large loads and stresses. The polymerized reactive monomers are applicable as structural and industrial adhesives, medical and surgical adhesives and optical fiber coatings, and can be used in the manufacture of positive or negative photo or electron beam resists.
1. Adhesive and coating compositions containing reactive monomers of the formula:
wherein R 1 is H or CH 3 and R 2 is a substituted or unsubstituted alkyl, alkenyl, alkynyl, alkoxyalkyl, poly(oxyalkyl), aryl, cycloalkyl, heterocyclyl radical wherein the substituent when present is at least one alkyl, alkenyl, alkynyl, alkoxyalkyl, poly(oxyalkyl), aryl, cycloalkyl, heterocyclyl radical or halogen and wherein the monomer is a liquid at ambient temperature.
2. A reactive monomer composition comprising:
the reactive monomer of the formula:
wherein R 1 is H or CH 3 and R 2 is a substituted or unsubstituted alkyl, alkenyl, alkynyl, alkoxyalkyl, poly(oxyalkyl), aryl, cycloalkyl, heterocyclyl radical wherein the substituent when present is at least one alkyl, alkenyl, alkynyl, alkoxyalkyl, poly(oxyalkyl), aryl, cycloalkyl, heterocyclyl radical or halogen and wherein the monomer is a liquid at ambient temperature; and
a stabilizer against polymerization,
wherein the stabilizer is a free radical polymerization inhibitor,
present in an amount of from 0.001% to 1% by weight of the monomer or an anionic polymerization inhibitor present in an amount of from 0.00001% to 1% by weight of the monomer.
3. Compositions based on reactive monomers of claim 1 containing polymeric thickeners, viscosity regulators, plasticizers thixotropic agents, compatibilizers, adhesion promoters, pigments, colourants, fillers, deodorants and perfumes.
4. Compositions based on reactive monomers of claim 1 containing other monomers with a reactive bond, including but not limited to cyanoacrylates.
5. The reactive monomer composition according to claim 2 , wherein the free-radical polymerization inhibitor is hydroquinone, p-methoxyphenol, or t-butyl cathecol.
6. The reactive monomer composition according to claim 2 , wherein the anionic polymerization inhibitor is sulphur dioxide, hydrogen fluoride, phosphoric acid, phosphonic acid, sulfuric acid, sulphonic acid, carboxylic acid, organic sulfonic acid, sultone, boron trifluoride, boron trifluoride complexes, or phosphazene.