Radiation curable amino(meth)acrylates
The invention relates to amino(meth)acrylates obtained from the reaction of amines with a mixture of urethane(meth)acrylates and (meth)acrylated diluent sand their use for making coatings, adhesives, varnishes and inks. The amino(meth)acrylates of the invention are particularly suited for use in sealer compositions for parquet and laminate floors.
1. A radiation curable coating composition comprising from 5% to 99% by weight of at least one amino(meth)acrylate obtained from the reaction of at least one amine (A) with a mixture comprising from 15 to 99% by weight of at least one urethane(meth)acrylate (B) and from 1 to 85% by weight of at least one (meth)acrylated diluent (C), wherein the amine (A) is selected from primary amines (A1) comprising at least one primary amino group —NH 2 and/or from secondary amines (A2) comprising at least two secondary amino groups —NH, and further comprising at least one (meth)acrylated diluent (D).
2. The composition according to claim 1 wherein the (meth)acrylated diluent (D) is selected from di(meth)acrylates and/or from mono(meth)acrylates.
3. The composition according to claim 1 wherein the (meth)acrylated diluent (D) is a mono(meth)acrylate.
4. A process for coating a floor which process comprises applying to a floor substrate one or more layers of a radiation curable composition according to claim 1 , and curing the applied composition by exposure to radiation.
5. The process according to claim 4 wherein the step of applying one or more layers of the composition is preceded by a step of applying a primer coat and is followed by a step of applying a top coat.
6. The process according to claim 4 wherein the floor is a wood floor.
7. The radiation curable coating composition according to claim 1 wherein the amine (A1) responds to formula R 1 —NH 2 wherein R 1 is an alkyl, optionally substituted by hydroxyl, alkoxy, tertiary amine and/or aryl.
8. The radiation curable coating composition according to claim 1 wherein the urethane(meth)acrylate (B) comprises from 2 to 4 (meth)acrylate functions.
9. The radiation curable coating composition according to claim 1 wherein the urethane(meth)acrylate (B) is a urethane di(meth)acrylate.
10. The radiation curable coating composition according to claim 1 wherein the (meth)acrylated diluent (C) is selected from tri(meth)acrylates, from di(meth)acrylates and/or from mono(meth)acrylates.
11. The radiation curable coating composition according to claim 1 wherein the (meth)acrylated diluent (C) is a di(meth)acrylate.
12. The radiation curable coating composition according to claim 1 wherein the amount of amine (A) is such that the equivalent ratio of amino groups —N—H provided by the amine (A) to the (meth)acrylic double bounds provided by the urethane(meth)acrylate (B) and (meth)acrylated diluent (C) is from 0.1 to 0.9.
13. A coating, adhesive, ink or varnish prepared from the radiation curable coating composition according to claim 1 .