Low-odour (meth)acrylic reaction resins
View Patent ↗The present invention relates to an innovative (meth)acrylic reactive resin which cures with low odor or odorlessly. The present invention relates more particularly to reactive resins comprising high-boiling, reactive (meth)acrylic monomers from the group of the polar, cyclically substituted esters of (meth)acrylic acid, more particularly glycerol acetal, ketal or carbonate methacrylates. These new components are used as substitutes for MMA, which represents the major part of the odor nuisance in the existing, prior-art reactive resin systems. Using these new components it is possible to obtain resin formulations which have glass transition temperatures similar to, and properties comparable with, MMA-based resins. The innovative reactive resins are able in addition to exhibit more rapid curing than prior-art MMA-based systems. Reactive resins for the purposes of the invention are reactive monomer mixtures or mixtures of monomers and polymers that when used as a 2-component system can be readily cured.
1. A composition, comprising:
a) 0.5% to 30% by weight of a dimethacrylate;
b) 5% to 96% by weight of at least one of glycerol formal(meth)acrylate and trimethylolpropane formal(meth)acrylate;
c) 3.5% to 90% by weight of a (meth)acrylate, a monomer miscible with a (meth)acrylate, or both;
d) a peroxide thermal initiator; and
e) 1% to 60% by weight of a poly(meth)acrylate or a polyester, wherein the composition does not contain a urethane (meth)acrylate.
2. The composition according to claim 1 , comprising glycerol formal(meth)acrylate as the component b).
3. The composition according to claim 1 , further comprising an accelerator f) in an amount of no greater than 5% by weight.
4. The composition according to claim 1 , wherein component b) is a combination of glycerol formal(meth)acrylate and trimethylolpropane formal(meth)acrylate.
5. The composition according to claim 1 , wherein component b) is glycerol formal(meth)acrylate.
6. The composition according to claim 1 , comprising trimethylolpropane formal(meth)acrylate as the component b).
7. The composition according to claim 1 , comprising glycerol formal methacrylate and glycerol formal acrylate as the component b).
8. The composition according to claim 1 , comprising at least one of itaconic acid, a methacrylamide and a 1-alkene, as the component c).
9. The composition according to claim 1 , comprising a styrene as the component c).
10. The composition according to claim 1 , comprising 1% to 60% by weight of the poly(meth)acrylate.
11. A composition, comprising:
a) 0.5% to 30% by weight of dimethacrylate;
b) 5% to 96% by weight of at least one of glycerol formal(meth)acrylate and trimethylolpropane formal(meth)acrylate;
c) 3.5% to 90% by weight of a (meth)acrylate, a monomer miscible with a (meth)acrylate, or both;
d) a peroxide thermal initiator; and
e) 1% to 60% by weight of a poly(meth)acrylate or a polyester, wherein the composition does not contain methyl methacrylate.
12. The composition according to claim 11 , comprising 1% to 60% by weight of the poly(meth)acrylate.
13. A cold plastic, comprising:
5% to 99% by weight of the composition according to claim 1 , the composition comprising at least 0.1% by weight of the peroxide thermal initiator d) relative to a total weight of the composition; and
0.1% to 5% by weight of an accelerator f), wherein:
the peroxide thermal initiator d) and the accelerators f) are present separately from one another before the cold plastic is produced.
14. The cold plastic according to claim 13 , comprising:
9% to 45% by weight of the composition, the composition comprising at least 0.1% by weight of the peroxide thermal initiator d) relative to the total weight of the composition;
0.1% to 5% by weight of the accelerator f);
0% to 15% by weight of a inorganic pigment; and
10% to 90% by weight of glass beads, at least one organic filler or at least one mineral filler.
15. The cold plastic according to claim 13 , comprising an amine as the accelerator f).
16. The cold plastic according to claim 15 , wherein:
the peroxide thermal initiator d) is dilauroyl peroxide, dibenzoyl peroxide, or both; and
the amine is a tertiary, aromatically substituted amine.
17. The cold plastic according to claim 13 , wherein the composition and the accelerator f) are mixed before or during application of the cold plastic.
18. The cold plastic according to claim 13 , wherein the cold plastic is adapted to function as a cold plastic for producing a trafficway marking, a trafficway repair composition, an intumescent coating, or a floor coating.
19. The cold plastic according to claim 13 , wherein the cold plastic is adapted to function as a casting resin, an architectural preservative, a coating material or a laminating material.