US 2022/0064350 A1 · LIMONENE-BASED (METH)ACRYLATES FOR USE IN 3D PRINTING

Abstract

The present invention relates to photocurable compositions, comprising a limonene-based (meth)acrylate (A) obtainable by reacting a) 1 equivalent of a compound of formula, especially (I) with 1 to 3 equivalents of a compound of formula (II) in the presence of a catalyst and an inhibitor at elevated temperature and its use in a photopolymerization 3D printing process. The limonene-based (meth)acrylate (A) significantly increases stiffness and glass transition temperatures of photo-cured acrylate compositions. While such effects are usually achieved with the use of aromatic or bisphenol A based compounds, the limonene-based (meth)acrylate (A) offers a sustainable alternative at much lower viscosity.

Claims19

Dependent claims

A photocurable composition, comprising

(A) a limonene-based (meth)acrylate obtainable by reacting
a) 1 equivalent of a compound of formula
especially
with 1 to 3 equivalents of a compound of formula
in the presence of a catalyst and a polymerization inhibitor at elevated temperature, wherein
R and R′ are independently of each other H, or a methyl group,
R1, R2 and R3 are independently of each other H, or a C1-C4 alkyl group,
b) optionally reacting the product obtained in step a) with an acid anhydride, or acyl halide;
(B) optionally an oligomer (B),
(C) a diluent (C), and
(D) a photoinitiator (D).

8 more elements

Dependencies are inferred from the claim text.

Limonene-based (meth)acrylates for use in 3d printing

Life of this patent

Limonene-based (meth)acrylates for use in 3d printing

Life of this patent

Abstract

Claims19