Radiation curable and printable composition

Patent metadata

Field	Value
Publication number	US-12448479-B2
Application number	US-202117453944-A
Country	US
Kind code	B2
Filing date	Nov 8, 2021
Priority date	May 13, 2019
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

The present invention relates to radiation of dual radiation/moisture curable compositions based on (meth)acrylate- and silane-terminated polymers that can be used as 3D printing materials and provide isotropic and elastomeric properties. The invention further relates to the use thereof as 3D printing materials and printing methods using said compositions.

First claim

What is claimed is:

1. A reactive curable printable composition, comprising:
(i) at least one polymer A comprising at least one terminal group of formula (I):
-A 1 -C(═O)—CR 1 ═CH 2   (I),

wherein:
A 1 comprises a substituted or unsubstituted amide, carbamate, urethane, urea, imino, siloxane, carboxylate, carbamoyl, amidino, carbonate, sulfonate or sulfinate group;
R 1 is selected from H and C 1 -C 4 alkyl;
wherein the polymer backbone of the at least one polymer A is a polyoxyalkylene; and
(ii) at least one filler that is configured to modify one or more rheological properties of the composition,
wherein the composition is in a form of a paste and has a yield stress of greater than 25, wherein the yield stress is calculated using the formula:

τ

1
2

=

k
oc

1
2

+

k
c

1
2

⁢

γ

1
2

,

wherein τ (tau) is shear stress, k oc is Casson yield stress, k c is Casson plastic viscosity and γ (gamma) is shear rate, wherein the shear rate and the shear stress are measured using BS EN ISO 3219:1995, wherein the measuring conditions are as follows: Geometry: 25 mm plate/plate geometry, Gap: 0.25 mm, F=0N, under nitrogen, 25° C., Shear rate 0.3-40 s −1 , wherein Casson's model is used for extrapolation.

2. The reactive curable printable composition of claim 1 , wherein A 1 is a group of formula (III):
—R 11 -A 11 -(R 12 -A 12 ) n -R 13 -  (III)

wherein:
R 11 , R 12 , and R 13 are independently a bond or a divalent substituted or unsubstituted hydrocarbon residue with 1 to 20 carbon atoms;
A 11 and A 12 are each independently a divalent group selected from —O—C(═O)—NH—, —NH—C(═O)O—, —NH—C(═O)—NH—, —NR″—C(═O)—NH—, —NH—C(═O)—NR″—, —NH—C(═O)—, —C(═O)—NH—, —C(═O)—O—, —O—C(═O)—, —O—C(═O)—O—, —S—C(═O)—NH—, —NH—C(═O)—S—, -A C(═O)—S—, —S—C(═O)—, —S—C(═O)—S—, —C(═O)—, —S—, and —NR″—, wherein R″ can be hydrogen or a hydrocarbon moiety with 1 to 12 carbon atoms; and
n is 0 or 1.

3. The reactive curable printable composition of claim 2 , wherein:
R 11 is a bond or a divalent substituted or unsubstituted hydrocarbon residue with 1 to 20 carbon atoms;
A 11 is a divalent group selected from —O—C(═O)—NH—, —NH—C(═O)—NH—, and —NR″—C(═O)—NH—;
R 13 is a bond or a divalent substituted or unsubstituted hydrocarbon residue with 1 to 20 carbon atoms;
n is 0 or 1, provided that if n is 1,
R 12 is a divalent substituted or unsubstituted hydrocarbon residue with 1 to 20 carbon atoms; and
A 12 is a divalent group selected from —NH—C(═O)O—, —NH—C(═O)—NH—, and —NH—C(═O)—NR″—.

4. The reactive curable printable composition of claim 2 , wherein R 11 and R 13 are selected from a bond, methylene, ethylene, or n-propylene group.

5. The reactive curable printable composition of claim 1 ,
wherein the composition further comprises:
(i) at least one photoinitiator;
(ii) at least one catalyst; or
(iii) a combination thereof.

6. The reactive curable printable composition of claim 5 , wherein the composition comprises, relative to the total weight of the composition:
(i) 0.01 to 90 wt.-% of the at least one polymer A;
(ii) 0.01 to 5 wt.-% of the at least one photoinitiator;
(iii) 0.01 to 60 wt.-% of the at least one filler;
(iv) 0.01 to 5.0 wt.-% of the at least one catalyst; or
(v) a combination thereof.

7. The reactive curable printable composition of claim 1 , further comprising at least one reactive diluent and/or at least one liquid filler.

8. The reactive curable printable composition of claim 1 , wherein the at least one polymer A further comprises at least one terminal group of formula (II):
-A 2 -SiXYZ  (II),

wherein X, Y, Z are, independently of one another, selected from the group consisting of a hydroxyl group and C 1 to C 8 alkyl, C 1 to C 8 alkoxy, and C 1 to C 8 acyloxy groups, wherein X, Y, Z are substituents directly bound with the Si atom or the two of the substituents X, Y, Z form a ring together with the Si atom to which they are bound, and at least one of the substituents X, Y, Z is selected from the group consisting of a hydroxyl group, C 1 to C 8 alkoxy and C 1 to C 8 acyloxy groups, and
A 2 comprises a substituted or unsubstituted ether, amide, carbamate, urethane, urea, imino, siloxane, carboxylate, carbamoyl, amidino, carbonate, sulfonate or sulfinate group.

9. The reactive curable printable composition of claim 8 , wherein the at least one polymer A:
(i) comprises at least two terminal groups of the formula (I) or comprises at least one terminal group of the formula (I) and at least one terminal group of the formula (II);
(ii) comprises 1 to 100 mol-% of terminal groups of the formula (I) and 99 to 0 mol-% of terminal groups of the formula (II);
(iii) comprises: (i) two or three terminal groups of the formula (I); or (ii) one terminal group of the formula (I) and one or two terminal groups of the formula (II); or (iii) two terminal groups of the formula (I) and one terminal group of the formula (II);
(iv) is a linear polymer; or
(v) any combination thereof.

10. The reactive curable printable composition of claim 1 , further comprising:
at least one polymer B comprising at least one terminal group of formula (II):
-A 2 -SiXYZ  (II),

wherein X, Y, Z are, independently of one another, selected from the group consisting of a hydroxyl group and C 1 to C 8 alkyl, C 1 to C 8 alkoxy, and C 1 to C 8 acyloxy groups, wherein X, Y, Z are substituents directly bound with the Si atom or the two of the substituents X, Y, Z form a ring together with the Si atom to which they are bound, and at least one of the substituents X, Y, Z is selected from the group consisting of a hydroxyl group, C 1 to C 8 alkoxy and C 1 to C 8 acyloxy groups;
A 2 comprises a substituted or unsubstituted ether, amide, carbamate, urethane, urea, imino, siloxane, carboxylate, carbamoyl, amidino, carbonate, sulfonate or sulfinate group; and
wherein the polymer backbone of the at least one polymer B is selected from the group consisting of polyoxyalkylenes, poly(meth)acrylates, polyesters, and combinations thereof.

11. The reactive curable printable composition of claim 1 , wherein the at least one polymer A further comprises at least one terminal group of formula (II), and/or said composition further comprises at least one polymer B;
wherein the at least one polymer B comprises the at least one terminal group of the formula (II),
wherein the least one terminal group of the formula (II) is:
-A 2 -SiXYZ  (II),

wherein X, Y, Z are, independently of one another, selected from the group consisting of a hydroxyl group and C 1 to C 8 alkyl, C 1 to C 8 alkoxy, and C 1 to C 8 acyloxy groups, wherein X, Y, Z are substituents directly bound with the Si atom or the two of the substituents X, Y, Z form a ring together with t

Assignees

• Henkel Ag & Co Kgaa

Inventors

• Lanau Sebastien
• Gutacker Andrea
• Klein Johann
• Meckel-Jonas Claudia
• Dunekake Ralf
• Bonigut Markus

Classifications

• C09D175/14 Primary

  Polyurethanes having carbon-to-carbon unsaturated bonds · CPC title

• C08G18/671

  Unsaturated compounds having only one group containing active hydrogen (takes precedence on groups C08G18/675 - C08G18/69) · CPC title

• C09D175/16

  having terminal carbon-to-carbon unsaturated bonds · CPC title

• C09D11/101

  Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing · CPC title

• C08G18/755

  and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate · CPC title