Transparent composition

Patent metadata

Field	Value
Publication number	US-12152138-B2
Application number	US-202017632849-A
Country	US
Kind code	B2
Filing date	Aug 3, 2020
Priority date	Aug 8, 2019
Publication date	Nov 26, 2024
Grant date	Nov 26, 2024

Abstract

Compositions contain a poly(alkyl)(meth)acrylate matrix material and at least one additive, where the transparency is influenced to a minimal degree by the addition of the additive.

First claim

The invention claimed is:

1. A composition, consisting of:
a poly(alkyl)(meth)acrylate matrix material, and
at least one additive of the formula (I)
M 1 m1 M 2 m2 D 1 d1 D 2 d2   (I)

with
M 1 =[R 3 SiO 1/2 ]
M 2 =[R 2 R 1 SiO 1/2 ]
D 1 =[R 2 SiO 2/2 ]
D 2 =[RR 1 SiO 2/2 ]
wherein
R is independently an alkyl radical or an aromatic or alkylaromatic radical,
R 1 is independently —R 3 —(O—R 4 ) p
wherein
R 4 is a polyester radical,
R 3 is a p+1-valent hydrocarbon interrupted by oxygen atoms, having 3 to 10 carbon atoms, and
p is 1 to 4,

with
d1=5 to 70,
d2=0 to 20,
m1=0 to 2,
m2=0 to 2,
with the proviso that:
m 1+ m 2=2,
N=d 1+ d 2+2=10 to 80, and
d 2+ m 2≥1.

2. The composition according to claim 1 , wherein in formula (I), (d2+m2)*100/N is from 4% to 40%.

3. The composition according to claim 1 , wherein the R 3 in formula (I) are independently saturated or unsaturated oxygen-interrupted hydrocarbons having p+1 binding sites, where R 3 consists of fragments (a) and (b), where the fragments (a) and (b) are bonded to one another via oxygen atoms.

4. The composition according to claim 3 , wherein fragment (a) has saturated or unsaturated hydrocarbons having 2 to 4 carbon atoms, and fragment (b) has saturated hydrocarbons having 1 to 6 carbon atoms, and both fragments (a) and (b) are free of heteroatoms.

5. The composition according to claim 1 , wherein the polyester radicals R 4 are formed from 3 to 30 ester units.

6. The composition according to claim 1 , wherein the polyester radicals R 4 are formed from an acyl radical of one or more of acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, 3-methylbutyric acid, caproic acid, oenanthic acid, caprylic acid, 3,5,5-trimethylcaproic acid, or a corresponding hydroxy acid or lactone.

7. The composition according to claim 1 , wherein the composition consists to an extent of 0.05% by weight to 10% by weight, of the at least one additive of the formula (I), based on the overall composition.

8. A moulding compound or shaped body, comprising the composition according to claim 1 .

9. The moulding compound or shaped body according to claim 8 , further comprising an impact modifier.

10. The moulding compound or shaped body according to claim 8 , wherein the poly(alkyl)(meth)acrylate matrix material is a homopolymer, a copolymer, or a mixture thereof, where at least one component of the poly(alkyl)(meth)acrylate matrix material is a polymer of methyl methacrylate to an extent of 50% to 100% by weight.

11. The moulding compound or shaped body according to claim 8 , wherein the moulding compound or shaped body contains an auxiliary, a filler, or a further addition.

12. The moulding compound or shaped body according to claim 8 , wherein the moulding compound or shaped body is in a form of a decorative covering panel or functional installable component in a motor vehicle, consumer electronic, or domestic appliance.

13. The composition according to claim 1 , wherein in the formula (I), R is independently an alkyl radical having 1 to 4 carbon atoms, or an aromatic or alkylaromatic radical having 6 to 8 carbon atoms.

14. The composition according to claim 4 , wherein fragment (a) has saturated or unsaturated hydrocarbons having 2 to 3 carbon atoms, and fragment (b) has saturated hydrocarbons having 2 to 6 carbon atoms.

15. The composition according to claim 5 , wherein the polyester radical R 4 is formed from 5 to 15 ester units.

16. The composition according to claim 6 , wherein the polyester radical R 4 is formed from an acyl radical of an acid selected from the group consisting of valeric acid, caproic acid, and a corresponding hydroxy acid or lactone.

17. The composition according to claim 7 , wherein the composition consists to an extent of 0.5% by weight to 3% by weight, of the at least one additive of the formula (I), based on the overall composition.

18. The moulding compound or shaped body according to claim 9 , comprising the impact modifier in a proportion of 0.1% to 15% by weight, based on a total mass of the moulding compound or shaped body.

19. The moulding compound or shaped body according to claim 10 , wherein the poly(alkyl)(meth)acrylate matrix material comprises the polymer of methyl methacrylate to an extent of 99% to 100% by weight.

20. The moulding compound or shaped body according to claim 11 , wherein the further addition is a colorant.

Assignees

• Evonik Operations Gmbh

Inventors

• Lehmann Kathrin
• Hessner Sebastian
• Nawracala Angela
• Amajjahe Sadik
• Busch Stefan

Classifications

• C08L2201/10

  Transparent films; Clear coatings; Transparent materials · CPC title

• C08G77/20

  containing silicon bound to unsaturated aliphatic groups · CPC title

• C08G77/445

  containing polyester sequences · CPC title

• C08L83/10

  Block- or graft-copolymers containing polysiloxane sequences (obtained by polymerising a compound having a carbon-to-carbon double bond on to a polysiloxane C08L51/08, C08L53/00) · CPC title

• C08L33/12 Primary

  Homopolymers or copolymers of methyl methacrylate · CPC title