Composition comprising colorants

Patent metadata

Field	Value
Publication number	US-11015058-B2
Application number	US-201616462031-A
Country	US
Kind code	B2
Filing date	Nov 18, 2016
Priority date	Nov 18, 2016
Publication date	May 25, 2021
Grant date	May 25, 2021

Abstract

The invention relates to compositions containing dye, containing (A) at least one dye, (B) at least one organopolysiloxane containing units of the general formula Ra(R1O)bSiO[4−(a+b)]/2 (I), wherein the radicals and indexes have the meaning indicated in claim 1, provided that the total is a+b≤3 and in more than 80% of all units, the formula (I) is equal to 2, and (C) at least one siloxane-organo-copolymer. The invention further relates to a method for the production thereof and to the use thereof in the dyeing of polymer materials.

First claim

The invention claimed is:

1. A colorant masterbatch composition comprising:
(A) at least one colorant,
(B) at least one organopolysiloxane containing units of the formula
R a (R 1 O) b SiO [4−(a+b)]/2   (I),

where
R are identical or different and are monovalent, SiC-bonded, optionally substituted hydrocarbon radicals optionally interrupted by heteroatoms,
R 1 are identical or different and are hydrogen or monovalent, optionally substituted hydrocarbon radicals optionally interrupted by heteroatoms,
a is 0, 1, 2 or 3, and
b is 0, 1, 2 or 3,
with the proviso that the sum a+b≤3 and in more than 80% of all units of the formula (I) a is 2, and also
(C) at least one siloxane-organo copolymer, the organic segments in the copolymers (C) comprising polyester segments,
wherein the siloxane-organo copolymer is liquid over the range of 20° C. to 100° C.

2. The composition of claim 1 , wherein the component (B) comprises organopolysiloxanes which are liquid at 20° C. and 1000 hPa.

3. The composition of claim 1 , wherein the colorants (A) comprise inorganic or organic pigments.

4. The composition of claim 1 , wherein the colorants (A) comprise carbon black or titanium dioxide.

5. The composition of claim 1 , wherein the colorant (A) is used in amounts of 0.5 to 85 wt %, based on the total weight of the components (A), (B) and (C).

6. The composition of claim 1 , wherein the siloxane segment has a fraction of the siloxane-organo copolymer (C) of at least 25 wt % and a fraction of the organic segment in component (C) is not more than 75 wt %.

7. The composition of claim 1 , wherein the component (C) comprises a polysiloxane-polycaprolactone block copolymer containing siloxane segments having in each case a molecular weight Mn of 1000 to 10,000 g/mol.

8. A method for producing the organopolysiloxane composition as claimed in claim 1 :
mixing the individual constituents (A), (B), and (C).

9. The method as claimed in claim 8 , wherein the colorant (A) is mixed into the components (B) or (C) or into the mixture of (B) and (C).

10. The composition of claim 1 , wherein the colorant is present in an amount of from 10 to 50 wt. % based on the total weight of the composition.

11. A colorant masterbatch composition comprising:
(A) at least one colorant,
(B) at least one organopolysiloxane containing units of the formula
R a (R 1 O) b SiO [4−(a+b)]/2   (I),

where
R are identical or different and are monovalent, SiC-bonded, optionally substituted hydrocarbon radicals optionally interrupted by heteroatoms,
R 1 are identical or different and are hydrogen or monovalent, optionally substituted hydrocarbon radicals optionally interrupted by heteroatoms,
a is 0, 1, 2 or 3, and
b is 0, 1, 2 or 3,
with the proviso that the sum a+b≤3 and in more than 80% of all units of the formula (I) a is 2, and also
(C) at least one siloxane-organo copolymer, the organic segments in the copolymers (C) comprising polyester segments,
wherein the composition contains up to 20 weight percent total, based on the total weight of the composition, of one or more of nanofillers, stabilizers, antistats, flame retardants, adhesion promoters, nucleating agents, propellants, and antibacterial agents, and no more than 20 wt. %, based on the total weight of the composition, of further substances.

12. The masterbatch composition of claim 1 , which is liquid over the range of 20° C. to 100° C.

13. The masterbatch composition of claim 11 , which is liquid over the range of 20° C. to 100° C.

14. The composition of claim 1 , wherein the amount of component (C) is from 0.1 to 40 wt. % based on the total weight of components (A), (B), and (C).

Assignees

• Wacker Chemie Ag

Inventors

• Schäfer Oliver
• Randel Peter

Classifications

• C08G77/445

  containing polyester sequences · CPC title

• C08K3/013

  Fillers, pigments or reinforcing additives · CPC title

• C08K2003/2241

  Titanium dioxide · CPC title

• C08K3/04

  Carbon · CPC title

• C08K3/22

  of metals · CPC title