Additive mixtures for plastics, laser-markable polymer compositions comprising them and the use thereof

Patent metadata

Field	Value
Publication number	US-2020165415-A1
Application number	US-201816630502-A
Country	US
Kind code	A1
Filing date	Jul 6, 2018
Priority date	Jul 14, 2017
Publication date	May 28, 2020
Grant date	—

Abstract

wherein R3 means ethyl, Met is Al, Fe, TiOq or Zn, n means 2 to 3, and q=(4−n)/2, and antimony, tin and/or indium as component D. Polymer compositions containing said additive mixtures are characterized by exceptional flame protection and by very good laser markability or laser weldability.

First claim

1 . An additive mixture for plastics, comprising phosphinic salt of the formula (I) as component A

in which R 1 and R 2 are ethyl,
M is Al, Fe, TiO p or Zn,
m is 2 to 3, preferably 2 or 3, and
p =(4− m )/2;

compound selected from the group of the Al, Fe, TiO p and Zn salts of ethylbutylphosphinic acid, of dibutylphosphinic acid, of ethylhexylphosphinic acid, of butylhexylphosphinic acid and/or of dihexylphosphinic acid as component B;
phosphonic salt of the formula II as component C

in which R 3 is ethyl,
Met is Al, Fe, TiO q or Zn,
n is 2 to 3, preferably 2 or 3, and
q =(4 −n )/2;

and
antimony, tin and/or indium as component D.

2 . The additive mixture as claimed in claim 1 , wherein M and Met are Al, m and n are 3, and component B is an aluminum salt.

3 . The additive mixture as claimed in claim 1 , wherein
the proportion of component A is 5% to 85% by weight, the proportion of component B is 0.01% to 10% by weight, the proportion of component C is 0.01% to 10% by weight, and the proportion of component D is 0.0001% to 3% by weight,
where the percentages are based on the total amount of the additive mixture.

4 . The additive mixture as claimed in claim 3 , wherein
the proportion of component A is 10% to 60% by weight, the proportion of component B is 0.1° A to 2.5% by weight, the proportion of component C is 0.1° A to 2.5% by weight, and the proportion of component D is 0.1% to 2% by weight,
where the percentages are based on the total amount of the additive mixture.

5 . The additive mixture as claimed in claim 1 , which comprises, as component D, 0.0001% to 2.6% by weight of antimony, preferably 0.17% to 1.7% by weight of antimony, and/or 0.0001% to 1.5% by weight of tin, preferably 0.1% to 1% by weight of tin and/or 0.0001% to 1.5% by weight of indium, preferably 0.1% to 1% by weight of indium.

6 . The additive mixture as claimed in claim 1 , wherein component D is antimony- or fluorine-doped tin oxide, indium tin oxide and/or antimony oxide.

7 . The additive mixture as claimed in claim 1 , wherein component D is selected from the group consisting of antimony-doped tin oxide, fluoride-doped tin oxide and indium tin oxide, the content of dopants in the tin oxide is 1-15 mol %, preferably 3-10 mol %, and the content of tin in the indium tin oxide is 5-15 mol %.

8 . The additive mixture as claimed in claim 1 , wherein component D is antimony-doped tin oxide containing 0.0001-2.6% by weight of antimony and/or 0.0001-1.5% by weight of tin, or component D is indium tin oxide containing 0.0001-1.5% by weight of indium and/or 0.0001-1.5% by weight of tin, or component D is tin dioxide/diantimony trioxide-coated mica containing 15-30% by weight of tin and 0.3-2% by weight of antimony, or component D is antimony oxide.

9 . The additive mixture as claimed in claim 1 , which comprises a colorant E.

10 . The additive mixture as claimed in claim 1 , which comprises an inorganic phosphonate as component F.

11 . The additive mixture as claimed in claim 10 , wherein the inorganic phosphonate is a compound of the formula III

in which Me is Fe, TiO r , Zn or especially Al,
o is 2 to 3, preferably 2 or 3, and
r =(4 −o )/2,

where the compound of the formula (III) is present in an amount of 0.01% to 50% by weight, especially in an amount of 0.02% to 25% by weight, based on the total amount of the additive mixture.

12 . The additive mixture as claimed in claim 1 , which comprises a melamine polyphosphate having an average degree of condensation of 2 to 200 as component I.

13 . The additive mixture as claimed in claim 1 , wherein components A, B and C and optionally F and I are in particulate form, where the median particle size (d 50 ) is 1 to 100 μm.

14 . A polymer composition comprising thermoplastic and/or thermoset polymers and an additive mixture as claimed in claim 1 .

15 . The polymer composition as claimed in claim 14 , which comprises thermoplastic polymers as component G, especially polyam ides or polyesters.

16 . The polymer composition as claimed in claim 14 , wherein the proportion of component G is 25% to 95% by weight, that of component A is 1% to 35% by weight, that of component B is 0.01% to 3% by weight, that of component C is 0.001% to 1% by weight, that of component D is 0.005% to 2% by weight, that of component E is 0% to 25% by weight and that of component F is 0% to 10% by weight, where the percentages are based on the total amount of the polymer composition.

17 . The polymer composition as claimed in claim 14 , which has a comparative tracking index measured by International Electrotechnical Commission Standard IEC-60112/3 of not less than 500 volts.

18 . The polymer composition as claimed in claim 14 , which attains a V-0 assessment according to UL94, especially measured on moldings of thickness 3.2 mm to 0.4 mm.

19 . The polymer composition as claimed in claim 14 , which has a glow wire flammability index according to IEC-60695-2-12 of not less than 960° C., especially measured on moldings of thickness 0.75-3 mm.

20 . The polymer composition as claimed in claim 14 , which has a glow wire ignition temperature (GWIT) according to IEC-60695-2-13 of at least 775° C.

21 . The polymer composition as claimed in claim 14 , which comprises further additives as component H, where the further additives are selected from the group consisting of antioxidants, UV stabilizers, gamma ray stabilizers, hydrolysis stabilizers, costabilizers for antioxidants, antistats, emulsifiers, nucleating agents, plasticizers, processing auxiliaries, impact modifiers, dyes or pigments other than components D and E, fillers, reinforcers and/or further flame retardants other than components A, B, C, F and I.

22 . The polymer composition as claimed in claim 14 , which comprises glass fibers.

23 . The use of the polymer compositions as claim 14 as molding compounds, semifinished products or finished products in the electrics, electronics and motor vehicle industry, in packaging in the foods sector or in the games and toys sector, as label motifs, in medical technology or as plastic marks for individual identification of animals.

24 . The use of the polymer compositions as claimed in claim 23 , which are used for production of parts of circuit boards, housings, films, conduits, switches, distributors, relays, resistors, capacitors, coils, lamps, diodes, LEDs, transistors, connectors, regulators, storage elements and sensors, in the form of components of large surface area, especially of housing parts for electrical enclosures and in the form of components of complicated configuration with demanding geometry.

Assignees

• Clariant Plastics & Coatings Ltd

Inventors

• Bauer Harald
• Hörold Sebastian
• Sicken Martin

Classifications

• C08K5/0008

  Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59 · CPC title

• C08K5/34928

  Salts · CPC title

• C08K3/08

  Metals · CPC title

• C08K5/5317

  Phosphonic compounds, e.g. R—P(:O)(OR')2 · CPC title

• C08K13/04

  Ingredients characterised by their shape and organic or inorganic ingredients · CPC title