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US 11,993,691 B2Granted
Use of geopolymeric additive in combination with non-brominated flame retardant in polymer foams
AssigneeSynthos S.A.
InventorsFilip Lukasz Kondratowicz, Kamil Utrata
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Abstract
The invention relates to the use of i) geopolymer and ii) non-brominated, phosphorus- and/or nitrogen-based flame retardants for improving the self-extinguishing properties of a composition comprising polymer. The polymer may be a vinyl aromatic polymer, and may be in a granulate or foam.
Claims22
A process for the production of expandable polymer granulate by an extrusion or a suspension process, the process comprising the addition of
- i) one or more geopolymer additives, wherein the geopolymer additive is
- a) a geopolymer;
- b) a combination of a geopolymer with an athermanous additive;
- or
- c) a geopolymer composite derived from geopolymer and comprising athermanous additive,
- and
- ii) one or more non-brominated flame retardants selected from
- a) phosphorus-based flame retardants,
- b) nitrogen-based flame retardants, and
- c) phosphorus/nitrogen-based flame retardants;
- wherein the polymer is a vinyl aromatic polymer, and
- wherein the geopolymer or geopolymer composite has a particle size in the range of 0.1 μm to 200 μm.
9 more elements
Composition comprising one or more vinyl aromatic polymers, the composition further comprising
- i) one or more geopolymer additives, wherein the geopolymer additive is
- a) a geopolymer;
- b) a combination of a geopolymer with an athermanous additive;
- or
- c) a geopolymer composite derived from geopolymer and comprising athermanous additive,
- and
- ii) one or more non-brominated flame retardants selected from
- a) phosphorus-based flame retardants,
- b) nitrogen-based flame retardants, and
- c) phosphorus/nitrogen-based flame retardants,
- wherein the composition is in the form of an expandable granulate,
- wherein the polymer is a vinyl aromatic polymer, the granulate further comprising one or more propellants, and
- wherein the geopolymer or geopolymer composite has a particle size in the range of 0.1 μm to 200 μm.
10 more elements
Composition comprising one or more polymers, the composition further comprising
- i) one or more geopolymer additives, wherein the geopolymer additive is
- d) a geopolymer;
- e) a combination of a geopolymer with an athermanous additive;
- or
- f) a geopolymer composite derived from geopolymer and comprising athermanous additive,
- and
- ii) one or more non-brominated flame retardants selected from
- d) phosphorus-based flame retardants,
- e) nitrogen-based flame retardants, and
- f) phosphorus/nitrogen-based flame retardants,
- wherein the composition is in the form of expanded vinyl polymer foam, and the vinyl polymer is vinyl aromatic polymer,
- the foam having
- a density of from 8 to 30 kg/m3, and
- a thermal conductivity (as measured according to ISO 8301) of from 25 to 35 mW/K·m,
- wherein the geopolymer or geopolymer composite has a particle size in the range of 0.1 μm to 200 μm.
12 more elements
Dependencies are inferred from the claim text.