Deoxybenzoin containing flame retardant polymer compositions

Patent metadata

Field	Value
Publication number	US-10407539-B2
Application number	US-201515518018-A
Country	US
Kind code	B2
Filing date	Oct 9, 2015
Priority date	Oct 10, 2014
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

The present invention relates to specific deoxybenzoin containing flame retardant polyesters and flame retardant thermoplastic polymer molding compositions comprising deoxybenzoin containing flame retardant polyesters as well as their preparation and use for producing moldings, fibers or foils.

First claim

The invention claimed is:

1. A flame retardant thermoplastic polymer molding composition, comprising
a) 0.1 to 80 wt.-% of at least one thermoplastic polyamide or polyester, different from component B, as component A,
b) 5 to 50 wt.-% of at least one thermoplastic polyester based on at least one aromatic dicarboxylic acid, 1,2-bis[4-(2-hydroxyethoxy)phenyl]ethanone and at least one C 2-12 -diol, as monomers, wherein the molar ratio of 1,2-bis[4-(2-hydroxyethoxy)phenyl]ethanone to C 2-12 -diol is in the range of from 0.1:0.9 to 0.95:0.05 as component B,
c) 1 to 35 wt.-% of at least one flame retardant additive, selected from phosphorus containing flame retardant additives and halogen containing flame retardant additives, as component C,
d) 0.1 to 25 wt.-% of at least one flame retardant synergist, different from component C, selected from nitrogen compounds, metal borates, metal stannates and metal oxides, as component D,
e) 0 to 60 wt.-% of glass fibers as component E,
f) 0 to 30 wt.-% of at least one further additive, as component F,
wherein the total amount of components A to F is 100 wt.-%.

2. The molding composition of claim 1 , wherein component C is an aluminum salt of phosphinic acid or di-C 1-6 -alkyl phosphinic acid, or wherein C is a brominated polystyrene, brominated polybenzyl acrylate or brominated Bisphenol-A-containing polymer.

3. The molding composition of claim 1 , wherein component D is melamine polyphosphate or melamine cyanurate.

4. A process for the preparation of the molding composition of claim 1 , comprising mixing the components of the molding composition.

5. A method for the production of moldings, fibers or foils, comprising processing a molding composition of claim 1 into the desired form.

6. A molding, a fiber, or a foil comprising the thermoplastic molding composition of claim 1 .

7. A thermoplastic polyester based on at least one aromatic dicarboxylic acid, 1,2-bis[4-(2-hydroxyethoxy)phenyl]ethanone and at least one C 2-12 -diol, as monomers, wherein the molar ratio of 1,2-bis[4-(2-hydroxyethoxy)phenyl]ethanone to further C 2-12 -diol is in the range of from 0.1:0.9 to 0.95:0.05.

8. The thermoplastic polyester of claim 7 , wherein the dicarboxylic acid is terephthalic acid.

9. A process for producing the thermoplastic polyester of claim 7 by polycondensation of at least one aromatic dicarboxylic acid, 1,2-bis[4-(2-hydroxyethoxy)phenyl]ethanone and at least one C 2-12 -diol, as monomers, or by transesterification of an ester containing one of the monomers with the other monomers.

Assignees

• Basf Se
• Univ Massachusetts

Inventors

• Krämer Roland Helmut
• Wagner Sebastian
• Deglmann Peter
• Yamamoto Motonori
• Emrick Todd
• Mir Aabid

Classifications

• C09K21/14

  Macromolecular materials · CPC title

• C08L67/02 Primary

  Polyesters derived from dicarboxylic acids and dihydroxy compounds (C08L67/06 takes precedence) · CPC title

• C08K5/0066 Primary

  Flame-proofing or flame-retarding additives · CPC title

• C08J5/18

  Manufacture of films or sheets · CPC title

• C08J3/20

  Compounding polymers with additives, e.g. colouring · CPC title