Catalyst composition for a polyester manufacturing process

Patent metadata

Field	Value
Publication number	US-10982045-B2
Application number	US-201515513925-A
Country	US
Kind code	B2
Filing date	Sep 2, 2015
Priority date	Sep 24, 2014
Publication date	Apr 20, 2021
Grant date	Apr 20, 2021

Abstract

A catalyst composition for a polyester manufacturing process, comprising a titanium catalyst and/or an antimony catalyst as main catalyst, and either
(i) at least one co-catalyst A, or
(ii) at least one co-catalyst B and at least one co-catalyst C, or
(iii) a combination thereof, and
wherein co-catalyst A is selected from the group consisting of a metal salt of an alkyl or an aryl phosphinic acid, or a metal salt of an alkyl or aryl diphosphinic acid, or a combination thereof, and co-catalyst B is selected from the group consisting of an alkyl or aryl phosphinic acid, an alkyl or aryl diphosphinic acid a combination thereof, and co-catalyst C selected from the group of a metal salt, a metal hydroxide or a metal organyl compound.

First claim

The invention claimed is:

1. Catalyst composition for a polyester manufacturing process, consistiing essentially of:
a titanium catalyst and/or an antimony catalyst, the titanium catalyst being selected from the group consisting of titanium tetraethoxide, titanium tetrapropoxide, titanium tetraisopropoxide, titanium tetra-n-butoxide, titanium tetrahexoxide, titanium tetra 2-ethylhexoxide, titanium tetraoctoxide, and combinations thereof, and the antimony catalyst being selected from the group consisting of antimony trioxide and antimony triacetate; and
(i) at least one co-catalyst A, or
(ii) at least one co-catalyst B and at least one co-catalyst C, or
(iii) a combination of at least one co-catalyst A, at least one co-catalyst B and at least one co-catalyst C, and wherein

the co-catalyst A is selected from the group consisting of compounds of formula (I) and formula (II)

wherein
R 1 , R 2 , R 3 and R 4 are each independently a linear or branched, saturated or unsaturated C 1 to C 6 alkyl or an aryl residue,
R 5 is a C 1 to C 12 a linear or branched, saturated or unsaturated alkylene, a C 6 to C 18 arylene, a C 6 to C 18 alkyl arylene or a C 6 to C 18 arylalkylene,
M is selected from the group consisting of aluminum, cobalt and zinc ions,
m is 2, 3 or 4, and
n is 1 or 2,
and
the co-catalyst B is selected from the group consisting of compounds of formula (III) and formula (IV)

wherein
R 1 , R 2 , R 3 and R 4 are each independently a linear or branched, saturated or unsaturated C 1 to C 6 alkyl or an aryl residue, and
R 5 is a linear or branched, saturated or unsaturated C 1 to C 12 alkylene, a C 6 to C 18 arylene, a C 6 to C 18 alkyl arylene or a C 6 to C 18 arylalkylene,
and
the co-catalyst C is selected from the group consisting of a zinc acetate, zinc chloride, zinc nitrate, zinc sulfate, aluminum chloride, aluminum hydroxide, aluminum acetate, aluminum hydroxychloride, cobalt acetate, cobalt nitrate, cobalt chloride, cobalt acetylacetonate, cobalt naphthenate, cobalt hydroxide, cobalt salicate and cornbinations thereof; and
(iv) optionally a solvent D,

wherein:
a molar ratio of the co-catalyst A: the titanium and/or the antimony catalyst is in a range of 1:1 to 4:1;
a molar ratio of the co-catalyst B : the titanium and/or the antimony catalyst is in a range of 1:1 to 4:1;
a molar ratio of the co-catalyst C: the titanium and/or the antimony catalyst is in a range of 1:1 to 8:1.

2. Catalyst composition according to claim 1 , wherein the catalyst system consists of
the titanium catalyst and/or the antimony catalyst and
the at least one co-catalyst B and
the at least one co-catalyst C.

3. Catalyst composition according to claim 1 , wherein
the co-catalyst B is diethylphosphinic acid and
the co-catalyst C is selected from the group consisting of zinc acetate, zinc chloride, zinc nitrate and zinc sulfate.

4. Catalyst composition according to claim 1 , wherein the solvent D is selected from the group consisting of monovalent, divalent and polyvalent alcohols.

5. Catalyst composition according to claim 4 , wherein the solvent D is selected from the group consisting of ethanol, propanol, isopropanol, butanol, ethylene glycol, propylene glycol, isopropylene glycol, butylene glycol, 1-methyl propylene glycol, pentylene glycol, diethylene glycol, triethylene glycol, 2-ethyl hexanol and combinations thereof.

Assignees

• Clariant Plastics & Coatings Ltd

Inventors

• Steffanut Pascal
• Sidqi Mohamed
• Dongiovanni Ernesto
• Abrahmi Jerome

Classifications

• C08G63/87

  Non-metals or inter-compounds thereof (boron C08G63/84) · CPC title

• C08G63/866

  Antimony or compounds thereof · CPC title

• C08G63/85 Primary

  Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof {(C08G63/823 takes precedence)} · CPC title

• C08G63/183

  Terephthalic acids · CPC title