Modified endcapped poly(alkylene terephthalate) prepared by employing an in situ titanium-containing catalyst and compositions derived therefrom

Patent metadata

Field	Value
Publication number	US-2016369088-A1
Application number	US-201515114226-A
Country	US
Kind code	A1
Filing date	Jan 26, 2015
Priority date	Jan 28, 2014
Publication date	Dec 22, 2016
Grant date	—

Abstract

Disclosed is a modified endcapped polyalkylene terephthalate such as modified endcapped polybutylene terephthalate, as well as processes for making the modified endcapped polybutylene terephthalate and compositions and articles derived therefrom.

First claim

1 . A thermoplastic composition with improved hydrostability and increased crystallization rate and increased crystallization rate, comprising:
50 to 99.99 percent by weight of a modified endcapped polyalkylene terephthalate containing 50 to 300 ppm of tetra(C 1 -C 8 alkyl) titanate and 100 to 600 ppm of a phosphorus-containing compound, both based on the total amount of titanium present, wherein the phosphorus-containing compound is selected from the group consisting of phosphoric acid, poly(phosphoric acid), phosphorus acid, monobutyl phosphate, dibutyl phosphate, monoalkyl phosphates, dialkyl phosphates, and combinations thereof; and 0 to 60 percent by weight of a reinforcing filler; and wherein the modified endcapped polyalkylene terephthalate contains 0.01 to 5 weight percent of an endcapping agent which is a primary monoalcohol having 10 carbon atoms or more and a boiling point of at least 232° C. at atmospheric pressure; wherein all weight percents are based on the total weight of the composition; and wherein no quencher for the catalyst complex is added to the compounded thermoplastic composition.

2 . The thermoplastic composition of claim 1 , wherein the modified endcapped polyalkylene terephthalate is a modified polybutylene terephthalate.

3 . The thermoplastic composition of claim 1 , wherein the modified endcapped polyalkylene terephthalate is prepared from recycled polyethylene terephthalate.

4 . The thermoplastic composition of claim 1 , wherein the tetra(C 1 -C 8 alkyl) titanate is tetraisopropyl titanate and the phosphorous containing compound is phosphoric acid.

5 . The thermoplastic composition of claim 1 , wherein the reinforcing filler selected from glass fibers, carbon fibers, metal fibers, ceramic fibers or whiskers, such as wollastonite, polymeric fibers, alumina, amorphous silica, aluminosilicates, mica, clay, talc, glass flake, glass microspheres, metal oxides and ground quartz, and combinations thereof.

6 . The thermoplastic composition of claim 5 , wherein the reinforcing filler is glass fiber.

7 . The thermoplastic composition of claim 6 , comprising 25 to 35 percent by weight of glass fiber.

8 . The thermoplastic composition of claim 1 , wherein the endcapping agent is selected from the group consisting of 1-decanol, 1-undecanol, 1-dodecanol, 1-tridecanol, 1-tetradecanol, 1-dentadecanol, 1 hexadecanol, 1-heptadecanol, 1-octadecanol, 1-nonadecanol, 1-eicosanol, 1-heneicosanol, 1-docosanol, 1-tetracosanol, 1-hexacosanol, 1-heptacosanol, 1-octacosanol, 1-nonacosanol. 1-triacontanol, 1-dotriacontanol, and 1-tetratriacontanol.

9 . The thermoplastic composition of claim 8 , wherein the endcapping agent is selected from the group consisting of 1-decanol, 1-undecanol, 1-dodecanol, and 1-tridecanol.

10 . The thermoplastic composition of claim 1 , further comprising 0.01 to 1 percent by weight of a stabilizer.

11 . The thermoplastic composition of claim 10 , comprising 0.03 to 0.07 percent by weight of a stabilizer which is pentaerythritol tetrakis(3,5-di-tert-butyl-4-hydroxyhydrocinnamate

12 . The thermoplastic composition of claim 1 , further comprising 1 to 20 percent by weight of an impact modifier.

13 . The thermoplastic composition of claim 12 , comprising 2 to 8 percent by weight of an impact modifier which is linear low density polyethylene.

14 . The thermoplastic composition of claim 1 , comprising:
from 50 to 99.99 percent by weight of a modified endcapped polyalkylene terephthalate, wherein the modified endcapped polyalkylene terephthalate containing 50 to 300 ppm of tetra(C 1 -C 8 alkyl) titanate and 100 to 600 ppm of a phosphorus-containing compound, both based on the total amount of titanium present, wherein the phosphorus-containing compound is selected from the group consisting of phosphoric acid, poly(phosphoric acid), phosphorus acid, monobutyl phosphate, dibutyl phosphate, monoalkyl phosphates, dialkyl phosphates, and combinations thereof; from 0 to 60 percent by weight of a reinforcing filler which is glass; wherein the modified endcapped polyalkylene terephthalate contains 0.01 to 3 weight percent of an endcapping agent which is a primary or secondary alcohol having 10 carbon atoms or more and a boiling point of at least 232° C. at atmospheric pressure; from 0 to 30 percent by weight of an impact modifier; and from 0 to 5 percent by weight of an additive selected from a nucleating agent, antioxidant, UV stabilizer, plasticizer, epoxy compound, melt strength additive, or a combination thereof, crosslinkers, and combinations thereof.

15 . The thermoplastic composition of claim 14 , comprising:
from 50 to 99.99 percent by weight of a modified endcapped polyalkylene terephthalate, wherein the modified endcapped polyalkylene terephthalate containing 50 to 300 ppm of tetra(C 1 -C 8 alkyl) titanate and 100 to 600 ppm of a phosphorus-containing compound, both based on the total amount of titanium present, wherein the phosphorus-containing compound is selected from the group consisting of phosphoric acid, poly(phosphoric acid), phosphorus acid, monobutyl phosphate, dibutyl phosphate, monoalkyl phosphates, dialkyl phosphates, and combinations thereof; from 0 to 60 percent by weight of a reinforcing filler which is glass; wherein the modified endcapped polyalkylene terephthalate contains 0.01 to 2.5 weight percent of an endcapping agent which is a primary alcohol having 10 carbon atoms or more and a boiling point of at least 232° C. at atmospheric pressure; from 0 to 1 percent by weight of a stabilizer; from 0 to 10 percent by weight of an impact modifier; from 0 to 5 percent by weight of a chain extender.

16 . The thermoplastic composition of claim 14 , comprising:
from 50 to 99.99 percent by weight of a modified polybutylene terephthalate, wherein the modified endcapped polyalkylene terephthalate contains 100 to 300 ppm of tetraisopropyl titanate and 30 to 100 ppm of phosphoric acid; from 1 to 60 percent by weight of a reinforcing filler which is glass; wherein the modified endcapped polyalkylene terephthalate contains 0.01 to 2.5 weight percent of an endcapping agent which is a primary alcohol selected from the group consisting of 1-decanol, 1-undecanol, 1-dodecanol, and 1-tridecanol; from 0.01 to 1 percent by weight of a stabilizer; from 1 to 10 percent by weight of an impact modifier; and from 1 to 5 percent by weight of a chain extender.

17 . The thermoplastic composition of claim 14 , comprising:
from 50 to 99.99 percent by weight of a modified polybutylene terephthalate, wherein the modified endcapped polyalkylene terephthalate contains 100 to 300 ppm of tetraisopropyl titanate and 30 to 100 ppm of phosphoric acid; from 5 to 50 percent by weight of a reinforcing filler which is glass; wherein the modified endcapped polyalkylene terephthalate contains 0.01 to 2.5 weight percent of an endcapping agent which is a primary alcohol selected from the group consisting of 1-decanol, 1-undecanol, 1-dodecanol, and 1-tridecanol; from 0.02 to 0.08 percent by weight of a stabilizer; from 1 to 10 percent by weight of an impact modifier; and from 1 to 4 percent by weight of a chain extender.

18 . The thermoplastic composition of claim 14 , comprising:
from 50 to 99.99 percent by weight of a modified polybutylene terephthalate containing 50 to 300 ppm of tetraisopropyl titanate and 100 to 600 ppm of phosphoric acid; from 25 to 35 percent by weight of a reinforcing filler which is glass; wherein the modified endcapped polyalkylene terephthalate contains 0.01 to 2.5 weight percent

Assignees

• Sabic Global Technologies Bv

Inventors

• Alidedeoglu Husnu Alp
• Gunale Tukaram
• Kannan Ganesh
• Chellamuthu Manojkumar

Classifications

• C08K7/14 Primary

  Glass · CPC title

• C08G63/916

  Dicarboxylic acids and dihydroxy compounds · 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

• C08G63/50

  by monohydric alcohols · CPC title

• C08L2207/20

  Recycled plastic · CPC title