Silicon containing polymer flocculants

Patent metadata

Field	Value
Publication number	US-10301414-B2
Application number	US-201514960740-A
Country	US
Kind code	B2
Filing date	Dec 7, 2015
Priority date	Dec 8, 2014
Publication date	May 28, 2019
Grant date	May 28, 2019

Abstract

Disclosed herein are silicon containing polymers and compositions containing the same able to flocculate suspended solids in the Bayer or Sinter process stream.

First claim

What is claimed is:

1. A polymer comprising an A mer according to formula (I):

wherein:
R 1 and R 2 are each independently H;
T is —CH2-CH(OH)—CH2-O—CH2-CH2-CH2 ;
each R is independently selected from the group consisting of hydrogen, C 1-20 alkyl, C 1 - 20 alkenyl, C 6-12 aryl, C 7-20 aralkyl, a group I metal ion, a group II metal ion, and NR′ 4 + ; wherein R′ is independently selected from the group consisting of hydrogen, C 1-20 alkyl, C 1-20 alkenyl, C 6-12 aryl, and C 7-20 aralkyl;
and wherein R′ is independently unsubstituted, hydroxy-substituted, or beta hydroxy substituted or a mixture, in any proportion, of any of these groups;
and wherein the amount of A mer according to formula (I) is about 1% or greater by mole, based on total mers in the polymer;
and further comprising:
an E mer according to formula (V);

wherein R 1 is H or C1-6 alkyl and R 6 is H, group I metal ion, group II metal ion, or N(R 3 ) 4 ±
where each R 3 is independently H, C1-6 alkyl,
or a F mer according to formula (VI);

wherein R 1 is H or C1-6 alkyl and R 7 is H, group I metal ion, group II metal ion, or N(R 3 ) 4 ±
where each R 3 is independently H, C1-6 alkyl,
or a G mer according to formula (VII);

where R 1 is H or C 1-6 alkyl or any combinations thereof.

2. The polymer of claim 1 further comprising about 7.5% or less by mole, based on total mers in the polymer, of a B mer according to formula (II);

wherein R 1 is H or C1-6 alkyl and each R a is independently selected from the group consisting of hydrogen, C 1-20 alkyl, C 1-20 alkenyl, C 6-12 aryl, C 7-20 aralkyl, a group I metal ion, a group II metal ion, and NR′ 4 + ; wherein R′ is independently selected from the group consisting of hydrogen, C 1-20 alkyl, C 1-20 alkenyl, C 6-12 aryl, and C 7-20 aralkyl; and wherein R′ is independently unsubstituted, hydroxy-substituted, or beta hydroxy substituted or a mixture, in any proportion, of any of these groups;
and a H mer according to formula VIII combined;

wherein R 4 and R 5 are each independently H or optionally substituted C1-6 alkyl.

3. The polymer of claim 2 further comprising about 7.5% or less by mole, based on total mers in the polymer, of a B-1 mer according to formula (II-A) or a B-2 mer according to formula (II-B) combined.

4. The polymer according to claim 2 , wherein R 4 and R 5 are both H.

5. The polymer according to claim 4 , wherein R 6 and R 7 are selected from Na + and N(R 3 ) 4 + or mixtures thereof, where each R 3 is independently H or C 1-6 alkyl.

6. The polymer according to claim 1 , wherein R is Na + .

7. The polymer according to claim 1 , wherein the amount of A mer according to formula (I)

wherein R 1 is H or C 1-6 alkyl and each R is independently selected from the group consisting of hydrogen, C 1-20 alkyl, C 1-20 alkenyl, C 6-12 aryl, C 7-20 aralkyl, a group I metal ion, a group II metal ion, and NR′ 4 + ; wherein R′ is independently selected from the group consisting of hydrogen, C 1-20 alkyl, C 1-20 alkenyl, C 6-12 aryl, and C 7-20 aralkyl; and wherein R′ is independently unsubstituted, hydroxy-substituted, or beta hydroxy substituted or a mixture, in any proportion, of any of these groups; is from about 1% to about 90% by mole, based on total mers in the polymer;
further comprising about 1% or less by mole, based on total mers in the polymer, of a B mer according to formula (II);

wherein each R 1 is H or C 1-6 alkyl and each R a is independently selected from the group consisting of hydrogen, C 1-20 alkyl, C 1-20 alkenyl, C 6-12 aryl, C 7-20 aralkyl, a group I metal ion, a group II metal ion, and NR′ 4 + ; wherein R′ is independently selected from the group consisting of hydrogen, C 1-20 alkyl, C 1-20 alkenyl, C 6-12 aryl, and C 7-20 aralkyl; and wherein R′ is independently unsubstituted, hydroxy-substituted, or beta hydroxy substituted or a mixture, in any proportion, of any of these groups; and
further comprising about 1% or less by mole, based on total mers in the polymer, of a C mer according to formula (III);

wherein R 1 is H or C 1-6 alkyl and m is 1 to 6, and each R b is independently selected from the group consisting of hydrogen, C 1-20 alkyl, C 1-20 alkenyl, C 6-12 aryl, C 7-20 aralkyl, a group I metal ion, a group II metal ion, and NR' 4 + ; wherein R′ is independently selected from the group consisting of hydrogen, C 1-20 alkyl, C 1-20 alkenyl, C 6-12 aryl, and C 7-20 aralkyl; and wherein R′ is independently unsubstituted, hydroxy-substituted, or beta hydroxy substituted or a mixture, in any proportion, of any of these groups.

8. The polymer according to claim 7 , wherein the amount of E mer according to formula (V);

wherein R 1 is H or C 1-6 alkyl and R 6 is H, group I metal ion, group II metal ion, or N(R 3 ) 4 + where each R 3 is independently H, C 1-6 alkyl,
is from about 1% to about 90% by mole, based on total mers in the polymer and wherein the amount of the F mer according to formula (VI);

wherein R 1 is H or C 1-6 alkyl and R 7 is H, group I metal ion, group II metal ion, or N(R 3 ) 4 + where each R 3 is independently H, C 1-6 alkyl,
is from about 0.1% to about 90% by mole, based on total mers in the polymer and the amount of G mer according to formula (VII);

wherein R 1 is H or C 1-6 alkyl and is from about 1% to about 30% by mole, based on total mers in the polymer.

9. The polymer according to claim 1 , wherein the polymer has a standard viscosity (SV) of about 9 mPa·s or greater, as determined based upon a 0.1% polymer solution.

10. The polymer of claim 9 having a SV of about 10 mPa·s or greater.

11. A composition comprising a first polymer according to claim 1 and a second polymer different from the first polymer wherein the second polymer is chosen from polyacrylic acid, and salts thereof; including sodium and ammonium salts; hydroxamic acid polymers and salts thereof, including sodium and ammonium salts; acrylic acid:acrylamide copolymers and salts thereof, including sodium and ammonium salts, starch, and dextran.

12. A method of flocculating a solid suspended in a B

Assignees

• Cytec Ind Inc

Inventors

• Song Airong
• Stigers Dannon
• Wei Xinyu
• Zhang Lei

Classifications

• C08L33/08

  Homopolymers or copolymers of acrylic acid esters · CPC title

• C08F30/08

  containing silicon · CPC title

• C02F1/56

  Macromolecular compounds · CPC title

• C01F7/0653

  characterised by the flocculant added to the slurry (final clarification of the aluminate solution C01F7/47) · CPC title

• C08F220/10

  Esters · CPC title