Stabilised compositions containing acrylamide polymers, and method for the tertiary production of crude oil using said compositions

Patent metadata

Field	Value
Publication number	US-2016200969-A1
Application number	US-201414912991-A
Country	US
Kind code	A1
Filing date	Aug 14, 2014
Priority date	Aug 22, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

The present application relates to compositions comprising at least one acrylamide polymer P and at least one stabilizer S selected from sterically hindered amines; more particularly, the composition may be an aqueous solution comprising at least one acrylamide polymer P and at least one stabilizer S. In addition, the present invention relates to a process for producing the composition and to the use thereof in mineral oil production.

First claim

1 .- 18 . (canceled)

19 . A composition comprising at least one acrylamide polymer, which comprises at least 10% by weight of (meth)acrylamide, based on the total amount of all the monomers in the acrylamide polymer, and at least one stabilizer of formula (I)

where:
Z is a bivalent group that optionally includes groups selected from C(R 6 ) 2 , O, S, N—R′ or C═O, where the Z group together with the carbon atoms C 1 , C 2 and the nitrogen atom N forms a 5- to 8-membered ring, where R′ is selected from H, C 1-20 -alkyl, C 2-20 -alkenyl, C 6-20 -aryl, C 7-32 -arylalkyl, C 1-20 -hydroxyalkyl, C 1-20 -aminoalkyl, C 1-20 -cyanoalkyl, C 1-20 -haloalkyl, C 1-20 -sulfoalkyl, or C 1-20 -phosphonoalkyl;
where R 6 is independently selected from: H; OH; CN; C 1-20 -alkyl; C 2-20 -alkenyl; C 2-20 -alkynyl; C 6-20 -aryl; C 7-32 -arylalkyl; C 1-20 -alkoxy; C 1-20 -hydroxyalkyl; C 1-20 -aminoalkyl; C 1-20 -cyanoalkyl; C 1-20 -haloalkyl; halogen; C 1-20 -sulfoalkyl; C 1-20 -phosphonoalkyl; —(CH 2 —CH(R a )—O) q —H with q=1-20 and R a =H or C 1-6 -alkyl; —O—C(═O)R b with R b =H, C 1-20 -alkyl, C 2-20 -alkenyl, C 2-20 -alkynyl, C 6-20 -aryl or C 7-32 -arylalkyl; —O—C(═O)—(CH 2 ) m —C(═O)—O—R c ; —O—C(═O)—Y—C(═O)—O—R c , where m=1-10, R a =H, C 1-20 -alkyl, C 2-20 -alkenyl, C 2-20 -alkynyl, C 6-20 -aryl, C 7-32 -arylalkyl or 1,2,2,6,6-pentamethylpiperidin-4-yl and Y is a C 240 -alkenylene group; —O—R d with R d =C 2-20 -alkenyl, C 2-20 -alkynyl, C 6-20 -aryl, C 7-32 -arylalkyl or 1,2,2,6,6-pentamethylpiperidin-4-yl; —NR x R y ; —N(R x )—C(═O)R y ; —N(R x )—C(═O)—Y—C(═O)—O—R y ; —N(R x )—(CH 2 ) r —NR y R z where R x , R y and R z are each independently H, C 1-20 -alkyl, C 2-20 -alkenyl, C 2-20 -alkynyl, C 6-20 -aryl, C 7-32 -arylalkyl, C 1-20 -hydroxyalkyl, C 1-20 -aminoalkyl or 1,2,2,6,6-pentamethylpiperidin-4-yl, r=1-10 and Y is a C 2-10 -alkenylene group; —(O—CH 2 —CH(R e )—(CH 2 ) i ) p —O—R e′ with p=1-20, i=0 or 1, R e =H, OH or C 1-6 -alkyl, and R e′ =H or C 1-18 -alkyl; —S—R f ; —S—S—R f with R f =H, C 1-20 -alkyl, C 2-20 -alkenyl, C 6-20 -aryl or C 7-32 -arylalkyl;
or where two R 6 radicals together with the carbon atom to which they are bonded form a —C—(O—CH 2 —CH 2 —O)—, —C—(O—CH 2 —CH 2 —CH 2 —O), —C—(O—C(CH 3 ) 2 —C(CH 3 ) 2 —O)— or —C—(NH—C(═O)—NH—C(═O))— ring;

R 1 , R 2 , R 3 and R 4
are each independently selected from C 1-20 -alkyl, C 2-20 -alkenyl, C 6-20 -aryl, C 7-32 -arylalkyl, C 1-20 -alkoxy, C 1-20 -hydroxyalkyl, C 1-20 -aminoalkyl or C 1-20 -haloalkyl;
or the R 1 and R 2 radicals together with C 1 , or the R 3 and R 4 radicals together with C 2 , form a ring which comprises 5 to 7 carbon atoms and which may optionally be substituted by one or more R 6 groups;

R 5 is H; C 1-20 -alkyl; C 2-20 -alkenyl; C 2-20 -alkynyl; C 6-20 -aryl; C 7-32 -arylalkyl; C 1-20 -alkoxy; C 4-8 -cycloalkoxy; C 1-20 -hydroxyalkyl; C 1-20 -aminoalkyl; C 1-20 -cyanoalkyl; C 1-20 -haloalkyl; C 1-20 -sulfoalkyl; C 1-20 -phosphonoalkyl; —(CH 2 —CH(R a )—O) q —H with q=1-20 and R a =H or C 1-6 -alkyl; —O—C(═O)R b with R b =H, C 1-20 -alkyl, C 2-20 -alkenyl, C 2-20 -alkynyl, C 6-20 -aryl or C 7-32 -arylalkyl; —O—C(═O)—(CH 2 ) m —C(═O)—O—R c ; —O—C(═O)—Y—C(═O)—O—R c , where m=1-10, R c =H, C 1-20 -alkyl, C 2-20 -alkenyl, C 2-20 -alkynyl, C 6-20 -aryl, C 7-32 -arylalkyl or 1,2,2,6,6-pentamethylpiperidin-4-yl and Y is a C 2-10 -alkenylene group; —O—R d with R d =C 2-20 -alkenyl, C 2-20 -alkynyl, C 6-20 -aryl, C 7-32 -arylalkyl or 1,2,2,6,6-pentamethylpiperidin-4-yl; —(O—CH 2 —CH(R e )—(CH 2 ) i ) p —O—R e′ with p=1-20, i=0 or 1, R e =H, OH or C 1-6 -alkyl and R e′ =H or C 1-8 -alkyl; —C(═O)—R h with R h =1-1, C 1-20 -alkyl, C 2-20 -alkenyl, C 6-20 -aryl or C 7-20 -arylalkyl; 2,2,6,6-tetramethyl-4-piperidinol-1-yl-alkyl or 4-(2,2,6,6-tetramethyl-4-piperidinol-1-ylalkyl)benzyl.

20 . The composition according to claim 19 , wherein the at least one acrylamide polymer P is a copolymer comprising (meth)acrylamide and at least one anionic, monoethylenically unsaturated, hydrophilic monomer (b) comprising at least one acidic group selected from the group of —COOH, —SO 3 H and —PO 3 H 2 or salts thereof.

21 . The composition according to claim 19 , wherein the at least one acrylamide polymer is a copolymer comprising (meth)acrylamide and at least one monoethylenically unsaturated, hydrophobically associating monomer (a), where the monomer (a) has the following structure (IP):
H 2 C═C(R 1P )—R 2P —O-(—CH 2 —CH(R 3P )—O—) k -(—CH 2 —CH(R 4P )—O—) l -R 5P   (IP)
where R 1P is H or a methyl group; R 2P is a single bond or a divalent linking group selected from the group consisting of —(C n H 2n )—, —O—(C n′ H 2n′ )— and C(O)—O—(C n″ H 2n″ )—, where n is a natural number from 1 to 6 and n′ and n″ are each a natural number from 2 to 6; R 3P is independently H, methyl or ethyl; R 4P is independently a hydrocarbyl radical of at least 2 carbon atoms; R 5P is H or a hydrocarbyl radical having 1 to 30 carbon atoms; k is an integer from 10 to 150; and l is an integer from 5 to 25.

22 . The composition according to claim 19 , wherein the at least one acrylamide polymer is a copolymer comprising (meth)acrylamide and at least one cationic monomer of the structure (KI):

where
R 1K , R 2K , R 3K , R 4K , R 5K , R 6K
are each independently H or C 1-4 alkyl;

Q is C 1-8 -alkylene;
R 7K is a C 8-30 alkyl or C 8-30 -arylalkyl;
M K is a halogen selected from bromine, chlorine, iodine, fluorine and a negatively charged counterion.

23 . The composition according to claim 19 , wherein the at least one stabilizer of formula (I) is present, where:
Z is a bivalent group comprising 2 to 5 groups selected from C(R 6 ) 2 , N—R′ and C═O, where the Z group together with the carbon atoms C 1 , C 2 and the nitrogen atom N forms a 5- to 8-membered ring, where R′ is selected from H, C 1-18 -alkyl and C 1-18 -hydroxyalkyl;
where R 6 is selected from H; OH; CN; C 1-20 -alkyl; C 1-20 -hydroxyalkyl; —O—C(═O)R b with R b =H, C 1-20 -alkyl, C 2-20 -alkenyl, C 2-20 -alkynyl, C 6-20 -aryl or C 7-32 -arylalkyl; —O—C(═O)—(CH 2 ) m —C(═O)—O—R e , where m=1-10, R c H, C 1-20 -alkyl, C 2-20 -alkenyl, C 2-20 -alkynyl, C 6-20 -aryl, C 7-32 -arylalkyl or 1,2,2,6,6-pentamethylpiperidin-4-yl; —O—R d with R d =C 2-20 -alkenyl, C 2-20 -alkynyl, C 6-20 -aryl, C 7-32 -arylalkyl or 1,2,2,6,6-pentamethylpiperidin-4-yl; —NR x R y , where R x and R y are each independently H, C 1-20 -alkyl, C 2-20 -alkenyl, C 6-20 -aryl, C 7-32 -arylalkyl, C 1-20 -hydroxyalkyl or C 1-20 -aminoalkyl;
or where two R 6 radicals together with the carbon atom to which they are bonded form a —C—(O—CH 2 —CH 2 —O)—, —C—(O—CH 2 —CH 2 —CH 2 —O)—, —C—(O—C(CH 3 ) 2 —C(CH 3 ) 2 —O)— or C—(NH—C(═O)—NH—C(═O))— ring;
R 1 , R 2 , R 3 and R 4
are each independently selected from C 1-20 -alkyl, C 2-20 -alkenyl and C 7-32 -arylalkyl;
R 5 is H; C 1-20 -alkyl; C 2-20 -alkenyl; C 7-32 -arylalkyl; C 1-20 -hydroxyalkyl; C 1-20 -cyanoalkyl; C 1-20 -sulfoalkyl; C 1-20 -phosphonoalkyl; —(CH 2 —CH(R a )—O) m —H with m=1-20 and R a =H or C 1-6 -alkyl; —C(═O)—R h with R h =H, C 1-20 -alkyl, C 2-20 -alkenyl, C 6-20 -aryl or C 7-20 -arylalkyl; 2,2,6,6-tetramethyl-4-piperidinol-1-ylalkyl or 4-(2,2,6,6-tetramethyl-4-piperidinol-1-ylalkyl)benzyl.

24 . The composition according to claim 19 , wherein the at least one stabilizer is selected from compounds of formulae (II) to (IV)

where X is independently a gr

Assignees

• Basf Se

Inventors

• Reichenbach-Klinke Roland
• Schöning Kai-Uwe
• Rotzinger Bruno
• Langlotz Björn

Classifications

• C08F230/02

  containing phosphorus · CPC title

• C08K5/3435 Primary

  Piperidines · CPC title

• C08F216/1425

  Monomers containing side chains of polyether groups · CPC title

• C08F220/382

  and containing oxygen, e.g. 2-sulfoethyl (meth)acrylate · CPC title

• C08L33/26

  Homopolymers or copolymers of acrylamide or methacrylamide · CPC title