CA1054758A - Process for preventing the separation of resins in paper making - Google Patents
Process for preventing the separation of resins in paper makingInfo
- Publication number
- CA1054758A CA1054758A CA220,562A CA220562A CA1054758A CA 1054758 A CA1054758 A CA 1054758A CA 220562 A CA220562 A CA 220562A CA 1054758 A CA1054758 A CA 1054758A
- Authority
- CA
- Canada
- Prior art keywords
- acid
- additive
- pulp
- phosphonic acid
- member selected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011347 resin Substances 0.000 title claims abstract description 32
- 229920005989 resin Polymers 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000000926 separation method Methods 0.000 title claims abstract description 12
- 239000000654 additive Substances 0.000 claims abstract description 43
- 230000000996 additive effect Effects 0.000 claims abstract description 43
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 26
- 150000001447 alkali salts Chemical class 0.000 claims abstract description 25
- 239000002253 acid Substances 0.000 claims abstract description 17
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000123 paper Substances 0.000 claims abstract description 13
- 235000011007 phosphoric acid Nutrition 0.000 claims abstract description 12
- 229920000137 polyphosphoric acid Polymers 0.000 claims abstract description 11
- 229910018828 PO3H2 Inorganic materials 0.000 claims abstract description 9
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 239000011087 paperboard Substances 0.000 claims abstract description 7
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 5
- 239000011111 cardboard Substances 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 11
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 claims description 8
- -1 diaminotetramethylene phos-phonic acid Chemical compound 0.000 claims description 7
- 125000000217 alkyl group Chemical group 0.000 claims description 6
- 150000001261 hydroxy acids Chemical class 0.000 claims description 6
- 125000000896 monocarboxylic acid group Chemical group 0.000 claims description 6
- QLNNMIUPRPKARZ-UHFFFAOYSA-N n'-cyclopentylmethanediamine Chemical compound NCNC1CCCC1 QLNNMIUPRPKARZ-UHFFFAOYSA-N 0.000 claims description 6
- 229940120146 EDTMP Drugs 0.000 claims description 5
- 229940090960 diethylenetriamine pentamethylene phosphonic acid Drugs 0.000 claims description 5
- DUYCTCQXNHFCSJ-UHFFFAOYSA-N dtpmp Chemical compound OP(=O)(O)CN(CP(O)(O)=O)CCN(CP(O)(=O)O)CCN(CP(O)(O)=O)CP(O)(O)=O DUYCTCQXNHFCSJ-UHFFFAOYSA-N 0.000 claims description 5
- NFDRPXJGHKJRLJ-UHFFFAOYSA-N edtmp Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O NFDRPXJGHKJRLJ-UHFFFAOYSA-N 0.000 claims description 5
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 claims description 4
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims description 4
- 239000000174 gluconic acid Substances 0.000 claims description 4
- 235000012208 gluconic acid Nutrition 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- JKTORXLUQLQJCM-UHFFFAOYSA-N 4-phosphonobutylphosphonic acid Chemical compound OP(O)(=O)CCCCP(O)(O)=O JKTORXLUQLQJCM-UHFFFAOYSA-N 0.000 claims description 3
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 3
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 3
- FRCICXIVPRNPLM-UHFFFAOYSA-N [amino(phosphono)methyl]phosphonic acid Chemical compound OP(=O)(O)C(N)P(O)(O)=O FRCICXIVPRNPLM-UHFFFAOYSA-N 0.000 claims description 3
- 235000015165 citric acid Nutrition 0.000 claims description 3
- XQRLCLUYWUNEEH-UHFFFAOYSA-N diphosphonic acid Chemical compound OP(=O)OP(O)=O XQRLCLUYWUNEEH-UHFFFAOYSA-N 0.000 claims description 3
- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical compound OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 claims description 3
- 229960001484 edetic acid Drugs 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 229960003330 pentetic acid Drugs 0.000 claims description 3
- AOHJOMMDDJHIJH-UHFFFAOYSA-N propylenediamine Chemical compound CC(N)CN AOHJOMMDDJHIJH-UHFFFAOYSA-N 0.000 claims description 3
- 239000011975 tartaric acid Substances 0.000 claims description 3
- 235000002906 tartaric acid Nutrition 0.000 claims description 3
- UNXRWKVEANCORM-UHFFFAOYSA-N triphosphoric acid Chemical compound OP(O)(=O)OP(O)(=O)OP(O)(O)=O UNXRWKVEANCORM-UHFFFAOYSA-N 0.000 claims description 3
- 229940048102 triphosphoric acid Drugs 0.000 claims description 3
- SZHQPBJEOCHCKM-UHFFFAOYSA-N 2-phosphonobutane-1,2,4-tricarboxylic acid Chemical compound OC(=O)CCC(P(O)(O)=O)(C(O)=O)CC(O)=O SZHQPBJEOCHCKM-UHFFFAOYSA-N 0.000 claims description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 2
- 235000019830 sodium polyphosphate Nutrition 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims description 2
- 229940116254 phosphonic acid Drugs 0.000 claims 9
- DOAAIMWVMVKYJZ-UHFFFAOYSA-N (1-hydroxy-1,3-diphosphonopropyl)phosphonic acid Chemical compound OP(=O)(O)C(P(O)(O)=O)(O)CCP(O)(O)=O DOAAIMWVMVKYJZ-UHFFFAOYSA-N 0.000 claims 2
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 claims 2
- YDHWWBZFRZWVHO-UHFFFAOYSA-N [hydroxy(phosphonooxy)phosphoryl] phosphono hydrogen phosphate Chemical compound OP(O)(=O)OP(O)(=O)OP(O)(=O)OP(O)(O)=O YDHWWBZFRZWVHO-UHFFFAOYSA-N 0.000 claims 2
- HJMZMZRCABDKKV-UHFFFAOYSA-N carbonocyanidic acid Chemical compound OC(=O)C#N HJMZMZRCABDKKV-UHFFFAOYSA-N 0.000 claims 2
- 229960004106 citric acid Drugs 0.000 claims 2
- 229950006191 gluconic acid Drugs 0.000 claims 2
- 229960001367 tartaric acid Drugs 0.000 claims 2
- 150000003628 tricarboxylic acids Chemical class 0.000 claims 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract 1
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 15
- 229910001369 Brass Inorganic materials 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- 239000010951 brass Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 241000274582 Pycnanthus angolensis Species 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 235000010980 cellulose Nutrition 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 150000003009 phosphonic acids Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 101001133936 Homo sapiens Prolyl 3-hydroxylase 2 Proteins 0.000 description 1
- 102100034015 Prolyl 3-hydroxylase 2 Human genes 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 229940106135 cellulose Drugs 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 description 1
- 125000001476 phosphono group Chemical group [H]OP(*)(=O)O[H] 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 235000011118 potassium hydroxide Nutrition 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Paper (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The present invention provides in the production of paper; cardboard or paper board from a resin containing pulp or a mechanical pulp a process for inhibiting the separation of resins from said pulp which comprises adding to said pulp an additive including at least one phosphonic acid having the general formula wherein R is H, -CH3, -NH2, -CH2OH, -(CH2)nCH3, -(CH2)nCOOH, or - (CH2)nPO3H2 R2 is H, -OH, -PO3H2, -(CH2)n-COOH, , H2O3PH2C- N-(CH2)n , or R3 is H, -OH, -NH2, -CH3 -(CH2)nCH3, -(CH2)nCOOH, -NH-(CH2)n-PO3H2, -NH?CH2COOH, and n is a number from 0 to 6 and an alkali salt thereof and at least one member selected from an orthophosphoric acid and a polyphosphoric acid or an alkali salt thereof, said additive being present in the pulp in an amount from 0.02 to 1.0% based on the weight of the dry pulp.
The invention also provides an additive for use in said process which comprises (a) at least one phosphonic acid having the general formula given above and (b) at least one member selected from orthophosphonic acid and polyphosphoric acids and their alkali salts the weight ratio of (a) to (b) being in the range 1:10 to 10:1.
The present invention provides in the production of paper; cardboard or paper board from a resin containing pulp or a mechanical pulp a process for inhibiting the separation of resins from said pulp which comprises adding to said pulp an additive including at least one phosphonic acid having the general formula wherein R is H, -CH3, -NH2, -CH2OH, -(CH2)nCH3, -(CH2)nCOOH, or - (CH2)nPO3H2 R2 is H, -OH, -PO3H2, -(CH2)n-COOH, , H2O3PH2C- N-(CH2)n , or R3 is H, -OH, -NH2, -CH3 -(CH2)nCH3, -(CH2)nCOOH, -NH-(CH2)n-PO3H2, -NH?CH2COOH, and n is a number from 0 to 6 and an alkali salt thereof and at least one member selected from an orthophosphoric acid and a polyphosphoric acid or an alkali salt thereof, said additive being present in the pulp in an amount from 0.02 to 1.0% based on the weight of the dry pulp.
The invention also provides an additive for use in said process which comprises (a) at least one phosphonic acid having the general formula given above and (b) at least one member selected from orthophosphonic acid and polyphosphoric acids and their alkali salts the weight ratio of (a) to (b) being in the range 1:10 to 10:1.
Description
~S~7~
The present invention relates to a process for inhibit-ing the separation of resins in the production of paper, box board and paper board.
Copending Canadian Application No. ~ S~/ filed ~eb~dr~ 2~, ~97~ discloses a process for preventing separation of resins in the production of paper, box board and paper board from a resin containing pulp or mechanical pulp which comprises adding to the pulp an additive including at least one L phosphonic acid compound having the general formula I
wherein R is H, -CH3, -NH2, -CH2OH, -(CH2)nCH3, 2 n ~(CH2) n~NH2 -N =C or ~(CH2)nPo3H2 (CH2)nC 3 ~CH2-P03H2 R2 is H, -OH, -PO3H2, -N
~ (CH2)nCOOH ~ CH2P3H2 -(CH2)n~COOH, -CH , -N ~CH2PO3H2 (CH2)nCOOH 2 n ~CH PO H
/ CH2PO3H2 ~ C 2 3 2 H2O3P H2C~N (CH2)n \ ¦ N / 2 3 2 CH2P03H2, ~/ -- CH2P2H2 r I cH2-N--CH2PO3H2 or l l / CH2PO3H2 -N
~1~
R3 is H, -OH, -NH2, -CH3 -(CH2)nCH3, -(CH2)nCOOH, -NH-(CH2)n-po3H2~ NH.C 2 -N
and n is a number from 0 to 6 or an alkali metal salt thereof either alone or together with an aminopolycarboxylic acid and/or a hydroxy acid and their alkali salts in amounts of 0.02 to 1.0% by weight based on the dry pulp.
Suitable phosphonic acid compounds of the formula for use in the process include aminomethane diphosphonic acid, aminotrismethylenephosphonic acid, diethylenetriamine pentamethylene phosphonic acid, propylene-diamine tetra-methylene phosphonic acid, ethylene diamine tetramethylene phosphonic acid, 1,2-cyclohexane diaminotetramethylene phosphonic acid, aminomethylcyclopentyl amine (2) -tetra-methylene phosphonic acid, N-phosphonomethane-l-aminoethane-l,l-diphosphonic acid and acetamidino-ethane diphosphonic acid.
Particularly effective nitrogen free compounds include 1-hydroxyethane-l,l-diphosphonic acid and l-hydroxy propane-1,1,3-triphosphonic acid. Also carboxyalkane amino alkane phosphonic acids such as bis-N-carboxy-methane-amino ethane diphosphonic acid and phosphono butane tricarboxylic acid may be used.
The hydroxy acids particularly include gluconic acid, citric acid and tartaric acid. The polyaminocarboxylic acids in-clude ethylene diamine tetracetic acid, diethylene triamine pentaacetic acid and nitrilo-triacetic acid.
The additive is suitably added in an amount from 0.02 to 1.0~ by weight, preferably 0.04 to 0.3% by weight based on the weight of the dry cellulose-containing material.
-` ~05~758 Substances having a dispersing or wetting effect e.g.
alkylphenol polyglycol ether can be used for improving the action of the additive.
When a mixture of phosphonic acid, polyamino carboxy-lic acids and hydroxy acids and their alkali salts are used as the additive the ratio of phosphonic acid to the remainder of the components is suitably in the range 1:6 to 6:1. A mixture of amino lower alkane phosphonic acids containing 2 to 6 carbon atoms, diethylene triamine pentacetic acid and gluconic acid and their alkali salts for the additive has been found to be particularly preferred.
It has now been found that the additive in the aforesaid process may contain the orthophosphoric acid and/or poly-phosphoric acid and their alkali salts in addition to or in place of the aminopolycarboxylic acids and/or hydroxy acid and their alkali salts with similar or even superior results.
According to the present invention therefore there is provided in the production of paper, cardboard or paperboard from a resin containing pulp or a mechanical pulp a process for inhibiting the separation of resins from said pulp which comprises adding to said pulp an additive including at least one phosphonic acid having the general formula I
Rl f R3 ~05~
wherein R is H, -CH3, -NH2, -CH2OH (CH2)ncH3' 2 n / (CH2)n NH2 -N = C ~ or ~(cH2)nPo3H2 (CH2)n 3 ~CH2 -P03H2 R2 is H, -OH, -PO3H2, -N
~(CH2 ) nCOOH ~CH2P3H2 -(CH ) ~COOH, -CH , -N
The present invention relates to a process for inhibit-ing the separation of resins in the production of paper, box board and paper board.
Copending Canadian Application No. ~ S~/ filed ~eb~dr~ 2~, ~97~ discloses a process for preventing separation of resins in the production of paper, box board and paper board from a resin containing pulp or mechanical pulp which comprises adding to the pulp an additive including at least one L phosphonic acid compound having the general formula I
wherein R is H, -CH3, -NH2, -CH2OH, -(CH2)nCH3, 2 n ~(CH2) n~NH2 -N =C or ~(CH2)nPo3H2 (CH2)nC 3 ~CH2-P03H2 R2 is H, -OH, -PO3H2, -N
~ (CH2)nCOOH ~ CH2P3H2 -(CH2)n~COOH, -CH , -N ~CH2PO3H2 (CH2)nCOOH 2 n ~CH PO H
/ CH2PO3H2 ~ C 2 3 2 H2O3P H2C~N (CH2)n \ ¦ N / 2 3 2 CH2P03H2, ~/ -- CH2P2H2 r I cH2-N--CH2PO3H2 or l l / CH2PO3H2 -N
~1~
R3 is H, -OH, -NH2, -CH3 -(CH2)nCH3, -(CH2)nCOOH, -NH-(CH2)n-po3H2~ NH.C 2 -N
and n is a number from 0 to 6 or an alkali metal salt thereof either alone or together with an aminopolycarboxylic acid and/or a hydroxy acid and their alkali salts in amounts of 0.02 to 1.0% by weight based on the dry pulp.
Suitable phosphonic acid compounds of the formula for use in the process include aminomethane diphosphonic acid, aminotrismethylenephosphonic acid, diethylenetriamine pentamethylene phosphonic acid, propylene-diamine tetra-methylene phosphonic acid, ethylene diamine tetramethylene phosphonic acid, 1,2-cyclohexane diaminotetramethylene phosphonic acid, aminomethylcyclopentyl amine (2) -tetra-methylene phosphonic acid, N-phosphonomethane-l-aminoethane-l,l-diphosphonic acid and acetamidino-ethane diphosphonic acid.
Particularly effective nitrogen free compounds include 1-hydroxyethane-l,l-diphosphonic acid and l-hydroxy propane-1,1,3-triphosphonic acid. Also carboxyalkane amino alkane phosphonic acids such as bis-N-carboxy-methane-amino ethane diphosphonic acid and phosphono butane tricarboxylic acid may be used.
The hydroxy acids particularly include gluconic acid, citric acid and tartaric acid. The polyaminocarboxylic acids in-clude ethylene diamine tetracetic acid, diethylene triamine pentaacetic acid and nitrilo-triacetic acid.
The additive is suitably added in an amount from 0.02 to 1.0~ by weight, preferably 0.04 to 0.3% by weight based on the weight of the dry cellulose-containing material.
-` ~05~758 Substances having a dispersing or wetting effect e.g.
alkylphenol polyglycol ether can be used for improving the action of the additive.
When a mixture of phosphonic acid, polyamino carboxy-lic acids and hydroxy acids and their alkali salts are used as the additive the ratio of phosphonic acid to the remainder of the components is suitably in the range 1:6 to 6:1. A mixture of amino lower alkane phosphonic acids containing 2 to 6 carbon atoms, diethylene triamine pentacetic acid and gluconic acid and their alkali salts for the additive has been found to be particularly preferred.
It has now been found that the additive in the aforesaid process may contain the orthophosphoric acid and/or poly-phosphoric acid and their alkali salts in addition to or in place of the aminopolycarboxylic acids and/or hydroxy acid and their alkali salts with similar or even superior results.
According to the present invention therefore there is provided in the production of paper, cardboard or paperboard from a resin containing pulp or a mechanical pulp a process for inhibiting the separation of resins from said pulp which comprises adding to said pulp an additive including at least one phosphonic acid having the general formula I
Rl f R3 ~05~
wherein R is H, -CH3, -NH2, -CH2OH (CH2)ncH3' 2 n / (CH2)n NH2 -N = C ~ or ~(cH2)nPo3H2 (CH2)n 3 ~CH2 -P03H2 R2 is H, -OH, -PO3H2, -N
~(CH2 ) nCOOH ~CH2P3H2 -(CH ) ~COOH, -CH , -N
2 n \ (CH2)nCOOH \ ~ CH2PO3H2 / CH2PO3H2 ~ CH2 3 2 H2O3PH2c- N (CH2)n \ ~ N ~ 2 3 2 or I-CH2 -N - CH2PO3H2 ~ ~CH2P3H2 R is H, -OH, -NH2, -CH3 ~(CH2)nCH3' 2 n ~CH2COOH
N ( 2)n 3 2' 2 and n is an integer from 0 to 6 or an alkali salt thereof and at least one member selected from an orthophosphoric acid and a polyphosphonic acid or an alkali salt thereof, said additive being present in the pylp in an amount from 0.02 to 1.0% based on the weight of the dry pulp.
The present invention also provides an additive for use in said process which additive comprises 1~5~758 (a) at least one phosphonic ac~d having the general formula Rl f R3 wherein Rl is H, -CH3, -NH2, -CH OH -(CH2) CH , -(CH ) COOH, /(CH2)n-NH2 -N = C or ~(cH2)nPo3H2 (CH2) nCH3 R2 is H, -OH, -PO3H2, -N
CH -PO H
(CH2)nCH /n ~CH2P3H2 -(CH ) COOH, -CH , -N
2 n (CH2)nCH \/ H2PO3H2 CH2PO3H2 ~ N CH2 3 2 H2O3PH2c- N-(CH2)n -N \ ' 2 3 2 or I _ I-CH2- N -CH2po3 2 ~ CH2P03H2 l )-N
i H -OH -NH2, -CH3 -(CH2)nCH3, 2 n ~NH~(CH2)n~P3H2' -NH CH2COOH' -N
and n is a number from 0 to 6 and (b) at least one member selected from orthophosphonic and polyphosphoric acids and their alkali salts the weight ratio of (a) to tb) approximately in the range of 1:10 to 10:1.
A mixture of said phosphonic acids and acid or neutral salts of orthophosphoric acid is preferable as the additive.
The proportions of the components of the additive may vary within wide limits and suitably range from about 10:1 to 1:10. An economically desirable ratio in the additive is approximately 1 part of phosphonic acid to 4 parts of phosphoric acid, computed as a 100% substance. The proportions i~ the mixture may also be so selected to be in an inverse order when special circum-stances make this necessary.
From the group of the polyphosphoric acids and their salts those compounds having the general formula Hn+2PnO3n+l, wherein n is a number from approximately 2 to60, may suitablly be used. Such compounds include for examplej diphosphoric acid, triphosphoric acid, tetraphosphoric acids and medium to higher polyphosphoric acids and their alkali salts.
In practice the components of the additive may be added to the starting material either individually or in admixture. The components of the additive may be added at different points during the process. In the production of pulp the additive components may be added to the cooking acid, to the hogged chips or during the washing process or during the bleaching process. In the production of mechanical wood pulp the additive can be added to the water of the pulp grinder or to the freshly prepared mechanical wood pulp. In the production of paper the most favourable point of addition of the additive 75~
depends on the point of maximum resin separation. The additive is usually added in the hollander or pulper. However, depending on the operating conditions, it can also be added to a pulp vat or to the breast box.
The pH values of the paper pulp may be constant, for example, at a value between 4.5 and 8. Under certain conditions these limits can be decreased or increased.
The present invention will be further illustrated by way of the following Examples in which in order to provide satisfactory means of comparison, all the tests (Examples 1 to
N ( 2)n 3 2' 2 and n is an integer from 0 to 6 or an alkali salt thereof and at least one member selected from an orthophosphoric acid and a polyphosphonic acid or an alkali salt thereof, said additive being present in the pylp in an amount from 0.02 to 1.0% based on the weight of the dry pulp.
The present invention also provides an additive for use in said process which additive comprises 1~5~758 (a) at least one phosphonic ac~d having the general formula Rl f R3 wherein Rl is H, -CH3, -NH2, -CH OH -(CH2) CH , -(CH ) COOH, /(CH2)n-NH2 -N = C or ~(cH2)nPo3H2 (CH2) nCH3 R2 is H, -OH, -PO3H2, -N
CH -PO H
(CH2)nCH /n ~CH2P3H2 -(CH ) COOH, -CH , -N
2 n (CH2)nCH \/ H2PO3H2 CH2PO3H2 ~ N CH2 3 2 H2O3PH2c- N-(CH2)n -N \ ' 2 3 2 or I _ I-CH2- N -CH2po3 2 ~ CH2P03H2 l )-N
i H -OH -NH2, -CH3 -(CH2)nCH3, 2 n ~NH~(CH2)n~P3H2' -NH CH2COOH' -N
and n is a number from 0 to 6 and (b) at least one member selected from orthophosphonic and polyphosphoric acids and their alkali salts the weight ratio of (a) to tb) approximately in the range of 1:10 to 10:1.
A mixture of said phosphonic acids and acid or neutral salts of orthophosphoric acid is preferable as the additive.
The proportions of the components of the additive may vary within wide limits and suitably range from about 10:1 to 1:10. An economically desirable ratio in the additive is approximately 1 part of phosphonic acid to 4 parts of phosphoric acid, computed as a 100% substance. The proportions i~ the mixture may also be so selected to be in an inverse order when special circum-stances make this necessary.
From the group of the polyphosphoric acids and their salts those compounds having the general formula Hn+2PnO3n+l, wherein n is a number from approximately 2 to60, may suitablly be used. Such compounds include for examplej diphosphoric acid, triphosphoric acid, tetraphosphoric acids and medium to higher polyphosphoric acids and their alkali salts.
In practice the components of the additive may be added to the starting material either individually or in admixture. The components of the additive may be added at different points during the process. In the production of pulp the additive components may be added to the cooking acid, to the hogged chips or during the washing process or during the bleaching process. In the production of mechanical wood pulp the additive can be added to the water of the pulp grinder or to the freshly prepared mechanical wood pulp. In the production of paper the most favourable point of addition of the additive 75~
depends on the point of maximum resin separation. The additive is usually added in the hollander or pulper. However, depending on the operating conditions, it can also be added to a pulp vat or to the breast box.
The pH values of the paper pulp may be constant, for example, at a value between 4.5 and 8. Under certain conditions these limits can be decreased or increased.
The present invention will be further illustrated by way of the following Examples in which in order to provide satisfactory means of comparison, all the tests (Examples 1 to
3) were carried out at a pH value of 7.
Example 1 Without additive:
In a sulphite pulp, which was known to cause diffi-culties on the paper machine due to separation of resin, the total resin content was determined by extraction with dichloro-methane and a value of 0.448% was thus obtained. The proportion of detrimental resin was 8.7% of the total resin content. This amount of resin was determined in the following manner:
100 g of the above-mentioned pulp were mashed and a 4 suspension;n water was thus obtained. This pulp suspension was circulated in a laboratory hollander without grinding. The temp-erature was 40C and the pH value of the suspension was 7. In order to collect the resin separated from the pulp, a previously cleaned brass plate was suspended in the circulating paper pulp.
At the end of the test the pulp was discharged from the labor-atory hollander, whereupon the hollander and the brass plate were rinsed with water. The resin deposited on the hollander walls and on the suspended brass plate was removed by means of cellu-lose wadding, which had been wetted with dichloromethane. The wadding was then extracted with dichloromethane. The brass plate was then rinsed several times with dichloromethane. The ~75~
entire dichloromethane from the extraction and from the rinsing liquid was collected and evaporated. The remaining resin was weighed out. 0.0391 g of resin was thus obtained corresponding to 8.7% based on the total resin content.
Example 2 The same pulp as in Example 1 was treated in the same manner and, prior to the circulation period, it was mixed with a solution of 4 parts of 75% phosphoric acid and 3 parts of 18%
ethylenediamine tetramethylene-phosphonic acid, which had been adjusted with a 50% solution of caustic soda to a pH value of 7, and was further treated in the same manner as in Example 1.
The proportion of detrimental resin was 0.015%, based on the weight of the pulp (3.35% by weight of the total resin content.) Example 3 This test was carried out similarly to the tests in Examples 1 and 2.
As the agent for preventing resin separation, 0.5%
of a solution of 17 parts of a 37% diethylenetriamine-penta-methylene-phosphonic acid and 23 parts of a 75% phosphoric acid, which had been adjusted with a 50% caustic potash solution to a pH value of 7, was added prior to the start of the circulation period.
The resin separated during the test was 0.0112~ based on the weight of the pulp (2.5% of the total resin content).
Example 4 3800 litres of water, 120 kg of unbleached sulphite pulp and 80 kg of bleached sulphite pulp were put into a pulp engine and ground to 40SR.
Prior to the grinding, 3 kg of a 10% solution of a sodium polyphosphate, the average composition of which corresponds to the formula NalOP8025, and 0.5 kg of a 20% solution of the sodium salt of N-phosphono methylene-l-aminomethane-l,l-diphos-phonic acid were added to the fibrous pulp mixture.
After the grinding and gluing with a 4~ resin glue the pulp was discharged from the pulp engine into the pulp vat.
This manner of treating the pulp was repeated until the material requirement for a 2-day production of paper was obtained. The accumulated paper pulp was then processed to paper on the paper machine. Although the pulp used was known to cause difficulties due to separation of resin, evident from torn-off paper and holes in the paper, such disadvantages were not observed during the test.
The substantial reduction in the separation of resins, as shown in the examples hereinbefore, are sufficient for re-moving the usual difficulties caused by resins in paper making.
g _
Example 1 Without additive:
In a sulphite pulp, which was known to cause diffi-culties on the paper machine due to separation of resin, the total resin content was determined by extraction with dichloro-methane and a value of 0.448% was thus obtained. The proportion of detrimental resin was 8.7% of the total resin content. This amount of resin was determined in the following manner:
100 g of the above-mentioned pulp were mashed and a 4 suspension;n water was thus obtained. This pulp suspension was circulated in a laboratory hollander without grinding. The temp-erature was 40C and the pH value of the suspension was 7. In order to collect the resin separated from the pulp, a previously cleaned brass plate was suspended in the circulating paper pulp.
At the end of the test the pulp was discharged from the labor-atory hollander, whereupon the hollander and the brass plate were rinsed with water. The resin deposited on the hollander walls and on the suspended brass plate was removed by means of cellu-lose wadding, which had been wetted with dichloromethane. The wadding was then extracted with dichloromethane. The brass plate was then rinsed several times with dichloromethane. The ~75~
entire dichloromethane from the extraction and from the rinsing liquid was collected and evaporated. The remaining resin was weighed out. 0.0391 g of resin was thus obtained corresponding to 8.7% based on the total resin content.
Example 2 The same pulp as in Example 1 was treated in the same manner and, prior to the circulation period, it was mixed with a solution of 4 parts of 75% phosphoric acid and 3 parts of 18%
ethylenediamine tetramethylene-phosphonic acid, which had been adjusted with a 50% solution of caustic soda to a pH value of 7, and was further treated in the same manner as in Example 1.
The proportion of detrimental resin was 0.015%, based on the weight of the pulp (3.35% by weight of the total resin content.) Example 3 This test was carried out similarly to the tests in Examples 1 and 2.
As the agent for preventing resin separation, 0.5%
of a solution of 17 parts of a 37% diethylenetriamine-penta-methylene-phosphonic acid and 23 parts of a 75% phosphoric acid, which had been adjusted with a 50% caustic potash solution to a pH value of 7, was added prior to the start of the circulation period.
The resin separated during the test was 0.0112~ based on the weight of the pulp (2.5% of the total resin content).
Example 4 3800 litres of water, 120 kg of unbleached sulphite pulp and 80 kg of bleached sulphite pulp were put into a pulp engine and ground to 40SR.
Prior to the grinding, 3 kg of a 10% solution of a sodium polyphosphate, the average composition of which corresponds to the formula NalOP8025, and 0.5 kg of a 20% solution of the sodium salt of N-phosphono methylene-l-aminomethane-l,l-diphos-phonic acid were added to the fibrous pulp mixture.
After the grinding and gluing with a 4~ resin glue the pulp was discharged from the pulp engine into the pulp vat.
This manner of treating the pulp was repeated until the material requirement for a 2-day production of paper was obtained. The accumulated paper pulp was then processed to paper on the paper machine. Although the pulp used was known to cause difficulties due to separation of resin, evident from torn-off paper and holes in the paper, such disadvantages were not observed during the test.
The substantial reduction in the separation of resins, as shown in the examples hereinbefore, are sufficient for re-moving the usual difficulties caused by resins in paper making.
g _
Claims (21)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In the production of paper; cardboard or paper-board from a resin containing pulp or a mechanical pulp a process for inhibiting the separation of resins from said pulp which comprises adding to said pulp an additive including at least one phosphonic acid having the general formula wherein R is H, -CH3, -NH2, -CH2OH, -(CH2)nCH3, -(CH2)nCOOH, or -(CH2)nPO3H2 R2 iS H, -OH, -PO3H2, -(CH2)n?COOH, , or R3 is H, -OH, -NH2, -CH3 -(CH2)nCH3, -(CH2)nCOOH, -NH-(CH2)n-PO3H2, -NH?CH2COOH, and n is a integer from 0 to 6 or an alkali salt thereof and at least one member selected from an orthophosphoric acid and a polyphosphoric acid or an alkali salt thereof, said additive being present in the pulp in an amount from 0.02 to 1.0% based on the weight of the dry pulp.
2. A process as claimed in claim 1 in which the additive includes at least one member selected from an amino polycarboxylic acid and a hydroxy acid or an alkali salt there-of.
3. A process as claimed in claim 2 in which the additive includes gluconic acid, citric acid, tartaric acid, ethylene diamine tetracetic acid, diethylene triamine penta-acetic acid, nitrilo-acetic acid or an alkali salt thereof.
4. A process as claimed in claim 3 in which the additive includes at least one member selected from aminomethane diphosphonic acid, aminotrismethylene phosphonic acid, diethylene triamine pentamethylene phosphonic acid, propylenediamine tetra-methylene phosphonic acid, ethylene diamine tetramethylene phosphonic acid, 1,2-cyclohexane diaminotetramethylene phos-phonic acid, aminomethylcyclopentyl amine (2) -tetra methylene phosphonic acid, N-phosphonomethane- 1-aminoethane-1,1-diphos-phonic acid, and acetamidino-ethane diphosphonic acid or an alkali salt thereof.
5. A process as claimed in claim 3 in which the additive includes at least one member selected from 1-hydroxy-ethane-1,1-diphosphonic acid and 1-hydroxy propane-1,1,3-tri-phosphonic acid or an alkali salt thereof.
6. A process as claimed in claim 3 in which the additive includes at least one member selected from bis-N-car-boxymethane-amino ethane diphosphonic acid and phosphonobutane tricarboxylic acid.
7. A process according to claim 1, 2 or 3 in which the additive is present in an amount from 0.04 to 0.3% by weight of the dry pulp.
8. A process as claimed in claim 1 in which the additive is a mixture of said phosphonic acid and an acid or neutral salt of orthophosphoric acid.
9. A process as claimed in claim 8 in which the weight ratio of said phosphonic acid to orthophosphoric acid in the additive is from 1:10 to 10:1.
10. A process as claimed in claim 1 in which the polyphosphoric acid has the formula Hn+2?Pn?O3n+1 wherein n is a number from about 2 to 60.
11. A process as claimed in claim 1 in which the polyphosphoric acid is selected from diphosphoric acid, tri-phosphoric acid, tetraphosphoric acid and their alkali salts.
12. A process as claimed in claim 1 in which the additive is a mixture of orthophosphoric acid and either ethylenediamine-tetramethylene phosphonic acid or diethylene triamine pentamethylene phosphonic acid.
13. A process as claimed in claim 1 in which the additive is a mixture of sodium polyphosphate of the average composition Na10P8O25 and the sodium salt of N-phosphonomethyl-ene-1-amino-methane-1, 1-diphosphonic acid.
14. An additive for use in inhibiting the separation of resin from a resin containing pulp according to the process of claim 1 comprising at least one phosphonic acid having the general formula wherein R1 is H, -CH3, -NH2, -CH2OH, -(CH2)nCH3, -(CH2)nCOOH, or -(CH2)nPO3?2 R2 is H, -OH, -PO3H2, -(CH2)n?COOH, , H2O2PH2C- N-(CH2)n , or R3 is H, -OH, -NH2' -CH3 -(CH2)nCH3, -(CH2)nCOOH, -NH(CH2)n PO3H2' -NH?CH2COOH, and n is a number from 0 to 6 (b) at least one member selected from otrhophosphonic acid and polyphosphoric acids and their alkali salts the weight ratio of (a) to (b) being approximately in the range of 1:10 to 10:1 and (c) at least one member selected from an aminopolycarboxylic acid and a hydroxy acid or an alkali salt thereof.
15. An additive as claimed in claim 14, which includes gluconic acid, citric acid, tartaric acid, ethylene diamine tetracetic acid, diethylene triamine pentaacetic acid, nitrilo-acetic acid or an alkali salt thereof.
16. An additive as claimed in claim 15, which includes at least one member selected from aminomethane diphosphonic acid, aminotrismethylene phosphonic acid, diethylene triamine penta-methylene phosphonic acid, propylenediamine tetramethylene phosphonic acid, ethylene diamine tetramethylene phosphonic acid, diaminotetramethylene phosphonic acid, aminomethylcyclopentyl amine (2) -tetra methylene phosphonic acid, N-phosphonomethane- 1-aminoethane-1, 1-diphosphonic acid, and acetamidinoethane diphosphonic acid or an alkali salt thereof.
17. An additive as claimed in claim 15, which includes at least one member selected from 1-hydroxyethane-1, 1-diphos-phonic acid and 1-hydroxy propane-1, 1,3-tri-phosphonic acid or an alkali salt thereof.
18. An additive as claimed in claim 15, which includes at least one member selected from bis-N-carboxymethane-amino ethane diphosphonic acid and photohontobutane tricarboxylic acid.
19. An additive as claimed in claim 14, in which is a mixture of said phosphonic acid and an acid or neutral salt of orthophosphoric acid.
20. An additive as claimed in claim 14, in which the polyphosphoric acid has the formula Hn + 2 Pn.03n + 1 wherein n is a number from about 2 to 60.
21. An additive as claimed in claim 14, in which the polyphosphoric acid is selected from diphosphoric acid, triphosphoric acid, tetraphosphoric acid and their alkali salts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA220,562A CA1054758A (en) | 1975-02-21 | 1975-02-21 | Process for preventing the separation of resins in paper making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA220,562A CA1054758A (en) | 1975-02-21 | 1975-02-21 | Process for preventing the separation of resins in paper making |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1054758A true CA1054758A (en) | 1979-05-22 |
Family
ID=4102340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA220,562A Expired CA1054758A (en) | 1975-02-21 | 1975-02-21 | Process for preventing the separation of resins in paper making |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1054758A (en) |
-
1975
- 1975-02-21 CA CA220,562A patent/CA1054758A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20080113202A (en) | Use of modified inorganic particles in deinking | |
| US4294575A (en) | Peroxide stabilization | |
| CA1175204A (en) | Process for deinking waste paper | |
| JPH11181690A (en) | Fiber-treating agent composition | |
| CA1319778C (en) | Controlling deposits on paper machine felts and the like | |
| EP1392609B1 (en) | Method for inhibiting calcium salt scale | |
| US4098814A (en) | N-phosphono methylene amino alkane phosphonic acid compounds, process of producing same, and method and compositions of using same | |
| AU2003205232B2 (en) | Enhancing brightness and brightness stability of paper containing mechanical pulp | |
| AU2002312342A1 (en) | Method for inhibiting calcium salt scale | |
| US4239643A (en) | Peroxide stabilization | |
| CA1079010A (en) | Process for preventing the separation of resins in paper making | |
| CA1054758A (en) | Process for preventing the separation of resins in paper making | |
| US20110155334A1 (en) | Use of Modified Inorganic Particles With Deinking | |
| AU2003205232A1 (en) | Enhancing brightness and brightness stability of paper containing mechanical pulp | |
| US4010067A (en) | Process of preventing formation of resinous deposits in the manufacture of paper and the like | |
| US5013404A (en) | Process for alkaline peroxide bleaching of wood pulp using a quaternary amine as additive | |
| CA2175062C (en) | Aminoalkane diphosphonic acids in pulp bleaching | |
| JPH07279081A (en) | Method for improving releasability of wet paper from stone roll | |
| US5385639A (en) | Deinking wastepaper printed with oil-based ink | |
| DE4128084A1 (en) | Beta-alanine-N,N-di:acetic acid, alkali or ammonium salt complex former in paper mfr. - useful for biodegradable alkaline earth and heavy metal ion complexant in bleaching mechanical wood pulp and printed waste paper de inking | |
| EP0369711B1 (en) | Phosphate composition and uses thereof | |
| EP0885326A1 (en) | System of chemicals and method for deinking of waste paper | |
| WO1996028605A1 (en) | Use of aminomethylene phosphono group-containing polymers as complexing agents | |
| FI126957B (en) | Process for treating fibrous material and new composition | |
| PH26950A (en) | Controlling deposits on paper machine felts using cationic polymer and cationic surfactant mixture |