US4975499A
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US
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Polyamidoamine resin from mixture of diamine and polyalkylene polyamine
Assignee: Bayer AG
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Filing: 1989-03-13
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Granted: 1990-12-04
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Expires: 2009-03-13
Abstract
Abstract Cationic crosslinkable polyamidoamine resins which are obtainable by reaction of (A) a water-soluble polyamidoamine prepared from (1) aliphatic or aromatic dicarboxylic acids or functional derivatives thereof, such as anhydrides, esters or half-esters, and omega -aminocarboxylic acids containing at least 3 C atoms or lactams thereof, and (2) a polyamine mixture of ( alpha ) polyamines which contain at least two amino groups which are capable of amide formation and at least one further secondary or tertiary amino group, and ( beta ) polyamines which contain only two amino groups which are capable of amide formation, (B) with an epihalogenohydrin, in a molar ratio of 0.7 to 3.5 mol of epihalogenohydrin per mol of basic nitrogen in component (A), (C) with an inorganic base and (D) with 0.2 to 9.0 mol of a halogen-free mineral or carboxylic acid, the acid being added in at least an amount to give a pH of at least 5, are used as agents for imparting wet strength to paper.
Inventors
- 👤 Henning Bachem
- 👤 Janos Muszik
- 👤 Jurgen Reiners
- 👤 Carlhans Suling
- 👤 Wolf-Dieter Schroer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:53
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/48; C08G73/00; C08G73/02; C08G73/028; C08G73/0286; D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/54; D21H17/55; D21H21/00; D21H21/14; D21H21/18; D21H21/20
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
186 words
A cationic crosslinkable polyamidoamine resin obtained by reaction of (A) a water-soluble polyamidoamine prepared from (1) an aliphatic or aromatic dicarboxylic acid or functional derivative thereof an or a mixture of 1) with ω-aminocarboxylic acid containing at least 3 C atoms or a lactam thereof, and (2) a polyamine mixture of α) a polyamine which contains at least two amino groups which are capable of amide formation and at least one further secondary or tertiary amino group, and β) a polyamine which contains only two amino groups which are capable of amide formation, in a molar ratio of α):β) of 1:1 to 40:1, (B) with an epihalogenohydrin, in a molar ratio of 0.7 to 3.5 mol of epihalogenohydrin per mol of basic nitrogen in component A), (C) with an inorganic base in a molar ratio of 0.2 to 2.0 mol of base per mol of epihalogenohydrin group, and (D) with 0.2 to 9.0 mol of a halogen-free mineral or carboxylic acid per mol of basic nitrogen in component A, the acid being added in at least an amount to give a pH of at least 5.
Claim 2
Dependent Claim
186 words
A cationic crosslinkable polyamidoamine resin obtained by reaction of (A) a water-soluble polyamidoamine prepared from (1) an aliphatic or aromatic dicarboxylic acid or functional derivative thereof an or a mixture of 1) with ω-aminocarboxylic acid containing at least 3 C atoms or a lactam thereof, and (2) a polyamine mixture of α) a polyamine which contains at least two amino groups which are capable of amide formation and at least one further secondary or tertiary amino group, and β) a polyamine which contains only two amino groups which are capable of amide formation, in a molar ratio of α):β) of 1:1 to 40:1, (B) with an epihalogenohydrin, in a molar ratio of 0.7 to 3.5 mol of epihalogenohydrin per mol of basic nitrogen in component A), (C) with an inorganic base in a molar ratio of 0.2 to 2.0 mol of base per mol of epihalogenohydrin group, and (D) with 0.2 to 9.0 mol of a halogen-free mineral or carboxylic acid per mol of basic nitrogen in component A, the acid being added in at least an amount to give a pH of at least 5.
Claim 3
Dependent Claim
266 words
A cationic crosslinkable polyamidoamine resin according to claim 1, wherein said resin is obtained by reaction of (A) a water-soluble polyamidoamine having a base equivalent weight of ≧450 and a molecular weight of at least 800 and prepared from 1) an aliphatic saturated or olefinically unsaturated or aromatic dicarboxylic acid having 2 to 12 C atoms or a functional derivative thereof or a mixture of 1) with an ω-aminocarboxylic acid containing at least 3 to 6 C atoms or a lactam thereof, and 2) a polyamine mixture of α) a polyamine of the formulae ##STR4## and β) a polyamine of the formula ##STR5## wherein R 1 , R 6 and R 8 independently of one another stand for hydrogen or C 1 -C 4 -alkyl, R 2 , R 3 , R 4 and R 7 independently of one another stand for hydrogen, methyl or ethyl, R 5 stands for C 2 -C 4 -alkylene, a, b and e independently of one another stand for an integer from 0 to 4 and c and d independently of one another stand for an integer from 1 to 6, in a molar ratio of α:β=1-25:1, and in a molar ratio of 1:2=0.8-1.2:1, (B) with an epihalogenohydrin in a molar ratio of 0.7 to 3.5 mol, of epihalogenohydrin per mol of basic nitrogen in component A), (C) with an inorganic base, in a molar ratio of 0.2 to 2.0 mol, of base per mol of epihalogenohydrin group and (D) with 0.2 to 9.0 mol of a halogen-free mineral or carboxylic acid up to pH values of at least 5.
Claim 4
Dependent Claim
20 words
A cationic crosslinkable polyamidoamine resin according to claim 1, which has a weight average molecular weight of 2,000 to 200,000.
Claim 5
Dependent Claim
36 words
A cationic crosslinkable polyamidoamine resin according to claim 1, in a form of a 5 to 30% strength by weight solution or emulsion which has a viscosity of 15 to 300 m Pascals at 25° C.
Claim 6
Dependent Claim
51 words
A cationic crosslinkable polyamidoamine resin according to claim 1, wherein the base is LiOH, Ca(OH) 2 , Ba(OH) 2 , Sr(OH) 2 , NH 3 , Na 2 CO 3 , K 2 CO 3 , Na 3 PO 4 , K 3 PO 4 , KOH, NaOH or mixtures thereof.
Claim 7
Dependent Claim
59 words
A cationic crosslinkable polyamidoamine resin according to claim 1, wherein the halogen-free mineral or carboxylic acid or acid derivative thereof is sulphurous acid, nitric acid, sulphuric acid, phosphoric acid, alkali metal hydrogen sulphates, acetic acid, acetic anhydride, propionic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, formic acid, malic acid or citric acid or mixtures thereof.
Claim 8
Dependent Claim
32 words
A cationic crosslinkable polyamidoamine resin according to claim 1, in a form of a 15% strength by weight solution or emulsion having an organic halogen content of 0.01 to 0.5% by weight.
Claim 9
Dependent Claim
26 words
A cationic crosslinkable polyamidoamine resin according to claim 1, wherein with said epihalogenohydrin in B) there is a simultaneous or subsequent reaction with a polyamine A)2).
Claim 10
Dependent Claim
31 words
A cationic crosslinkable polyamidoamine resin according to claim 1, wherein the functional derivative of said aliphatic or aromatic dicarboxylic acid in A) 1) is an anhydride, an ester or a half-ester.
Claim 11
Dependent Claim
23 words
A cationic crosslinkable polyamidoamine resin according to claim 2, wherein A) the water-soluble polyamidoamine has a base equvalent weight of 500 to 1,000.
Claim 12
Dependent Claim
31 words
A cationic crosslinkable polyamidoamine resin according to claim 2, wherein the functional derivatives of said alphatic saturated or olefinically unsaturated or aromatic dicarboxylic acid is an anhydride, an ester or half-ester.
Claim 13
Dependent Claim
29 words
A cationic crosslinkable polyamidoamine resin according to claim 2, wherein said polyamine α) further comprises a moiety of the formula ##STR6## and the molar ratio of I:II is 4-100:0-1.
Claim 14
Dependent Claim
30 words
A cationic crosslinkable polyamidoamine resin according to claim 2, wherein said epihalogenohydrin in B) there is a simultaneous or subsequent reaction with an amine of the formula I to III.
Claim 15
Dependent Claim
29 words
A cationic crosslinkable polyamidoamine resin according to claim 13, wherein the molar ratio of said epihalogenohydrin per mole of basic nitrogen in component A) is 0.8 to 3.0 mol.
Claim 16
Dependent Claim
25 words
A cationic crosslinkable polyamidoamine resin according to claim 2, wherein the molar ratio of said inorganic base to said epihalogenohydrin is 0.3 to 1.5 mol.
Claim 17
Dependent Claim
31 words
A cationic crosslinkable polyamidoamine resin according to claim 2, wherein the amount of said halogen-free mineral carboxylic acid is 0.3 to 8.5 mol per mol. of basic nitrogen in component A.
Claim 18
Dependent Claim
29 words
A cationic crosslinkable polyamidoamine resin according to claim 2, wherein said halogen-free mineral or carboxylic acid is added in such an amount that the pH is 1.5 to 4.5.
Claim 19
Dependent Claim
20 words
A cationic crosslinkable polyamidoamine according to claim 4, wherein the viscosity is 20 to 250 m Pascals at 25° C.
Claim 20
Dependent Claim
37 words
A cationic crosslinkable polyamidoamine resin according to claim 1, wherein component A) comprises said aliphatic or aromatic dicarboxylic acid or functional derivative thereof and an ω-aminocarboxylic acid containing at least 3 C atoms or a lactam thereof.
Claim 21
Dependent Claim
37 words
A cationic crosslinkable polyamidoamine resin according to claim 2, wherein component A) comprises said aliphatic or aromatic discarboxylic acid or functional derivative thereof and an ω-aminocarboxylic acid containing at least 3 C atoms or a lactam thereof.
References Cited (Backward Citations)
US3352833A
Cited
US3951921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-03 | 1994-06-04 | 1994-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-03 | 1998-06-04 | 1998-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-03 | 2002-06-04 | 2002-12-04 | $7700.00 | Window Closed / Lapsed |