Patent EP0081994A2 successfully refreshed from Google Patents.
EP0081994A2
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EP
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Preparation of thermosetting resins and of pigmented compositions thereof for coating on paper
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1982-12-10
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Granted: —
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Expires: 2002-12-10
Abstract
Abstract A thermosetting resin is prepared by mixing or reacting (a) an alkylene diamine or polyalkylenepolyamine with (b) an epihalohydrin (preferabiy chiorohydrin), and (Y) a watersoluble resin obtained by reacting (i) urea, (ii) a polyalkylenepolyamine, and (iii) a dibasic carboxylic acid (e.g. adipic) and reacting the resultant polyamidopolyurea (PAPU) formaldehyde. The PAPU can be made by reacting (i) + (ii) and the product with (iii), or (ii) + (iii) and the product with (i), at specified reaction conditions. (Y), (a) and (b) may all be reacted or mixed together, or first (Y) and (b) and then (a), or (a) and (b) then (Y). The thermosetting resin is mixed into a paper coating composition including a conventional pigment, binder and water, and the composition is coated onto paper and dried to make a coated paper which has good waterresistance (due to the resin (Y)) whilst being receptive to rotary offset printing ink. ,
Inventors
- 👤 Shigenao Kawakami
- 👤 Terumasa Saka
- 👤 Hisao Takagishi
- 👤 Shigeru Ura
- 👤 Mikio Iwata
- 👤 Yoshiharu Tokugawa
- 👤 Naoyoshi Jinno
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 15:22
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/62; C; C08; C08G; C08G69/00; C08G69/48; C08G71/00; C08G71/02; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; C08G73/022
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
44 words
A process of preparing a thermosetting resin in aqueous solution, comprising reacting or mixing (a) at least one alkylenediamine or-polyalkylenepolyamine, (b) epihalohydrin, and (Y) a water-soluble resin obtained by reacting urea, polyalkylenepolyamine, and dibasic carboxylic acid, and further reacting the resulting polyamidopolyurea with formaldehyde.
Claim 2
Dependent Claim
44 words
A process of preparing a thermosetting resin in aqueous solution, comprising reacting or mixing (a) at least one alkylenediamine or-polyalkylenepolyamine, (b) epihalohydrin, and (Y) a water-soluble resin obtained by reacting urea, polyalkylenepolyamine, and dibasic carboxylic acid, and further reacting the resulting polyamidopolyurea with formaldehyde.
Claim 3
Dependent Claim
71 words
A process as claimed in Claim 1, wherein said water-soluble resin (Y) was obtained by a deammoniation reaction between urea and polyalkylenepolyamine, then a dehydration condensation between the reaction product and dibasic carboxylic acid, and a deammoniation reaction between the resulting product and urea, and a reaction of the thus obtained polyamidopolyurea with formaldehyde in an aqueous solution under acidic condition, or intially under alkaline condition and then under acidic condition.
Claim 4
Dependent Claim
62 words
A process as claimed in Claim 1, wherein said water-soluble resin (Y) was obtained by a dehydration condensation between polyalkylenepolyamine and dibasic carboxylic acid, then a deammoniation reaction between the reaction product and urea, and a reaction of the thus obtained polyamidopolyurea with formaldehyde in an aqueous solution under an acidic condition, or initially under alkaline condition and then under acidic condition.
Claim 5
Dependent Claim
72 words
A method as claimed in Claim 2, wherein from 1.5 to 2.5 moles of polyalkylenepolyamine per mole of urea is used in the reaction between urea and polyalkylenepolyamine, and subsequently dibasic carboxylic acid is used in an amount of from 0.3 to 0.7 mole per mole of the polyalkylenepolyamine, and subsequently urea is used in an amount of from 0.2 to 1.5 moles per mole of secondary amino group in the polyalkylenepolyamine.
Claim 6
Dependent Claim
66 words
A method as claimed in Claim 2 or 4, wherein the temperature during the reaction between urea and polyalkylenepolyamine is maintained at from 100 o to 200°C, the temperature during the reaction between the resulting product and dibasic carboxylic acid is maintained at from 120° to 250°C, and the temperature during the reaction between the resulting product and urea is maintained at from 100° to 180°C.
Claim 7
Dependent Claim
54 words
A method as claimed in Claim 3, wherein from 1.4 to 3.0 moles of polyalkylenepolyamine is used per mole of dibasic carboxylic acid in the reaction between the dibasic carboxylic acid and the polyalkylenepolyamine, and the amount of urea used is from 0.2 to 1.0 mole per mole of the amino group of polyalkylenepolyamine.
Claim 8
Dependent Claim
51 words
A method as claimed in Claim 3 or 6, wherein the temperature during the reaction between the dibasic carboxylic acid and the polyalkylenepolyamine is maintained from 120 to 250°C, and the temperature during the reaction between the resulting product and urea is maintained at from 100 to 1 80 0 C.
Claim 9
Independent Claim
35 words
A method as claimed in any of Claims 1 to 7, wherein the amount of formaldehyde is from 0.2 to 1 mole per mole of the total amount of urea used for synthesizing the polyamidopolyurea.
Claim 10
Independent Claim
30 words
A method as claimed in any of Claims 1 to 8, wherein the temperature during the reaction between formaldehyde and polyamidopolyurea is maintained at from 40 to 80 0 C.
Claim 11
Dependent Claim
39 words
A method as claimed in Claim 1, wherein said thermosetting resin aqueous solution is obtained by mixing or simultaneously reacting components (a), (b) and (Y), or by reacting or mixing a reaction product between (Y) and (b) with (a).
Claim 12
Independent Claim
37 words
A method as claimed in any of Claims 1 to 10, wherein said thermosetting resin aqueous solution is obtained by reacting or mixing a reaction product (X) between components (a) and (b) with the water-soluble resin (Y).
Claim 13
Dependent Claim
29 words
A method as claimed in Claim 10, wherein the amount of (a) is from 0.1 to 3 moles per mole of the dibasic carboxylic acid used for synthesizing (Y).
Claim 14
Dependent Claim
24 words
A method as claimed in Claim 10 or 12, wherein the amount of (b) is from 0.1 to 4 moles per mole of (a).
Claim 15
Dependent Claim
28 words
A method as claimed in Claim 10, 12 or 13, wherein the temperature during the simultaneous reaction of (Y), (a) and (b) is maintained from 30 to 80°C.
Claim 16
Dependent Claim
42 words
A method as claimed in Claim 10, 12, 13 or 14, wherein the temperature of the reaction between (Y) and (b) is 30°C to reflux temperature, and the temperature of the reaction between the resulting product and (a) is 30 to 100°C.
Claim 17
Dependent Claim
28 words
A method as claimed, in Claim 11, wherein the amount of (a) is 0.05 to 5 moles per mole of the. dibasic carboxylic acid used for synthesizing (Y).
Claim 18
Dependent Claim
23 words
A method as claimed in Claim 11 or 16, wherein the molar ratio of (a) to (b) in (X) is 1:0.1 to 20.
Claim 19
Dependent Claim
24 words
A method as claimed in Claim 11, 16 or 17, wherein the temperature of the reaction between (a) and (b) is 30 to 80°C.
Claim 20
Dependent Claim
28 words
19 . Amethod as claimed in Claim 11, 16, 17 or 18, wherein the temperature of the reaction between (X) and (Y) is 20 to 80 0 C.
Claim 21
Independent Claim
31 words
A method as claimed in any of Claims 1 to 19, wherein the polyalkylenepolyamine is a compound having two primary amino groups and at least one secondary amino group per molecule..
Claim 22
Independent Claim
22 words
A method as claimed in any of Claims 1 to 20, wherein said dibasic carboxylic acid is an aliphatic dibasic carboxylic acid.
Claim 23
Dependent Claim
35 words
A composition for coating onto paper, containing a pigment and an aqueous binder as major components, and further containing a thermosetting resin in aqueous solution, obtained by the method of any of the preceding claims.
Claim 24
Dependent Claim
33 words
A composition as claimed in Claim 22, wherein the solids content of the thermosetting resin obtained from (a), (b) and (Y) is 0.05 to 5 weight%, based on the weight of the pigment.
Claim 25
Dependent Claim
17 words
A coated paper having coated thereon a paper coating composition as claimed in Claim 22 or 23.
References Cited (Backward Citations)
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