GB866103A - Improved melamine resin colloid and manufacture of wet-strength paper therewith - Google Patents

Improved melamine resin colloid and manufacture of wet-strength paper therewith

Info

Publication number
GB866103A
GB866103A GB29802/57A GB2980257A GB866103A GB 866103 A GB866103 A GB 866103A GB 29802/57 A GB29802/57 A GB 29802/57A GB 2980257 A GB2980257 A GB 2980257A GB 866103 A GB866103 A GB 866103A
Authority
GB
United Kingdom
Prior art keywords
formaldehyde
colloidal
melamine
added
solution
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
Application number
GB29802/57A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by American Cyanamid Co filed Critical American Cyanamid Co
Publication of GB866103A publication Critical patent/GB866103A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08G12/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with substituted triazines
    • C08G12/32—Melamines
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/47—Condensation polymers of aldehydes or ketones
    • D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
    • D21H17/51—Triazines, e.g. melamine

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Paper (AREA)

Abstract

An aqueous colloidal solution of melamineformaldehyde condensate is produced by adding formaldehyde to a colloid aqueous solution of a partially polymerized cationic melamine-formaldehyde having a pH of 0,5-5, and ageing the resulting mixture, e.g. for about 8 hours. The amount of formaldehyde added may vary from 1/2 to 15 mols per mol of combined melamine in the initial solution. In examples the initial solution is prepared by dissolving spray-dried trimethylolmelamine in water, adding 0,9 mol HCl per mol of melamine and ageing to permit the resin particles to grow to colloidal size. Acetic, formic, phosphoric or sulphurous acid may be employed in place of hydrochloric. A polyhydric alcohol or polyhydric alcohol ether may also be added in preparing the initial solution. An example is also given of the application of the invention to a cationic colloidal solution of a urea-melamine-formaldehyde resin. The "fortified" colloidal solutions of the invention give paper of higher web strength than corresponding solutions to which no formaldehyde has been added or to which formaldehyde has been added before the resin particles have attained colloidal dimensions. Specifications 622,905, 623,355, 623,361, 623,362, 691,053 and U.S.A. Specifications 2,485,080, 2,548,513 and 2,559,221 are referred to.
GB29802/57A 1956-10-08 1957-09-23 Improved melamine resin colloid and manufacture of wet-strength paper therewith Expired GB866103A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US866103XA 1956-10-08 1956-10-08

Publications (1)

Publication Number Publication Date
GB866103A true GB866103A (en) 1961-04-26

Family

ID=22199715

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29802/57A Expired GB866103A (en) 1956-10-08 1957-09-23 Improved melamine resin colloid and manufacture of wet-strength paper therewith

Country Status (2)

Country Link
DE (1) DE1090078B (en)
GB (1) GB866103A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3039762A1 (en) * 1980-10-22 1982-05-27 Basf Ag, 6700 Ludwigshafen METHOD FOR PRODUCING PAPER WITH HIGH WET RESISTANCE
DE102005050658A1 (en) * 2005-10-20 2007-04-26 Basf Ag Process for reducing the absorption of water and water vapor and for increasing the dimensional stability of paper and paper products and use of coated paper products

Also Published As

Publication number Publication date
DE1090078B (en) 1960-09-29

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