FR2197040A1 - Melamine/formaldehyde acidic colloidal soln. prepn. - storage stable, used in paper prodn. to increase wet strength - Google Patents

Melamine/formaldehyde acidic colloidal soln. prepn. - storage stable, used in paper prodn. to increase wet strength

Info

Publication number
FR2197040A1
FR2197040A1 FR7330730A FR7330730A FR2197040A1 FR 2197040 A1 FR2197040 A1 FR 2197040A1 FR 7330730 A FR7330730 A FR 7330730A FR 7330730 A FR7330730 A FR 7330730A FR 2197040 A1 FR2197040 A1 FR 2197040A1
Authority
FR
France
Prior art keywords
melamine
wet strength
storage stable
prepn
formaldehyde
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.)
Granted
Application number
FR7330730A
Other languages
French (fr)
Other versions
FR2197040B1 (en
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.)
BASF SE
Original Assignee
BASF SE
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
Priority claimed from DE19722241713 external-priority patent/DE2241713C3/en
Priority claimed from DE19732332046 external-priority patent/DE2332046C3/en
Application filed by BASF SE filed Critical BASF SE
Publication of FR2197040A1 publication Critical patent/FR2197040A1/en
Application granted granted Critical
Publication of FR2197040B1 publication Critical patent/FR2197040B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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

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

The process comprises precondensing melamine and HCHO (or a cpd forming HCHO) in an aqs. suspension at pH 4-9; followed by treatin gthe precondensate with excess HCHO in above pH range and finally acidifying the condensate suspension with HCl or an aliphatic carboxylic acid with apKa =3.5 and/or phosphoric acid. The soln. is storage stable for >=6 months without gelling and when incorporated in paper gives a prod. with superior wet strength than when prior art resins (as prepd by US 2986489) are used.
FR7330730A 1972-08-24 1973-08-24 Melamine/formaldehyde acidic colloidal soln. prepn. - storage stable, used in paper prodn. to increase wet strength Granted FR2197040A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19722241713 DE2241713C3 (en) 1972-08-24 1972-08-24 Process for the preparation of acidic colloidal solutions of melamine-formaldehyde resins
DE19732332046 DE2332046C3 (en) 1973-06-23 1973-06-23 Process for the preparation of acidic colloidal solutions of melamine-formaldehyde resins

Publications (2)

Publication Number Publication Date
FR2197040A1 true FR2197040A1 (en) 1974-03-22
FR2197040B1 FR2197040B1 (en) 1979-10-19

Family

ID=25763742

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7330730A Granted FR2197040A1 (en) 1972-08-24 1973-08-24 Melamine/formaldehyde acidic colloidal soln. prepn. - storage stable, used in paper prodn. to increase wet strength

Country Status (5)

Country Link
JP (1) JPS4993476A (en)
CA (1) CA1012666A (en)
CH (1) CH584242A5 (en)
FR (1) FR2197040A1 (en)
SE (1) SE405365B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2355066A1 (en) * 1976-06-18 1978-01-13 American Cyanamid Co PROCESS FOR REFINING SUGAR AND SYNTHETIC ORGANIC FLOCCULANTS INTENDED TO CLARIFY RED SUGAR LIQUORS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3117106A (en) * 1959-12-22 1964-01-07 American Cyanamid Co Water dispersible acid form melamine-formaldehyde resins
GB1012319A (en) * 1962-06-01 1965-12-08 British Industrial Plastics Water-soluble modified melamine-formaldehyde resins

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3117106A (en) * 1959-12-22 1964-01-07 American Cyanamid Co Water dispersible acid form melamine-formaldehyde resins
GB1012319A (en) * 1962-06-01 1965-12-08 British Industrial Plastics Water-soluble modified melamine-formaldehyde resins

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2355066A1 (en) * 1976-06-18 1978-01-13 American Cyanamid Co PROCESS FOR REFINING SUGAR AND SYNTHETIC ORGANIC FLOCCULANTS INTENDED TO CLARIFY RED SUGAR LIQUORS

Also Published As

Publication number Publication date
JPS4993476A (en) 1974-09-05
SE405365B (en) 1978-12-04
FR2197040B1 (en) 1979-10-19
CA1012666A (en) 1977-06-21
CH584242A5 (en) 1977-01-31

Similar Documents

Publication Publication Date Title
SE8102051L (en) KIT FOR MANUFACTURING MICROCAPPLES
YU45710B (en) PROCEDURE FOR MICROCAPPSULATION OF LIQUID MATERIAL
GB1400468A (en) Enzyme preparation and use thereof
FR2197040A1 (en) Melamine/formaldehyde acidic colloidal soln. prepn. - storage stable, used in paper prodn. to increase wet strength
DE3561463D1 (en) Process for the fabrication of aqueous dispersions of condensation products of urea and aldehydes with acid c-h and their use
ES341964A1 (en) Alkaline conversion of green tea
ES508193A0 (en) PROCEDURE FOR OBTAINING MELAMINE-FORMALDEHYDE RESINS SOLUBLE IN WATER AND STABLE ON STORAGE.
ES419889A1 (en) Process for manufacturing carrier sheets treated with hardenable aminoplast resin preliminary condensates for surface coating
ES494886A0 (en) PROCEDURE FOR THE OBTAINING OF MODIFIED ACRI-LATO MELAMINE RESINS, STABLE AT STORAGE
ES483042A1 (en) Process for the preparation of R.S. 5-p-hydroxyphenyl-2,4-imidazolidine dione or R.S. 5-p-hydroxyphenyl hydantoin.
DE69020035T2 (en) Process for the preparation of methylol hydentoin.
FR2322170A1 (en) Aminoplast resin moulding compsns. - contg. cellulose-free urea-formaldehyde or melamine-formaldehyde resin particles as filler opt. with cellulose
GB1013662A (en) Method for the production of synthetic plastic veneer
GB866103A (en) Improved melamine resin colloid and manufacture of wet-strength paper therewith
IT1041534B (en) Aminoplast resin moulding compsns. - contg. cellulose-free urea-formaldehyde or melamine-formaldehyde resin particles as filler opt. with cellulose
NL7510230A (en) Aminoplast resin moulding compsns. - contg. cellulose-free urea-formaldehyde or melamine-formaldehyde resin particles as filler opt. with cellulose
NO933759L (en) Aqueous urea / formaldehyde resins, process for their preparation, and use thereof
ES328662A1 (en) Procedure for the manufacture of resins urea-formol-alcohol furfurilico. (Machine-translation by Google Translate, not legally binding)
GB860703A (en) Resin solutions for preparing paper of improved wet strength
GB847154A (en) Process for the production of melamine formaldehyde resins
GB857155A (en) Method of producing highly condensed melamine-formaldehyde resins
GB1079490A (en) Aminotriazine resins
FR2237921A1 (en) Phenol-aldehyde resin resols - made from stable pre-condensates, for use as binders
GB950550A (en) Process for racemisation of optically active pyroglutamic acid
JPS51144451A (en) Preparation of aminoplast molding materials

Legal Events

Date Code Title Description
ST Notification of lapse