GB598561A - The manufacture of paper and photographic sensitive paper - Google Patents

The manufacture of paper and photographic sensitive paper

Info

Publication number
GB598561A
GB598561A GB914045A GB914045A GB598561A GB 598561 A GB598561 A GB 598561A GB 914045 A GB914045 A GB 914045A GB 914045 A GB914045 A GB 914045A GB 598561 A GB598561 A GB 598561A
Authority
GB
United Kingdom
Prior art keywords
melamine
paper
formaldehyde
resin
mols
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
GB914045A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
Filing date
Publication date
Priority to US532299A priority Critical patent/US2548513A/en
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB598561A publication Critical patent/GB598561A/en
Expired 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
    • 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
    • D21H17/63—Inorganic compounds
    • D21H17/64—Alkaline compounds
    • 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
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums
    • 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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • 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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
    • D21H23/06—Controlling the addition
    • D21H23/14—Controlling the addition by selecting point of addition or time of contact between components
    • D21H23/16—Addition before or during pulp beating or refining

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)

Abstract

Paper of high wet-strength is made from pulp to which is added a melamine-formaldehyde or a melamine-monoureide-formaldehyde resin, e.g. having a ratio of formaldehyde to melamine of 1 to 6 : 1. The resin is prepared, e.g. by reacting 20 mols of hydrogen chloride with 20 of urea in distilled water and 20 of melamine. The melamine-monoureide is separated by crystallization and dried, 11.83 mols thereof dissolved with rapid stirring in 75 mols of formaldehyde in water and the solution rapidly cooled. The pulp is sized, e.g. with resin or stearic acid saponified with caustic soda before adding the melamine resin. Starch, glues, and dyes &c., may also be added. The precipitant, e.g. aluminium chloride is such that polyvalent inorganic acid ions are not present in the product.
GB914045A 1944-04-22 1945-04-12 The manufacture of paper and photographic sensitive paper Expired GB598561A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US532299A US2548513A (en) 1944-04-22 1944-04-22 Method of making high wet strength paper

Publications (1)

Publication Number Publication Date
GB598561A true GB598561A (en) 1948-02-20

Family

ID=1629655

Family Applications (1)

Application Number Title Priority Date Filing Date
GB914045A Expired GB598561A (en) 1944-04-22 1945-04-12 The manufacture of paper and photographic sensitive paper

Country Status (1)

Country Link
GB (1) GB598561A (en)

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