GB1036572A - Improvements in or relating to translucent paper - Google Patents

Improvements in or relating to translucent paper

Info

Publication number
GB1036572A
GB1036572A GB4673961A GB4673961A GB1036572A GB 1036572 A GB1036572 A GB 1036572A GB 4673961 A GB4673961 A GB 4673961A GB 4673961 A GB4673961 A GB 4673961A GB 1036572 A GB1036572 A GB 1036572A
Authority
GB
United Kingdom
Prior art keywords
paper
components
polyhydroxy
component
translucent
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
GB4673961A
Inventor
James Bryan Stone
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.)
Hall Harding Ltd
Original Assignee
Hall Harding Ltd
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 Hall Harding Ltd filed Critical Hall Harding Ltd
Priority to GB4673961A priority Critical patent/GB1036572A/en
Priority to DEH47745A priority patent/DE1214989B/en
Publication of GB1036572A publication Critical patent/GB1036572A/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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/26—Agents rendering paper transparent or translucent
    • 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
    • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
    • D21H17/57—Polyureas; Polyurethanes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Translucent is produced by applying a polyisocyanate component, a polyhydroxy component and an organic solvent inert to both components to absorbent paper and allowing the two components to react together in the paper to form a translucent macromolecular polyurethane. The polyhydroxy component may be a polyester containing free hydroxyl groups, e.g. a polyester produced from a dibasic carboxylic acid, a diol and a triol, a polyether containing free hydroxyl groups, ethylene glycol or trimethylol propane and the polyisocyanate component may be a compound derived from toluylene 2, 4-diisocyanate and timethylol propane. Suitable organic solvents are ethylene glycol acetate, xylene, xylol and butyl acetate. The treating composition may also contain a catalyst, e.g. a zinc solution in mineral spirits, and the components may be allowed to react together at an elevated temperature. The paper is preferably treated with the composition comprising the polyisocyanate, polyhydroxy compound, organic solvent and, if desired, catalyst, wound on to a spindle, allowed to stand for a sufficient time to enable the required degree of absorption by the material to be effected and for the reaction of the two components to occur in the paper, unwound and the solvent evaporated. The paper may subsequently be coated with an aqueous composition comprising isopropyl alcohol, urea, thio urea, tartaric acid, magnesium chloride, resorcinol, 4(N: N-diethylamino) benzene diazonium chloride zinc salt, polyvinylacetate, polyvinyl alcohol and rice starch, and dried at a temperature of 130 DEG C.ALSO:Translucent paper is produced by applying a polyisocyanate component, a polyhydroxy component and an organic solvent inert to both components to absorbent paper and allowing the two components to react together in the paper to form a translucent macromolecular polyurethane. The polyhydroxy component may be a polyester containing free hydroxyl groups, e.g. a polyester produced from a dibasic carboxylic acid, a diol and a triol, apolyether containing free hydroxyl groups, ethylene glycol or trimethylol propane and the polyisocyanate component may be a compound derived from toluylene, 2, 4-diisocyanate and trimethylol propane. Suitable organic solvents are ethylene glycol acetate, xylene, xylol and butyl acetate. The treating composition may also contain a catalyst, e.g. a zinc solution in mineral spirits, and the components may be allowed to react together at an elevated temperature. The paper is preferably treated with the composition comprising the polyisocyanate, polyhydroxy compound, organic solvent and, if desired, catalyst, wound on to a spindle, allowed to stand for a sufficient time to enable the required degree of absorption by the paper to be effected and for the reaction of the two components to occur in the paper, unwound and the solvent evaporated. The paper may subsequently be coated with an aqueous composition comprising isopropyl alcohol, urea, thiourea, tartaric acid, magnesium chloride, resorcinol, 4(N : N-diethylamino) benzene diazonium chloride zinc salt, polyvinylacetate, polyvinyl alcohol and rice starch, and dried at a temperature of 130 DEG C.
GB4673961A 1961-12-29 1961-12-29 Improvements in or relating to translucent paper Expired GB1036572A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4673961A GB1036572A (en) 1961-12-29 1961-12-29 Improvements in or relating to translucent paper
DEH47745A DE1214989B (en) 1961-12-29 1962-12-19 Process for making sheet or film material transparent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4673961A GB1036572A (en) 1961-12-29 1961-12-29 Improvements in or relating to translucent paper

Publications (1)

Publication Number Publication Date
GB1036572A true GB1036572A (en) 1966-07-20

Family

ID=10442401

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4673961A Expired GB1036572A (en) 1961-12-29 1961-12-29 Improvements in or relating to translucent paper

Country Status (2)

Country Link
DE (1) DE1214989B (en)
GB (1) GB1036572A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137046A (en) * 1975-10-07 1979-01-30 Mitsubishi Paper Mills, Ltd. Transparent cellulosic paper and method for making the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190956A (en) * 1982-04-30 1983-11-08 Ricoh Co Ltd Intermediate original paper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137046A (en) * 1975-10-07 1979-01-30 Mitsubishi Paper Mills, Ltd. Transparent cellulosic paper and method for making the same

Also Published As

Publication number Publication date
DE1214989B (en) 1966-04-21

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