GB551127A - Method of producing laminated materials - Google Patents

Method of producing laminated materials

Info

Publication number
GB551127A
GB551127A GB10500/41A GB1050041A GB551127A GB 551127 A GB551127 A GB 551127A GB 10500/41 A GB10500/41 A GB 10500/41A GB 1050041 A GB1050041 A GB 1050041A GB 551127 A GB551127 A GB 551127A
Authority
GB
United Kingdom
Prior art keywords
urea
formaldehyde
solution
melamine
fabric
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
GB10500/41A
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 GB551127A publication Critical patent/GB551127A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J1/00—Fibreboard
    • D21J1/16—Special fibreboard

Landscapes

  • Laminated Bodies (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

551,127. Compound sheet materials ; aminoplast synthetic resins. AMERICAN CYANAMID CO. Aug. 18, 1941, No. 10500. Convention date, Aug. 17, 1940. [Class 2 (iii)] [Also in Group VIII] Laminating materials are made by subjecting to heat and pressure superposed layers of fibrous material, e.g. fabric, paper or felt and glass fabric all impregnated with an aminoplast resin. The glass fabric may be woven, knitted, felted or braided and includes thin formaminous glass sheets. Suitable resins are urea- or-thiourea-formaldehyde, dicyandiamideformaldehyde, melamine-formaldehyde condensation products. A suitable melamine modified dicyandiamide formaldehyde resin is made as described in Specification 549,705. A mixed melamine-urea-formaldehyde resin is made by heating a solution of melamine in aqueous formaldehyde at 65‹C. adding urea and continuing heating to form a clear stable syrup. A urea-thiourea formaldehyde resin syrup is made by refluxing a solution of thiourea in aqueous formaldehyde, adding a solution of triethylamine and urea and heating at 40‹C. and finally adding a solution of salicylic acid as a latent hardening catalyst. The Specification as open to inspection under Sect. 91 comprises also the use as a moulding composition of disintegrated impregnated glass cloth alone or associated with impregnated paper or fabric. This subject-matter does not appear in the Specification as accepted.
GB10500/41A 1940-08-17 1941-08-18 Method of producing laminated materials Expired GB551127A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US551127XA 1940-08-17 1940-08-17

Publications (1)

Publication Number Publication Date
GB551127A true GB551127A (en) 1943-02-09

Family

ID=21995695

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10500/41A Expired GB551127A (en) 1940-08-17 1941-08-18 Method of producing laminated materials

Country Status (1)

Country Link
GB (1) GB551127A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653090A (en) * 1948-05-13 1953-09-22 Mosinee Paper Mills Company Glass strand reinforced paper
DE2439152A1 (en) * 1973-08-15 1975-02-27 Westinghouse Electric Corp HIGH PRESSURE LAMINATE
DE4407620A1 (en) * 1993-11-13 1995-05-18 Roemmler H Resopal Werk Gmbh Laminated sheet

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653090A (en) * 1948-05-13 1953-09-22 Mosinee Paper Mills Company Glass strand reinforced paper
DE2439152A1 (en) * 1973-08-15 1975-02-27 Westinghouse Electric Corp HIGH PRESSURE LAMINATE
DE4407620A1 (en) * 1993-11-13 1995-05-18 Roemmler H Resopal Werk Gmbh Laminated sheet

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