GB397909A - An improved process for making resinous products by condensing aldehydes with other compounds such as urea or phenol - Google Patents

An improved process for making resinous products by condensing aldehydes with other compounds such as urea or phenol

Info

Publication number
GB397909A
GB397909A GB635132A GB635132A GB397909A GB 397909 A GB397909 A GB 397909A GB 635132 A GB635132 A GB 635132A GB 635132 A GB635132 A GB 635132A GB 397909 A GB397909 A GB 397909A
Authority
GB
United Kingdom
Prior art keywords
condensation products
urea
phenol
water
reaction mixture
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
GB635132A
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.)
ISIDOR FEINMANN
Original Assignee
ISIDOR FEINMANN
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 ISIDOR FEINMANN filed Critical ISIDOR FEINMANN
Priority to GB635132A priority Critical patent/GB397909A/en
Publication of GB397909A publication Critical patent/GB397909A/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
    • C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • C08G12/043—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with at least two compounds covered by more than one of the groups C08G12/06 - C08G12/24
    • C08G12/046—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with at least two compounds covered by more than one of the groups C08G12/06 - C08G12/24 one being urea or thiourea
    • 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
    • C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
    • C08G8/28—Chemically modified polycondensates

Landscapes

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

Abstract

In the manufacture of synthetic resins by condensing aldehydes with other compounds such as urea or phenol, in the presence or absence of an acid, basic or neutral catalyst, the reaction product is fractionated by treatment with water into portions having different affinities for water, and the separated fractions are compounded in any desired proportions to produce the final product. In the preferred procedure, an experimental determination is made of the minimum amount of distilled water which must be added to the hot reaction mixture to effect separation into two layers when the mixture is cooled to 15 DEG C. After adding that amount of water and cooling the mixture, the lower layer comprising the highest condensation products only is separated, and the aqueous upper layer is further diluted. Further separation then occurs, with the precipitation of middle condensation products. The aqueous residue comprises the lowest condensation products, together with unchanged starting material and condensing agent. An example is given in which urea and formaldehyde are condensed in known manner and the reaction mixture is treated as described above; by compounding the fractions in specified proportions a product of improved properties is obtained. An example is given also in which phenol and formaldehyde are condensed in the presence of soda, the reaction mixture is treated as described above, and the highest and middle condensation products are mixed together, the aqueous residue being rejected.
GB635132A 1932-03-02 1932-03-02 An improved process for making resinous products by condensing aldehydes with other compounds such as urea or phenol Expired GB397909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB635132A GB397909A (en) 1932-03-02 1932-03-02 An improved process for making resinous products by condensing aldehydes with other compounds such as urea or phenol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB635132A GB397909A (en) 1932-03-02 1932-03-02 An improved process for making resinous products by condensing aldehydes with other compounds such as urea or phenol

Publications (1)

Publication Number Publication Date
GB397909A true GB397909A (en) 1933-09-04

Family

ID=9812895

Family Applications (1)

Application Number Title Priority Date Filing Date
GB635132A Expired GB397909A (en) 1932-03-02 1932-03-02 An improved process for making resinous products by condensing aldehydes with other compounds such as urea or phenol

Country Status (1)

Country Link
GB (1) GB397909A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473920A (en) * 1944-07-19 1949-06-21 Du Pont Fractionation of linear polyamides and products obtained thereby
US2757086A (en) * 1950-08-19 1956-07-31 Brown Co Method of wet-strengthening paper with high molecular weight ureaformaldehyde resins
US2786825A (en) * 1953-10-12 1957-03-26 Hercules Powder Co Ltd Process for the preparation of cationic polyalkylene modified urea-formaldehyde resins

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473920A (en) * 1944-07-19 1949-06-21 Du Pont Fractionation of linear polyamides and products obtained thereby
US2757086A (en) * 1950-08-19 1956-07-31 Brown Co Method of wet-strengthening paper with high molecular weight ureaformaldehyde resins
US2786825A (en) * 1953-10-12 1957-03-26 Hercules Powder Co Ltd Process for the preparation of cationic polyalkylene modified urea-formaldehyde resins

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