GB571662A - Stabilization of polyvinyl acetal - Google Patents

Stabilization of polyvinyl acetal

Info

Publication number
GB571662A
GB571662A GB7510/43A GB751043A GB571662A GB 571662 A GB571662 A GB 571662A GB 7510/43 A GB7510/43 A GB 7510/43A GB 751043 A GB751043 A GB 751043A GB 571662 A GB571662 A GB 571662A
Authority
GB
United Kingdom
Prior art keywords
stabilization
urea
polyvinyl acetal
methyl
thioureas
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
GB7510/43A
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.)
Wingfoot Corp
Original Assignee
Wingfoot Corp
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 Wingfoot Corp filed Critical Wingfoot Corp
Publication of GB571662A publication Critical patent/GB571662A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/21—Urea; Derivatives thereof, e.g. biuret

Abstract

Polyvinyl acetals are heat-stabilized by incorporating therein a small amount of urea, thiourea or alkyl or aryl ureas or thioureas. Specified stabilizers are urea; methyl, tetramethyl, tetraethyl, N-N1-dibutyl, monophenyl, p-phenetyl and N-N1-dimethyl-N-N1-diphenyl ureas; and allyl, methyl and diethyl thioureas. Colourless films are made by deposition of the stabilized resin from alcoholic solution.
GB7510/43A 1942-12-29 1943-05-11 Stabilization of polyvinyl acetal Expired GB571662A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US571662XA 1942-12-29 1942-12-29

Publications (1)

Publication Number Publication Date
GB571662A true GB571662A (en) 1945-09-04

Family

ID=22008902

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7510/43A Expired GB571662A (en) 1942-12-29 1943-05-11 Stabilization of polyvinyl acetal

Country Status (2)

Country Link
FR (1) FR915756A (en)
GB (1) GB571662A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2555167A (en) * 1948-08-11 1951-05-29 Shell Dev Stabilized compositions containing high molecular weight halogenated materials
US2788338A (en) * 1953-02-09 1957-04-09 Monsanto Chemicals Urea type rubber anti-exposure cracking agents
US2945838A (en) * 1960-07-19 Amide stabilized organopolysiloxane

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2945838A (en) * 1960-07-19 Amide stabilized organopolysiloxane
US2555167A (en) * 1948-08-11 1951-05-29 Shell Dev Stabilized compositions containing high molecular weight halogenated materials
US2788338A (en) * 1953-02-09 1957-04-09 Monsanto Chemicals Urea type rubber anti-exposure cracking agents

Also Published As

Publication number Publication date
FR915756A (en) 1946-11-18

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