BR0004068A - Technique for stabilizing tin-coupled elastomers - Google Patents

Technique for stabilizing tin-coupled elastomers

Info

Publication number
BR0004068A
BR0004068A BR0004068A BR0004068A BR0004068A BR 0004068 A BR0004068 A BR 0004068A BR 0004068 A BR0004068 A BR 0004068A BR 0004068 A BR0004068 A BR 0004068A BR 0004068 A BR0004068 A BR 0004068A
Authority
BR
Brazil
Prior art keywords
tin
flexible
coupled
polymer
styrene
Prior art date
Application number
BR0004068A
Other languages
Portuguese (pt)
Inventor
Wen-Liang Hsu
Adel Farhan Halasa
Edward Lee Johnson
Steven Kristofer Henning
Original Assignee
Goodyear Tire & Rubber
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 Goodyear Tire & Rubber filed Critical Goodyear Tire & Rubber
Publication of BR0004068A publication Critical patent/BR0004068A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C19/00—Chemical modification of rubber
    • C08C19/30—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule
    • C08C19/42—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups
    • C08C19/44—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
    • C08F297/02—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type
    • C08F297/04—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising vinyl aromatic monomers and conjugated dienes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

"TéCNICA PARA ESTABILIZAR ELASTÈMEROS ACOPLADOS A ESTANHO" O processo desta invenção pode ser utilizado para estabilizar os polímeros flexíveis acoplados a estanho. é especificamento útil para estabilização dos polímeros flexíveis que não contém estireno ligado. Esta invenção mais especificamente revela um processo para aperfeiçoar a estabilidade de um polímero flexível acoplado a estanho que compreende (1) adição de 0,1 phr a cerca de 4 phr de estireno a um polímero flexível existente parta produzir um polímero flexível capeado por estireno, (2) adição de um haleto de estanho ao polímero flexível existente capeado por estireno para produzir o polímero flexível acoplado a estanho e (3) opcionalmente, adição de uma alquila quelante terciária 1,2 - etileno diamina ou um sal metálico de um álcool cíclico ao polímero flexível acoplado a estanho. O uso de sais metálicos de álcoois cíclicos é preferido porque ele não conduz à combinação de corrente de reciclo. Isto é porque os álcoois cíclicos não co-destilam com hexano ou formam compostos durante divisão por vapor que co-destilam com hexano. Em outras palavras, os pontos de ebulição destes sais metálicos de álcoois cíclicos são muito altos, de modo que eles não co-destilam com hexano e contaminam as correntes de reciclo. Adicionalmente, sais metálicos de álcoois cíclicos são considerados como sendo ambientalmente seguros. De fato, mentolato de sódio é usado como um aditivo alimentar."TECHNIQUE FOR STABILIZING TIN-COUPLED ELASTOMERS" The process of this invention can be used to stabilize flexible tin-coupled polymers. is a useful specification for stabilization of flexible polymers that do not contain bound styrene. This invention more specifically discloses a process for improving the stability of a flexible tin-coupled polymer comprising (1) adding 0.1 phr to about 4 phr of styrene to an existing flexible polymer to produce a flexible styrene-capped polymer, (2) adding a tin halide to the existing flexible polymer capped by styrene to produce the flexible polymer coupled to tin and (3) optionally adding a tertiary chelating alkyl 1,2 - ethylene diamine or a metal salt of a cyclic alcohol to the flexible polymer coupled to tin. The use of metal salts of cyclic alcohols is preferred because it does not lead to a combination of recycle current. This is because cyclic alcohols do not co-distill with hexane or form compounds during steam division that co-distill with hexane. In other words, the boiling points of these metal salts of cyclic alcohols are very high, so that they do not co-distill with hexane and contaminate the recycling streams. In addition, metal salts of cyclic alcohols are considered to be environmentally safe. In fact, sodium mentholate is used as a food additive.

BR0004068A 1999-09-17 2000-09-08 Technique for stabilizing tin-coupled elastomers BR0004068A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15473599P 1999-09-17 1999-09-17

Publications (1)

Publication Number Publication Date
BR0004068A true BR0004068A (en) 2001-04-17

Family

ID=22552554

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0004068A BR0004068A (en) 1999-09-17 2000-09-08 Technique for stabilizing tin-coupled elastomers

Country Status (2)

Country Link
BR (1) BR0004068A (en)
GB (1) GB2354244B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4526934A (en) * 1982-03-19 1985-07-02 Bridgestone Tire Company Limited Branched styrene-butadiene copolymers and pneumatic tires using the same
JPH0662727B2 (en) * 1984-08-27 1994-08-17 日本合成ゴム株式会社 Rubber composition
US4946899A (en) * 1988-12-16 1990-08-07 The University Of Akron Thermoplastic elastomers of isobutylene and process of preparation

Also Published As

Publication number Publication date
GB2354244A (en) 2001-03-21
GB0022722D0 (en) 2000-11-01
GB2354244B (en) 2004-01-14

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Legal Events

Date Code Title Description
B08F Application fees: dismissal - article 86 of industrial property law

Free format text: REFERENTE A 8A ANUIDADE.

B08K Maintenance of archiving: application remains archived as no request for restauration (art. 87) has been received.

Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1971 DE 14/10/2008.