UST861031I4 - Defensive publication - Google Patents

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Publication number
UST861031I4
UST861031I4 US861031DH UST861031I4 US T861031 I4 UST861031 I4 US T861031I4 US 861031D H US861031D H US 861031DH US T861031 I4 UST861031 I4 US T861031I4
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United States
Prior art keywords
defensive publication
borane
defensive
published
polymer
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Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08CTREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C19/00Chemical modification of rubber
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00Chemical modification by after-treatment
    • C08F8/42Introducing metal atoms or metal-containing groups

Definitions

  • Ethylenically unsaturated, elastomeric, sulfur curable hydrocarbon polymers are reacted in bulk (optionally containing 150 parts per 100 parts of petroleum oil) or solution at room temperature to 250 0., preferably 50-225 C., with boranes EH B H or RBH (R is C C alkyl, aryl, or substituted aryl, to reduce the cold flow of the elastomer while maintaining sulfur-curability and not effecting significant gelation.
  • the borane supplies about 0.002 to 0.1 gramatoms of B per kilogram of polymer.
  • Trioctylamine borane is representative.
  • the borane can be supplied as a solution in petrolatum, decalin, or high boiling oil (preferably less than 10% by Weight of the polymer). If the polymer is treated in an extruder, the extrudate should be cooled in a protective atmosphere.
  • the treated polymers can be returned partly or Wholly to their original state by mixing them with 1-5 moles of a carboxylic acid, e.g., stearic acid, per gram-atom of B. ZnO or CdO will prevent this change if added ahead of the acid.
  • a carboxylic acid e.g., stearic acid

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

DEFENSIVE PUBLICATIONT UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Apr. 11, 1968, 849 0.G. 1221. Identification is by serial number of the application and the heading indicates the number of pages of specification, including claims. and of sheets of drawing contained in the application as originally filed. The file of this application is available to the public for inspection; reproduction may be purchased for 30 cents per sheet.
Applications published under the Defensive Publication Program have not been examined as to the merits of alleged invention. The Patent Ofiice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED APRIL 15, 1969 743 029 ETHYLENICALLY UNSATURATED HYDRO- CARBON POLYMERS TREATED WITH BORON COMPOUNDS Anestis Leonidas Logothetis, Wilmington, Del., assignor to E. I. du Pont de Nemours and Company, Wilmington, Del., a corporation of Delaware Filed July 8, 1968. Published Apr. 15, 1969 Class 260-8058 No Drawing. 16 Pages Specification Ethylenically unsaturated, elastomeric, sulfur curable hydrocarbon polymers, particularly copolymers of at least one lalpha-monoolefin and at least one non-conjugated diene, are reacted in bulk (optionally containing 150 parts per 100 parts of petroleum oil) or solution at room temperature to 250 0., preferably 50-225 C., with boranes EH B H or RBH (R is C C alkyl, aryl, or substituted aryl, to reduce the cold flow of the elastomer while maintaining sulfur-curability and not effecting significant gelation. The borane supplies about 0.002 to 0.1 gramatoms of B per kilogram of polymer. The borane can be derived from complexes with ethers, ammonia, amines (R' NH phosphines (R' P), and arsines (R' As) where R is H, C -C alkyl, cycloalkyl, aryl, alkaryl, pyridyl, furyl, and thienyl, n=03, m=dn. Trioctylamine borane is representative. Optionally, the borane can be supplied as a solution in petrolatum, decalin, or high boiling oil (preferably less than 10% by Weight of the polymer). If the polymer is treated in an extruder, the extrudate should be cooled in a protective atmosphere.
The treated polymers can be returned partly or Wholly to their original state by mixing them with 1-5 moles of a carboxylic acid, e.g., stearic acid, per gram-atom of B. ZnO or CdO will prevent this change if added ahead of the acid.
US861031D 1968-07-08 1968-07-08 Defensive publication Pending UST861031I4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74302968A 1968-07-08 1968-07-08

Publications (1)

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UST861031I4 true UST861031I4 (en) 1969-04-15

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US861031D Pending UST861031I4 (en) 1968-07-08 1968-07-08 Defensive publication

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5741870A (en) * 1993-03-15 1998-04-21 Kuraray Co., Ltd. Resin composition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5741870A (en) * 1993-03-15 1998-04-21 Kuraray Co., Ltd. Resin composition

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