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
  • C08K5/04—Oxygen-containing compounds
  • C08K5/10—Esters; Ether-esters
  • C08K5/101—Esters; Ether-esters of monocarboxylic acids
  • C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
• • 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
  • C08K5/20—Carboxylic acid amides

Definitions

• the present invention aims at an improved process for weakening the hydrophobic behavior of polymers and copolymers of alkenes.
• Another object of the invention is to provide a transparent packaging film made of such polymers.
• the process according to the invention for weakening the hydrophobic character of alkene polymers is characterized in that a polymer, or copolymer, of an alkene is mixed with (a) a 0.05-2% by weight of monester, or a diester, of a hexavalent, partly dehydrated alcohol, and an aliphatic carboxylic acid with 12-22 carbon atoms, and (b) 0.01-0.5% by weight of an amide of an aliphatic carboxylic acid with 12-22 carbon atoms.
• esters include esters of partly dehydrated hexitols, such as mannitan and sorbitan with saturated and unsaturated fatty acids, such as lauric acid, steric acid, oleic acid and erucic acid. Preference is given to the mono-esters, particularly to those of mannitan and sorbitan and a saturated fatty acid.
• Suitable carboxylic acids are both the amids of saturated and unsaturated fatty acids with 12-22 carbon atoms, such as lauric-, palmitic-, stean'c-, oleicand erucic acid-amide.
• the amide of oleic acid is particularly suitable.
• the esters are used in amounts of 0.05-2% by weight preferably 0.2-0.5 by weight, calculated to the amount of polymer. It is preferred to take the amounts of carboxylic acid amide smaller than the amount of ester, more specifically between 0.01 and 0.5% by weight, and preferably between 0.03 and 0.1% by weight, calculated to the amount of polymer.
• the process according to the invention can be used with homopolymers and copolymers of alkenes, for example polyethylene, polypropylene, poly-(4-methylpentene-1), copolymers of ethylene and propylene with one another or with some other alkene, such as butylene-l, pentylene-l, hexylene-l and octylene-l and copolymers of alkenes with other unsaturated compounds e.g. copolymers of ethylene with unstaurated esters such as vinylacetate and methylacrylate.
• alkenes for example polyethylene, polypropylene, poly-(4-methylpentene-1
• copolymers of ethylene and propylene with one another or with some other alkene such as butylene-l, pentylene-l, hexylene-l and octylene-l
• copolymers of alkenes with other unsaturated compounds e.g. copolymers of ethylene
• esters and the amides with the alkene polymers does not give any difficulties and can be done in a known manner, e.g. in mixing or kneading installations.
• the ester and the amides can be used in combination with other additives normally used with polyalkenes, e.g. dyes, fillers, antioxydants, antistatics, anti-blocking agents, such as silica and silicates, etc.
• the mixtures prepared according to the invention can by means of the procedures known in the art, be manufactured into transparent objects, eg, injection-molded articles, bottles and stretched or unstretched flat films, or blown films, having a less hydrophobic character than objects made of polyalkenes that do not contain the additives used according to the invention. Said mixtures can also be applied as film or coating on other materials, for instance on paper. The mixtures are, of course, also suited for production of non-transparent objects with a reduced hydrophobic behavior.
• 12-18 carbon atoms is sorbitanmonolaurate and the amide of an unsaturated fatty acid with 18-22 carbon atoms is oleic acid amde.

Landscapes

• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Paper (AREA)
• Manufacture Of Macromolecular Shaped Articles (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=19800721

Family Applications (1)

Country Status (10)

Cited By (1)

Families Citing this family (2)

• 1967
  • 1967-07-14 NL NL6709859A patent/NL6709859A/xx unknown
• 1968
  • 1968-07-10 GB GB32955/68A patent/GB1190542A/en not_active Expired
  • 1968-07-11 CH CH1034168A patent/CH491970A/de not_active IP Right Cessation
  • 1968-07-11 AT AT672268A patent/AT288015B/de not_active IP Right Cessation
  • 1968-07-12 DE DE19681769782 patent/DE1769782A1/de active Pending
  • 1968-07-12 FR FR1572001D patent/FR1572001A/fr not_active Expired
  • 1968-07-12 BE BE718059D patent/BE718059A/xx unknown
  • 1968-07-12 SE SE09668/68A patent/SE349312B/xx unknown
  • 1968-07-12 US US745336A patent/US3557248A/en not_active Expired - Lifetime
  • 1968-07-12 ES ES356133A patent/ES356133A1/es not_active Expired

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