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
  • C08K3/00—Use of inorganic substances as compounding ingredients
  • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
  • C08K3/20—Oxides; Hydroxides
  • C08K3/22—Oxides; Hydroxides of metals
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L101/00—Compositions of unspecified macromolecular compounds
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L73/00—Compositions of macromolecular compounds obtained by reactions forming a linkage containing oxygen or oxygen and carbon in the main chain, not provided for in groups C08L59/00 - C08L71/00; Compositions of derivatives of such polymers
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers

Definitions

• the ethylene/carbon monoxide copolymers include those which have other copolymerizable monomers contained in the polymer, such as acrylic acid, methacrylic acid, vinyl alkylates, alkyl acrylates, and even minor amounts of lower olefins, such as propylene or butylene.
• Patents showing the preferred method of making CO-containing ethylene copolymers include U.S. Patent 4,600,614 and U.S. Patent 4,601,948.
• n is a plural number
• R' is hydrogen or alkyl group
• the photodegradation properties of olefin polymers which contain carbonyl groups along the chain are disclosed in U.S. Patent 3*676,401 and U.S. Patent 3,860,538.
• HM88143 for a degradable polyethylene based white concentrate trademarked SPECTRATECHTM HM88143 by Quantum Chemical Corporation and described as 50 blend of polyethylene modified to be degradable and 50 of titanium dioxide (CAS RN: 13463-67-1); this Chemical Abstracts Service Registry Number is generic to Ti ⁇ 2-
• Ti ⁇ 2 will accelerate the photodegradation of polyethylene and polypropylene.
• the rutile form of Ti ⁇ 2 is relatively inactive with respect to the photodegradation of polymers to which it may be added, but it may be employed for other purposes, such as for pigmentation or thermal activity.
• the term "polymers or copolymers” refers herein to portions of the photodegradating agents, and which are also useful in enhancing the photodegradation of the matrix resins.
• a second aspect of the invention is a process of synergistically enhancing the photodegradation rate of photodegradation polymers containing carbonyl groups along the polymer chain; the said process comprising incorporating the anatase form of Ti ⁇ 2 therein.
• copolymer containing copolymerized carbon monoxide (CO) in the polymer chain backbone is the preferred type of CO-containing polymer.
• a process of providing a predetermined regulated rate of photodegradation to a matrix resin comprising blending the matrix resin with predetermined amounts of anatase Ti ⁇ 2, at least one CO- containing polymer and optionally rutile Ti ⁇ 2 > and/or a UV stabilizer.
• additives and/or degradation accelerators and/or photostabilizers and/or photosensitizers may also be employed along with the agent of this invention either by way of having the photodegradation agent added to matrix resins which contain the said optional ingredients, or by way of adding the optional additives to matrix resins which contain the photodegradation agents, or by adding them to the matrix resin at substantially the same time.
• the effect of the CO- containing polymer is not very likely to provide an appreciably significant effect on the photodegradation of the resin.
• the polymer which contains the CO groups may not exhibit the physical properties needed for attaining the initial strength or other properties desired in the resin article of which it is to be a part.
• a preferred range is 1 percent to 30 percent by weight, more preferably 2 percent to 20 percent by weight.
• LLDPE linear low density polyethylene which is actually an ethylene/1-alkene copol ⁇ mer prepared by using a coordination catalyst, such as a Ziegler catalyst or the like.
• MFR melt flow rate
• MI melt index
• LLDPE-1 Ethylene/octene copolymer, density of 0.941 g/cc and MFR of 4 g/10 min.
• Ti ⁇ 2 Titanium oxide indicated as the anatase crystal form or the rutile crystal form, or in some instances it can be either one. Unless indicated otherwise, the Ti ⁇ 2 used is pigment grade Ti ⁇ 2 (particularly that available as Mobay ® Type A-X).
• Example 2 In similar manner to Example 1, a composite blend is prepared consisting of 9.9 parts of LLDPE-1, 0.3 parts of LLDPE-2, 4.2 parts of ECO-2 and 0.6 parts
• Example 2 In similar manner to Example 1, a composite blend is prepared consisting of 9.9 parts of LLDPE-1, 4.5 parts of LDPE-1 and 0.6 parts of Concentrate #4. The composite is tested by outside weathering and the
• the range of about 1/99 to about 99/1 is believed to be operable, preferably about 40/60 to about 90/10, most preferably about 50/50 to about 80/20.
• Ti ⁇ 2 acidic surface
• ECO basic carbonyl
• Ti ⁇ 2 can be either anatase or rutile or any variety having an acid surface.
• Other particulate solid compounds having acid surfaces may be employed in place of, or along with, the Ti02 and the CO-containing olefin polymer.

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• 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)
• Manufacture Of Macromolecular Shaped Articles (AREA)

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Cited By (10)

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Citations (4)

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• 1990
  • 1990-06-21 AU AU61481/90A patent/AU6148190A/en not_active Abandoned
  • 1990-06-21 JP JP51097790A patent/JPH04504734A/ja active Pending
  • 1990-06-21 EP EP19900911424 patent/EP0486524A4/en not_active Withdrawn
  • 1990-06-21 WO PCT/US1990/003540 patent/WO1991018944A1/en not_active Application Discontinuation

Patent Citations (4)

Non-Patent Citations (1)

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