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
  • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
  • C08K5/0066—Flame-proofing or flame-retarding additives
• • 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
  • C08K7/00—Use of ingredients characterised by shape
  • C08K7/02—Fibres or whiskers
  • C08K7/04—Fibres or whiskers inorganic
• • 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
  • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
  • C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
  • C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms

Definitions

• Polymethylpentene also known as PMP, has long been known in the art. Although many methods are known in the art for improving the performance
• compositions like polyethylene and polypropylene these same methods tend not to work in the higher alpha olefins, like PMP.
• great emphasis has been placed upon modifying the PMP polymer structure in order to improve the performance
• composition of matter which comprises (A) about 99.5 to about 75 weight percent of unmodified polymethylpentene where the weight percent of
• polymethylpentene is based on the total weight of A and B; and (B) about 0.5 to about 25 weight percent of polyphenylene sulfide where the weight percent of polyphenylene sulfide is based on the total weight of A, and B; (C) about 10 to about 67 weight percent of a reinforcer where the weight percent of the reinforcer is based on the total weight of A, B, C, and D; (D) optionally about 5 to about 45 weight percent of a flame retardant where the weight percent of the flame retardant is based on the total weight A, B, C and D.
• the polymethylpentene utilized in the present invention is a homopolymer or a copolymer of a methyl-branched pentene, preferably 4-methyl-1-pentene, and another alpha olefin.
• applicable comonomers have from about 2 to about 18 carbon atoms and
• the comonomer or comonomers are linear alpha-olefins. Longer chain linear alpha-olefins are preferred in that they are easier to copolymerize with polymethylpentene and can, in part, increase clarity, stability, and impact strength to the resulting
• composition exemplary comonomers include, but are not limited to, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, and other higher alpha-olefins.
• the amount of polymethylpentene to utilize in this invention is from about 75 weight percent to about 99.5 weight percent. More preferably, it is from about 91 weight percent to about 99 weight percent and most preferably it is from about 92 weight percent to about 98 weight percent, based on the total weight of PMP and PPS.
• Other additives, which do not interfere with the compositions at hand, such as stabilizers, corrosion inhibitors, and colorants, etc., can be added to the PMP composition to provide additional desired
• the weight of PMP used in the calculations of the weight percents in this specification is equal to the weight of PMP plus the weight of the additives.
• the PMP polymer structure is unmodified. By the term “unmodified” it is meant that the polymer has no grafting agents acting upon it in order to modify its polymer matrix.
• polyphenylene sulfides utilized in the present invention are well known in the art and are described in U.S. Patents 3,354,129; 3,396,110;
• the polyphenylene sulfide useful in accordance with this invention preferably has a melt flow, when tested in accordance with ASTM D-1238 at 315oC. using a 5 kilogram weight, of 1 to about 2,500 grams per 10 minutes.
• the reinforcing agents usable in the present invention include, for example, glass fiber, carbon fiber, boron fiber, and other inorganic substances, etc.
• Glass fiber reinforcements are available in a variety of compositions, filament diameters, sizings, and forms.
• the most commonly used composition for reinforced thermoplastics is E Glass, a
• the diameter of the glass fiber is preferably less than 20 micrometers, but may vary from about 3 to about 30 micrometers. Glass fiber diameters are usually given a letter designation between A and Z. The most common diameters encountered in glass
• the glass fiber products are usually sized during the fiber formation process or in a post
• Sizing compositions usually contain a lubricant, which provides protection for the glass fiber strand; a film former or binder that gives the glass fiber strand integrity and workability; and a coupling agent that provides better adhesion between the glass fiber strand and the polymeric materials that are reinforced with the glass fiber strand.
• Additional agents that may be used in sizing compositions include emulsifiers, wetting agents, nucleating agents, and the like.
• the amount of sizing on the glass fiber product typically ranges from about 0.2 to 1.5 weight percent based on the weight of the glass, although loadings up to 10 percent may be added to mat products.
• film formers include polyesters, epoxy resins, polyurethanes, polyacrylates, polyvinyl acetates, polyvinyl alcohols, starchs, and the like.
• the coupling agent is a silane coupling agent that has a hydrolyzable moiety for bonding to the glass and a reactive organic moiety that is compatible with the polymeric material that is to be reinforced with the glass fibers.
• chlorinated or brominated polyethylene, polypropylene, polystyrene, and polycarbonates; brominated or
• the amount of flame retardant used is between about 5 weight percent to about 45 weight percent based on the weight of PMP, PPS, reinforcer, and flame retardant. More preferably, the amount used is between about 10 weight percent to about 40 weight percent, and most preferably is from about 15 to about 36 weight percent.
• the pelletized compositions were molded into ASTM test samples on a Engel Model EC88 injection molding machine with a 55 ton clamp force.
• the PMP/PPS blends were molded with a 136oC. mold temperature, 280- 295oC. barrel temperature and 30 second cycle time.
• the PP/PPS blends were molded with a 90oC. mold
• PP represents polypropylene
• PBT represents polybutylene terephthaiate
• PET represents polyethylene terephthalate
• K-filament nominal diameter is 13 ⁇ m.
• 3LOI is the nominal ignition loss of the product. This is the percent organic solids of the sizing package.
• This example shows the properties of injection molded samples prepared from PMP/PPS molding compositions containing different grades of PPS at the 5 weight percent PPS level.
• the different grades of PPS are identified in Table EM. Results are summarized in Table IV.
• This example shows the properties of injection molded samples prepared from 30% glass reinforced PMP/PPS molding compositions containing six different types of glass reinforcement.
• the different types of glass reinforcements are identified in Table EM.
• the polyphenylene sulfide was Grade B at the 5 weight percent level. The results are summarized in Table V.
• the weight ratio of the flame retardant to the antimony oxide synergist in each formulation was 3:1.
• the samples, in each of the following examples, were tested according to ANSI/UL94 Standard for tests for flamability of plastic materials for parts and devices and appliances.
• the speciman thickness was 1/8 of an inch. In these UL94 tests a result of V-0 is better than a V-1 and both of these results are better than a fail.
• This example describes flame retarded glass reinforced PMP molding compositions containing 2.5 to 10 weight percent PPS and 18 to 27 weight percent of decabromodiphenyloxide, a commercial flame retardant available as DE-83R from Great Lakes Chemical Corporation.
• Table VIIA shows the properties of injection molded samples prepared from compositions containing 18 weight percent DE-83R and 0, 2.5, 5 and 10 weight percent PPS.
• Table VIIB shows the properties of injection molded samples prepared from compositions containing 22.5 weight percent DE-83R and 0, 2.5, 5 and 10 weight percent PPS.
• Table VIIC shows the properties of injection molded samples prepared from compositions containing 27 weight percent DE-83R and 0, 2.5, 5 and 10 weight percent PPS.
• LOI limiting oxygen index
• the PPS enhanced both the flame retardancy to the point of being self-extinguishing and the physical properties of the injection molded samples.
• Notched Izod Impact (ft-lb/in) 0.5 0.8 0.5 0.4 0.5 Unnotched Impact (ft-lb/in) 0.9 2.2 1.0 0.9 0.9
• This example describes flame retardant glass reinforced PMP molding compositions containing 2.5 to 10 weight percent PPS and 18 to 27 weight percent of brominated polystyrene, a commercial flame retardant available as Pyro-Chek 68PB (68% bromine) from Ferro Corporation.
• Table VIIIA shows the properties of injection molded samples prepared from compositions containing 18 weight percent Pyro-Chek 68PB ⁇ md 0, 2.5, 5 and 10 weight percent PPS.
• Table VIIIB shows the properties of injection molded samples prepared from compositions containing 22.5 weight percent Pyro-Chek 68PB and 0, 2.5, 5 and 10 weight percent PPS.
• Table VIIIC shows the properties of injection molded samples prepared from compositions containing 27 weight percent Pyro-Chek 68PB and 0, 2.5, 5 and 10 weight percent PPS .
• This example describes a flame retarded reinforced PMP molding composition containing 10 weight percent PPS and 22.5 weight percent of a polydibromophenylene oxide, a commercial flame
• PO-64P represents polydibromophenylene oxide (64% Br) available from Great Lakes Chemical Corporation.
• This example describes flame retarded glass reinforced PMP molding compositions containing 5 and 10 weight percent PPS and 22.5 weight percent of a tetrabromobisphenol A carbonate oligomer, a commercial flame retardant available as BC-58 from Great Lakes Chemical Corporation.
• Table X shows the properties of injection molded samples.
• Notched Izod Inpact (ft-lb/in) 0.4 0.6 0.6 0.5 0.8
• BC-58 represents tetrabromobisphenol A carbonate oligomer (58% Br), available from Great Lakes Chemical Corporation.

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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)

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• 1992
  • 1992-03-19 WO PCT/US1992/002209 patent/WO1992016586A1/en not_active Application Discontinuation
  • 1992-03-19 JP JP4508356A patent/JPH06507431A/ja active Pending
  • 1992-03-19 CA CA002105082A patent/CA2105082A1/en not_active Abandoned
  • 1992-03-19 EP EP92908871A patent/EP0576573A4/de not_active Withdrawn

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