Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D121/00—Coating compositions based on unspecified rubbers
  • C09D121/02—Latex
• • 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
  • C08F8/00—Chemical modification by after-treatment
  • C08F8/18—Introducing halogen atoms or halogen-containing groups
  • C08F8/20—Halogenation
• • 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
  • C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
  • C08F212/02—Monomers containing only one unsaturated aliphatic radical
  • C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
  • C08F212/14—Monomers containing only one unsaturated aliphatic radical containing one ring substituted by heteroatoms or groups containing heteroatoms
  • C08F212/16—Halogens
  • C08F212/21—Bromine

Definitions

• This invention relates to halogenated styrene-based polymers and the preparation thereof, and particularly to compositions such as dibromostyrene-butadiene and
• Styrene based copolymers and terpolymers have found many applications in the prior art.
• Styrene-butadiene rubbers (SBR) containing low styrene proportions (15-35%) have been used for many applications, including tires, retreading, belting, footwear, wire and cable coating, sponge rubber, pressure-sensitive tape, reinforcement plastics and
• Styrene-butadiene latices containing varying amounts of styrene (15-65%) have been used in fabric-to-rubber
• these flame retardants may be any flame retardants released.
• these flame retardants may be any flame retardants released.
• bromine-containing flame retardants for the most part they also have the disadvantage of adversely influencing the mechanical properties of the plastics.
• dibromostyrene-styrene-butadiene was discussed. Mackay did disclose that a small amount of styrene could be used along with the above prescribed monomers in the copolymer, and indicated in one example that 2,4-dibromostyrene as a monomer was used to prepare a carboxylic latex containing acrylic acid, dibromostyrene and 1,3-butadiene.
• flame retardant copolymers comprising ring-halogenated, ethylenically unsaturated aromatic monomers and aliphatic conjugated dienes having from 4 to 10 carbon atoms.
• Copolymers according to the present invention include compositions represented by the formula:
• n is an integer
• R is H or CHstay ;
• R is H or a C 1-4 lower alkyl group;
• R 3 is H, Cl or CH 3 ; and
• x 1 to 4.
• Terpolymers according to the present invention include compositions represented by the formula:
• n is an integer
• R is H or CH 3
• R 2 is H or a C 1-4 lower alkyl group
• R 3 is H, Cl or CH 3
• x 1 to 4
• copolymers and terpolymers of the present invention have a molecular weight of at least about 25,000.
• the molecular weight is at least about 100,000.
• a further object of the present invention is to provide polymers utilizing ring-halogenated aromatic monomers in partial or total substitution for non-halogenated aromatic monomers used in prior art compositions.
• Another object of the present invention is to provide polymers such as dibromostyrene-butadiene and dibromostyrenestyrene-butadiene latices and their respective coagulated polymers, crosslinked and non-crosslinked.
• the present invention provides styrene based compositions having improved flame retardancy.
• styrene-butadiene rubbers, styrene-butadiene resins and styrene-butadiene latices imparts fire retardancy and
• thermoplastic resins such as high impact polystyrene, polyvinyl chloride,
• polypropylene, ABS, and other thermoplastic and thermosetting resins are useful as fire retardant fabric backcoatings, coatings, paints and adhesives.
• flame retardant copolymer compositions comprising units from ring-halogenated
• flame retardant terpolymers comprising units from ring-halogenated, ethylenically unsaturated aromatic monomers, units from halogen-free aromatic monomers, and units from aliphatic conjugated dienes having from 4 to 10 carbon atoms.
• ring-halogenated monomers of both the copolymers and terpolymers are used in partial or total replacement of comparable non-halogenated monomers used in prior art compositions.
• Representative ring-halogenated aromatic monomers are mono-, di-, tri- and tetrabromo- forms of styrene, methylstyrene, ⁇ -methylstyrene, ⁇ -methyl
• the preferred monomer is polybrominated styrene, with dibromostyrene being most preferred. As produced by Great Lakes Chemical Corporation, dibromostyrene normally contains about 15 percent monobromostyrene and 3 percent
• the ring halogen may be either chlorine or bromine, and is preferably bromine.
• the ring-halogenated aromatic monomers are included in an amount to provide between about 10 and about 60 percent of bromine by weight based on the total weight of the copolymer or terpolymer, respectively.
• the conjugated diene monomers for both the copolymers and terpolymers preferably have from 4 to 10 carbon atoms, and may be of the type used in related prior art compositions. Representative of the conjugated diene monomers are
• chloroprene piperylene and other hydrocarbon homologs of 1,3-butadiene.
• the preferred monomer is butadiene,
• chloroprene or isoprene particularly butadiene.
• copolymers of the ring-halogenated aromatic monomers and the conjugated diene monomers are provided.
• the ring-halogenated aromatic monomers are provided.
• the conjugated diene monomers are provided.
• ring-halogenated aromatic monomer is used in an amount to provide from about 95 to about 5 percent by weight of the monomer based on total weight of the copolymer.
• the preferred amount of ring-halogenated aromatic monomer is about 88 to about 25 percent by weight.
• the conjugated diene is used in an amount to provide from about 5 to about 95 percent by weight, preferably from about 12 to about 75 percent by weight, of the conjugated diene monomer based on total weight of the copolymer.
• Copolymers according to the present invention include compositions represented by the formula:
• n is an integer;
• R 1 is H or CH 3 ;
• R 2 is H or a C 1-4 lower alkyl group;
• R 3 is H, Cl or CH 3 ; and
• x 1 to 4.
• terpolymers of halogen-free aromatic monomers as well as the ring-halogenated aromatic monomers and the conjugated diene monomers.
• Representative halogen-free aromatic monomers are styrene,
• ⁇ -methyIstyrene methylstyrene, ⁇ -methyl methylstyrene, ethylstyrene and ⁇ -methyl ethylstyrene.
• the preferred halogen-free aromatic monomer is styrene or ⁇ -methyIstyrene.
• the ring-halogenated aromatic monomer is used in an amount to provide from about 90 to about 5 percent by weight of the monomer based on total weight of the terpolymer.
• ring-halogenated aromatic monomer is about 40 to about 20 percent by weight.
• the conjugated diene is used in an amount to provide from about 90 to about 5 percent by weight, preferably from about 50 to about 12 percent by weight, of the aliphatic conjugated diene monomer based on total weight of the terpolymer.
• Terpolymers according to the present invention include compositions represented by the formula:
• n is an integer;
• R 1 is H or CH 3 ;
• R 2 is H or a C 1-4 lower alkyl group;
• R 3 is H, Cl or CH 3 ; and
• x 1 to 4.
• copolymers and terpolymers of the present invention have a molecular weight of at least about 25,000.
• the molecular weight is at least about 100,000.
• terpolymers include solution, bulk, emulsion and suspension polymerization.
• Suitable initiators include the initiators used for free radical polymerization such as organic
• Useful emulsifiers include anionic, cationic, nonionic or amphoteric.
• Chain transfer agents include aliphatic, aryl mercaptans and disulfides, CCl 4 , CBr 4 , CHO 3 and CHCl 3 , etc. Among these,
• Polymerization may be carried out in the presence of air. Faster reactions are observed in the absence of oxygen at temperatures ranging from -30° to 110°C, with preferred temperatures ranging from about 0°C to about 60°C.
• Polymerization may be terminated short of completion to yield products having selected molecular weights. For example, termination at 45-75% conversion generally yields product which is non-crosslinked latex and its coagulated polymer. Termination at 75-100% conversion generally produces product comprising crosslinked latex and its coagulated polymer.
• antioxidants include alkylated-arylated bisphenolic
• phosphite tris(nonylphenyl)phosphite, styrenated phenol, bis-(alkylthiopropionate)diesters,
• diaryl-p-phenylenediamines diaryl-p-phenylenediamines, mixed styrenated diphenylamines (Wingstay 29 from Goodyear, Akron, Ohio) and butylated reaction product of p-cresol and dicyclopentadiene, (Vanox L from Goodyear, Akron, Ohio).
• a soap solution (a mixture of 180 parts deionized water, 5 parts sodium dodecyl sulfate, 0.3 parts potassium
• the cap was sealed with rubber and TEFLON gaskets and was then tightened quickly by hand using rubber gloves.
• the bottle was placed in a clamp in a 50°C water bath and rotated. The reaction was allowed to run for a certain period of time (2 to 20.75 hr), after which the bottle was removed from the water bath and placed in
• the chilled bottle was then tested for pressure by inserting a needle through the cap. When no pressure was apparent, the bottle was opened and the contents dripped into a 6% aqueous MgSO 4 solution under stirring, followed by coagulation of this mixture by dripping into rapidly stirred methanol. The coagulated polymer was filtered, air-dried, frozen, ground and dried in a vacuum oven at 25-110°C to a constant weight. The polymers were insoluble in
• Bromine content (% Br) of the polymer was measured by Sch ⁇ ninger Combustion Method and weight loss (% loss) measured at a rate of
• Vanox L butylated reaction product of p-cresol
• a 2 1 Parr reactor was charged with a soap solution of 1014 g deionized water, 28 g sodium dodecyl sulfate, 1.87 g sodium bicarbonate, 1.87 g potassium persulfate and 1.87 g sodium bisulfite.
• soap solution 1014 g deionized water, 28 g sodium dodecyl sulfate, 1.87 g sodium bicarbonate, 1.87 g potassium persulfate and 1.87 g sodium bisulfite.
• soap solution was added a mixture of 420 g dibromostyrene and 0.98 g n-dodecyl mercaptan, followed by the addition of 140 g butadiene.
• the contents of the reactor were allowed to react for one and a half hours to 30 percent solids; the
• Example 11 The general procedure of Example 11 was repeated here to prepare a terpolymer which contained 19 weight percent of dibromostyrene, 67 weight percent of styrene and 14 weight percent of butadiene.
• the monomers were polymerized to approximately 100 percent conversion at 37 percent solids in 2.5 hr, and the temperature was gradually increased from room temperature to 65°C.
• the coagulated terpolymer was soluble in tetrahydrofuran, chloroform and toluene and had an average molecular weight of 119,000 relative to polystyrene.
• Table V The result of the preparation is tabulated in Table V.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• General Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Wood Science & Technology (AREA)
• Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
• Laminated Bodies (AREA)
• Paints Or Removers (AREA)
• Compositions Of Macromolecular Compounds (AREA)

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• 1990
  • 1990-06-20 US US07/541,057 patent/US5066752A/en not_active Expired - Lifetime
  • 1990-10-31 US US07/606,590 patent/US5100986A/en not_active Expired - Fee Related
• 1991
  • 1991-06-13 KR KR1019920703281A patent/KR930701503A/ko not_active Ceased
  • 1991-06-13 EP EP91911627A patent/EP0535077A1/en not_active Withdrawn
  • 1991-06-13 JP JP91511521A patent/JPH05508671A/ja active Pending
  • 1991-06-13 WO PCT/US1991/004239 patent/WO1991019748A1/en not_active Ceased
  • 1991-06-13 AU AU80517/91A patent/AU654282B2/en not_active Ceased
  • 1991-06-17 CA CA002044729A patent/CA2044729A1/en not_active Abandoned
  • 1991-06-18 IL IL9855191A patent/IL98551A/en active IP Right Review Request
  • 1991-06-19 TW TW080104726A patent/TW198041B/zh active
  • 1991-10-23 KR KR1019930701303A patent/KR930702457A/ko not_active Withdrawn
  • 1991-10-30 TW TW080108525A patent/TW206979B/zh active

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