Classifications

• • 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
  • C08F214/00—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 a halogen
  • C08F214/02—Monomers containing chlorine
  • C08F214/04—Monomers containing two carbon atoms
  • C08F214/06—Vinyl chloride
• • 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
  • C08F14/00—Homopolymers and 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 a halogen
  • C08F14/02—Monomers containing chlorine
  • C08F14/04—Monomers containing two carbon atoms
  • C08F14/06—Vinyl chloride
• • 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
  • C08F2/00—Processes of polymerisation
  • C08F2/12—Polymerisation in non-solvents
  • C08F2/16—Aqueous medium
  • C08F2/18—Suspension polymerisation
  • C08F2/20—Suspension polymerisation with the aid of macromolecular dispersing agents

Definitions

• the process is characterized in that with the dosing of protective colloid, preferably at least one PVAL with a degree of hydrolysis of 70 to 99.8 mol% and an average degree of polymerization of 200 to 3000, as the first dispersing agent only after a conversion of 1 to 60% by weight .-%, preferably 2 to 25 wt .-%, based on the total weight of the monomers liquid under the reaction conditions, is started.
• protective colloid preferably at least one PVAL with a degree of hydrolysis of 70 to 99.8 mol% and an average degree of polymerization of 200 to 3000
• ethylene is also used as a comonomer in a further preferred embodiment of the process according to the invention.
• the reaction vessel is charged with ethylene up to a partial pressure of 200 bar, preferably up to 80 bar, before or during the reaction.
• This loading is preferably carried out before the reaction, so that the liquid reaction mixture can dissolve part of the ethylene up to the equilibrium of the gas space with the liquid phase.
• the ethylene can be added once, or its partial pressure can last for a long time, in particular until the end of the metering of the monomers which are liquid under the reaction conditions are kept largely constant by subsequent metering.
• the protective colloid in particular the PVAL, is used in a total amount of 0.5 to 15% by weight, preferably 3 to 10% by weight, based on the monomers which are liquid under the reaction conditions. If comonomers are additionally used which are known to stabilize dispersion (e.g. vinyl sulfonate), z. B. even the addition of about 1 to 3 wt .-% protective colloid provide very good results.
• the polymerization is preferably carried out by means of so-called redox initiator systems, which generally consist of a combination of at least one peroxidic compound and * reducing agent.
• redox initiator systems which generally consist of a combination of at least one peroxidic compound and * reducing agent.
• One or all of these components can be initially introduced, the other component and optionally the rest of the partially introduced component or optionally both components are then metered in during the polymerization.
• the oxidation component can be introduced and the polymerization is controlled by metering in the reduction component. This is generally the preferred embodiment.
• the dispersions produced by the process according to the invention are suitable as adhesives, for coating paper, fabrics and nonwovens, from natural or synthetic fibers, glass fibers, wood fibers, etc., as additives or as binders in concrete and mortar mixtures.

Landscapes

• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
• Polymerisation Methods In General (AREA)
• Gasket Seals (AREA)

Priority Applications (1)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6168853

Family Applications (1)

Country Status (5)

Cited By (4)

Families Citing this family (39)

Citations (8)

Family Cites Families (10)

• 1982
  • 1982-07-20 DE DE19823227090 patent/DE3227090A1/de not_active Withdrawn
• 1983
  • 1983-06-09 JP JP58501991A patent/JPS59501363A/ja active Granted
  • 1983-06-09 US US06/518,308 patent/US4528315A/en not_active Expired - Fee Related
  • 1983-06-09 DE DE8383105657T patent/DE3366242D1/de not_active Expired
  • 1983-06-09 EP EP83901919A patent/EP0114834A1/de active Pending
  • 1983-06-09 WO PCT/EP1983/000149 patent/WO1984000369A1/de not_active Ceased
  • 1983-06-09 EP EP83105657A patent/EP0099463B1/de not_active Expired

Patent Citations (8)

Non-Patent Citations (1)

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