GB880629A - Polyvinyl chloride with improved mechanical properties - Google Patents

Polyvinyl chloride with improved mechanical properties

Info

Publication number
GB880629A
GB880629A GB22549/59A GB2254959A GB880629A GB 880629 A GB880629 A GB 880629A GB 22549/59 A GB22549/59 A GB 22549/59A GB 2254959 A GB2254959 A GB 2254959A GB 880629 A GB880629 A GB 880629A
Authority
GB
United Kingdom
Prior art keywords
polyvinyl chloride
crystallinity
value
catalyst
minutes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB22549/59A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solvic SA
Original Assignee
Solvic SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Solvic SA filed Critical Solvic SA
Publication of GB880629A publication Critical patent/GB880629A/en
Expired legal-status Critical Current

Links

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
    • C08F114/00—Homopolymers 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
    • C08F114/02—Monomers containing chlorine
    • C08F114/04—Monomers containing two carbon atoms
    • C08F114/06—Vinyl chloride

Abstract

Polyvinyl chloride characterized simultaneously by a crystallinity of 10 to 20% and a K value of 90 to 120 is particularly resistant to thermal deformation and is free from brittleness at room temperature. Such polyvinyl chloride may be prepared by polymerizing polyvinyl chloride in the presence of a boron trialkyl catalyst as described in Specification 864,137, the temperature being chosen so that the desired crystallinity is obtained when the polymer is fully crystallized. The K value may be controlled by variation of catalyst concentration and the addition of chain transfer agents. Alternatively, the polyvinyl chloride may be made more than 20% crystallizable (e.g. by the process of Specification 847,676), but crystallized only to a degree within the specified range using known methods such as heat treatment (annealing) and mechanical deformation (malaxation, compression or tensile stress). In the example, liquid vinyl chloride is polymerized at -40 DEG C. under one atmosphere of nitrogen containing oxygen contributing a partial pressure of 100 mm./Hg using tributyl boron as catalyst. The product is stabilized with dibasic lead stearate, calcium stearate and lead phthalate (1% each) and 1/2 % anthracene and is then first malaxated at 200 DEG C. for 5 minutes and secondly compressed under a pressure of 200 Kg./sq. cm. at 210 DEG C. for 2 minutes to develop a crystallinity of 15 to 20%. The K value is between 100 and 105. Specification 820,675 also is referred to.
GB22549/59A 1958-07-22 1959-07-01 Polyvinyl chloride with improved mechanical properties Expired GB880629A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE880629X 1958-07-22

Publications (1)

Publication Number Publication Date
GB880629A true GB880629A (en) 1961-10-25

Family

ID=3883794

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22549/59A Expired GB880629A (en) 1958-07-22 1959-07-01 Polyvinyl chloride with improved mechanical properties

Country Status (1)

Country Link
GB (1) GB880629A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3542710A (en) * 1965-12-21 1970-11-24 Montedison Spa Colored transparent thermoplastic sheet based on vinyl chloride polymer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3542710A (en) * 1965-12-21 1970-11-24 Montedison Spa Colored transparent thermoplastic sheet based on vinyl chloride polymer

Similar Documents

Publication Publication Date Title
GB919198A (en) Process for polymerising vinyl chloride
GB978612A (en) Process for the manufacture of solid porous articles from polyolefins
GB864774A (en) Process for the chlorination of polyethylene
GB880629A (en) Polyvinyl chloride with improved mechanical properties
ES297820A1 (en) Procedure for the preparation of thermoplastic or fluorite elastomeric copolymers (Machine-translation by Google Translate, not legally binding)
ES361893A1 (en) Process for the production of nylon 6
GB996272A (en) Method of improving the properties of tactic polyvinyl chloride
GB1083915A (en) Process for the polymerisation of lauro lactam
NL171711C (en) PROCESS FOR PREPARING BLOCK HOMOPOLYMERS OF BUTADIENE-1,3 AND FORMED PRODUCT, WHOLE OR PART OF COMPOSITION OF SUCH POLYMER
GB952805A (en) Process for the production of isocyanide dichloride derivatives
ES283542A1 (en) A procedure for preparing copolymers with great fluorine content (Machine-translation by Google Translate, not legally binding)
GB1326965A (en) Method of eliminating effects of impurities in carbon bodies
GB605447A (en) Improvement in polymeric materials
GB1290749A (en)
GB942676A (en) Process for the production of polymerized caprolactam and filaments, threads, fibresand the like shaped structures thereof
GB1018220A (en) Glutaronitrile derivative and process for preparing the same
FR2276324B1 (en)
GB917034A (en) Polyvinyl chloride mixtures resistant to prolonged high pressures
GB867139A (en) Improvements in the production of polyolefins
GB917387A (en) Process for the production of polyethylene
SU125244A1 (en) Method of producing titanium trichloride
FR2291842A1 (en) Treatment of hollow thermoplastic articles - by heating to below devitrification temp and cooling
DK137336B (en) Process for the discontinuous production of vinyl chloride-based polymers and copolymers by bulk polymerization.
GB1066679A (en) Preparation of fluoro compounds
GB718806A (en) Manufacture of cyanuric chloride