Process of polymerization and copolymerization redox of vinyl chloride.
AS AFRICAN AND MALAGASY INDUSTRIAL PROPERTY P. 887 Yaounde (Cameroon) Patent classifying international: c08 no. 01416 o.cm w 31 December 1964 to 18 hr 36 requested Mn to the OA m P. I-. (G.P. no. 51,900) called by the business: The Nobel DynamiiAktiengesellschaft, residing in Germany. Delivered 4 July 1969, published at Process for polymerization or copolymerization redox chloride of vinyl. [Disclosure: Dr. Robert BUENING and Gerhard BIER.) For the polymerization of vinyl chloride at temperatures ranging from - 20 °c - 5 °c and, machines are known ascorbic acid, of heavy metal salts and hydrogen peroxide or methyl hydroperoxide. This type of polyméri - ina is typically carried out in the presence of small amounts of alcohol. Since the speed polymerization exceeds 10% per hour and that performs substantially a bulk polymerization, the removal of the heat of polymerization has difficulties, particularly on an industrial scale. A further disadvantage is that the exemplary methods polymerization rate is not linear primarily the beginning of the polymerization. It is known further polymerize chloride vinyl at low temperatures with acid ascor - nanny-goat, heavy metal salts and peroxides such that dilauroyl peroxide, peroxide - diben zoyle, cumyl hydroperoxide, hydroperoxide in the presence of azo cyclohexanone or light THE UV. The polymerization rate can then be adjusted uV light by the use of UV light - nts initially feel additional technical expenditure and, further, the UV light acts adversely on the resulting polymerizate. The present invention shows that these technical defects does - APs not appear, upon polymerization or copolymerization with the redox systems mentioned, in UIC - by reading from the peroxide cyclohexanyl sulfonyl-acetyl in the absence of UV light. The rate of polymerization is nearly linear at the start of polymerization. The yields per hour lie, according to the tempera - ation, in the range of 5 to 10 mass polymerization. In accordance with the present present invention, the polymerization is carried out to still con - erasures between - 8 and - 20 °c in the presence from about 8 to 20% by weight with respect to chloride vinyl a lower alcohol, such as for example methanol. vinyl to - 16 °c. Adjuvated, stirring, 1.2 grams ascorbic acid in 20 ml of methanol, 2 g of peroxide cyclohexanyl sulfonyl-acetyl in 40 ml of methanol and 2 ml of a solution of iron sulfate to 1 - 16 °c using a cooling bath. In the following table that yields after specific time intervals. Curing time efficiency in minutes grams 15, 5.9 30, 12.0 45, 17.9 60, 24.2 75, 30.4 90, 36.5 The invention concerns: The process for the polymerization and copolymerization redox of vinyl chloride, at low temperatures, with implementation of ascorbic acid, salts of heavy metals and peroxides in the absence of UV radiation, consisting basically use peroxide cyclohexanyl sulfonyl-acetyl and carrying out the polymerization between about - 8 and - 20 °c in the presence of about 8 to 20% by weight (relative to the vinyl chloride) of a lower alcohol. THE NOBEL AKTIENGESELLSCHAFTDYNAMIT Proxy: Dr. Robert Pucheu Vinyl chloride is polymerized or copolymerized at - 5 DEG to - 20 DEG C., preferably - 8 DEG to - 20 DEG C., in an organic liquid medium in the presence of ascorbic acid, a heavy metal reducing salt and cyclohexanyl-sulphonyl acetyl peroxide. Specified comonomers are vinyl acetate and ethyl acrylate. The organic liquid may be an alcohol, e.g. methanol. Specified heavy metal salts are ferrous salts such as ferrous sulphate. Examples describe the polymerization of (1) vinyl chloride together with (2) vinyl acetate and (3) ethyl acrylate in the presence of methanol, ascorbic acid, ferrous sulphate and cyclohexanylsulphonyl acetylperoxide at - 16 DEG C. o.cm w 31 December 1964 to 18 hr 36 requested Mn to the OA m P. I-. (G.P. no. 51,900) by the Company called: the Nobel DynamiiAktiengesellschaft, residing in Germany. Delivered 4 July 1969, published at Priority: Patent application deposited in Germany in the n° d-d/39 1 c the 42,155 VInC august 1963 on behalf of the applicant. Process for polymerization or copolymerization redox vinyl chloride. [Disclosure: Dr. Robert BUENING and Gerhard BIER.) For the polymerization of vinyl chloride at temperatures ranging from - 20 °c - 5 °c and, machines are known ascorbic acid, of heavy metal salts and hydrogen peroxide or methyl hydroperoxide. This type of polyméri - ina is typically carried out in the presence of small amounts of alcohol. Since the speed polymerization exceeds 10% per hour and that performs substantially a bulk polymerization, the removal of the heat of polymerization has difficulties, particularly on an industrial scale. A further disadvantage is that the exemplary methods polymerization rate is not linear primarily the beginning of the polymerization. It is known further polymerize chloride vinyl at low temperatures with acid ascor - nanny-goat, heavy metal salts and peroxides such that dilauroyl peroxide, peroxide - diben zoyle, cumyl hydroperoxide, hydroperoxide in the presence of azo cyclohexanone or light THE UV. The polymerization rate can then be adjusted uV light by the use of UV light - nts initially feel additional technical expenditure and, further, the UV light acts adversely on the resulting polymerizate. The present invention shows that these technical defects does - APs not appear, upon polymerization or copolymerization with the redox systems mentioned, in UIC - by reading from the peroxide cyclohexanyl sulfonyl-acetyl in the absence of UV light. The rate of polymerization is nearly linear at the start of polymerization. The yields per hour lie, according to the tempera - ation, in the range of 5 to 10 mass polymerization. In accordance with the present present invention, the polymerization is carried out to still con - erasures between - 8 and - 20 °c in the presence from about 8 to 20% by weight with respect to chloride vinyl a lower alcohol, such as for example methanol. vinyl to - 16 °c. Adjuvated, stirring, 1.2 grams ascorbic acid in 20 ml of methanol, 2 g of peroxide cyclohexanyl sulfonyl-acetyl in 40 ml of methanol and 2 ml of a solution of iron sulfate to 1 - 16 °c using a cooling bath. In the following table that yields after specific time intervals. Curing time efficiency in minutes grams 15, 5.9 30, 12.0 45, 17.9 60, 24.2 75, 30.4 90, 36.5 ABSTRACT The invention concerns: The process for the polymerization and copolymerization redox of vinyl chloride, at low temperatures, with implementation of ascorbic acid, salts of heavy metals and peroxides in the absence of UV radiation, consisting basically use peroxide cyclohexanyl sulfonyl-acetyl and carrying out the polymerization between about - 8 and - 20 °c in the presence of about 8 to 20% by weight (relative to the vinyl chloride) of a lower alcohol. Company said: THE NOBEL AKTIENGESELLSCHAFTDYNAMIT Proxy: Dr. Robert PucheuABSTRACT
Company said: