SU138619A1 - The method of producing organosilicon esters of polyvinyl alcohol - Google Patents

The method of producing organosilicon esters of polyvinyl alcohol

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Publication number
SU138619A1
SU138619A1 SU686523A SU686523A SU138619A1 SU 138619 A1 SU138619 A1 SU 138619A1 SU 686523 A SU686523 A SU 686523A SU 686523 A SU686523 A SU 686523A SU 138619 A1 SU138619 A1 SU 138619A1
Authority
SU
USSR - Soviet Union
Prior art keywords
polyvinyl alcohol
esters
producing organosilicon
organosilicon esters
ether
Prior art date
Application number
SU686523A
Other languages
Russian (ru)
Inventor
К.В. Белогородская
К.В. Белогородска
С.Н. Ушаков
Original Assignee
К.В. Белогородска
С.Н. Ушаков
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 К.В. Белогородска, С.Н. Ушаков filed Critical К.В. Белогородска
Priority to SU686523A priority Critical patent/SU138619A1/en
Application granted granted Critical
Publication of SU138619A1 publication Critical patent/SU138619A1/en

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Description

Предлагаемый способ получени  кремнийорганических эфиров поливинилового спирта основан на реакции взаимодействи  поливинилового спирта с первичными аминосиланами типа H2NSiR3, где R -алкил , арил или аралкил.The proposed method for producing organosilicon esters of polyvinyl alcohol is based on the reaction of reacting polyvinyl alcohol with primary aminosilanes such as H2NSiR3, where R is alkyl, aryl or aralkyl.

Реакцию ведут в среде сухого пиридина (в котором поливиниловый спирт набухает, а аминосиланы раствор ютс ) при нагревании и интенсивном перемешивании реакционной смеси. Дл  выделени  коемнийорганических эфиров поливинилового спирта из реакционной смеси примен ют осаждение различными органическими соединени ми, смешивающимис  с пиридином и не раствор ющими кремнийорганический эфир. Выделенный продукт реакции очищают повторным переосаждением из соответствующего растворител , промывают и сушат.The reaction is carried out in a dry pyridine environment (in which polyvinyl alcohol swells and aminosilanes dissolve) while heating and vigorously stirring the reaction mixture. In order to isolate the co-organic esters of polyvinyl alcohol from the reaction mixture, precipitation with various organic compounds which are miscible with pyridine and do not dissolve the silicone ether is used. The isolated reaction product is purified by re-precipitating from the appropriate solvent, washed and dried.

Измен   количество вводимого в реакцию аминосилана, получают кремнийорганические эфиры поливинилового спирта различной степени з-амещени . При этом в зависимости от структуры аминосилана и степени замещени  спирта растворимость и прочие свойства кремнийорганического эфира измен ютс  в широких пределах. Так, например , триэтилсилиловый эфир поливинилового спирта, содержащий 13% (мол.) триэтилсилиловых групп, нерастворим в воде и растворим в диоксане, тот же эфир, содержащий 31,6% (мол.) триэтилсилиловых групП, полностью растворим в бензоле и при содержании 61,6% (мол.) триэтилсилиловых групп растворим в петролейном эфире. По мере увеличени  углеводородного радикала, св занного с кремнием, при равной степени замещени  соответствующий эфир поливинилового спирта приобретает большую растворимость и способность раст гиватьс . Так например, диметилбутилсилиловый эфир поливинилового спирта растворим в петролейном эфире уже при степени замещени  23% (мол). Введение ароматических радикалов, св занных с кремнием , повышает твердость и сопротивление разрыву и снижает относительное удлинение таких эфиров по сравнению с эфирами, содержащими алифатические радикалы.By varying the amount of aminosilane introduced into the reaction, polyvinyl alcohol organosilicon esters of varying degrees of z-ameshne are obtained. However, depending on the structure of the aminosilane and the degree of alcohol substitution, the solubility and other properties of the organosilicon ether vary over a wide range. For example, polyvinyl alcohol triethylsilyl ether containing 13% (mol.) Triethylsilyl groups is insoluble in water and soluble in dioxane, the same ether containing 31.6% (mol.) Triethylsilyl groups is completely soluble in benzene and with 61.6% (mol.) Of triethylsilyl groups are soluble in petroleum ether. As the hydrocarbon radical bound to silicon increases, with an equal degree of substitution, the corresponding ester of polyvinyl alcohol becomes more soluble and expandable. For example, polyvinyl alcohol dimethylbutylsilyl ether is soluble in petroleum ether at a degree of substitution of 23% (mol). The introduction of aromatic radicals bonded to silicon increases hardness and tear resistance and reduces the relative elongation of such esters compared to esters containing aliphatic radicals.

SU686523A 1960-11-24 1960-11-24 The method of producing organosilicon esters of polyvinyl alcohol SU138619A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU686523A SU138619A1 (en) 1960-11-24 1960-11-24 The method of producing organosilicon esters of polyvinyl alcohol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU686523A SU138619A1 (en) 1960-11-24 1960-11-24 The method of producing organosilicon esters of polyvinyl alcohol

Publications (1)

Publication Number Publication Date
SU138619A1 true SU138619A1 (en) 1960-11-30

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SU686523A SU138619A1 (en) 1960-11-24 1960-11-24 The method of producing organosilicon esters of polyvinyl alcohol

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SU (1) SU138619A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418293A (en) * 1964-10-13 1968-12-24 Rhone Poulenc Sa Process for the preparation of polyvinyl alcohol by polymerising a vinyloxysilane and alcoholysing the polymer obtained

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418293A (en) * 1964-10-13 1968-12-24 Rhone Poulenc Sa Process for the preparation of polyvinyl alcohol by polymerising a vinyloxysilane and alcoholysing the polymer obtained

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