Method for the production of acryloxy-containing organopolysiloxane and the acryloxy cyclohexyl organopolysiloxanes
First Claim
1. A method for the production of acryloxy-containing organopolysiloxane having in each molecule at least one unit with the general formula
in which R1 is a monovalent organic group lacking aliphatically unsaturated bonds, R2 is a group having the general formula
space="preserve" listing-type="equation">--(CH.sub.2).sub.3 OCH.sub.2 C(R.sup.3)HCH.sub.2 R.sup.3or the general formula ##STR23## in which R3 is a group with the general formula
space="preserve" listing-type="equation">--OC(O)C(R.sup.4)═
CH.sub.2,in which R4 is the hydrogen atom or methyl and a is 1 or 2, which method comprises reacting an epoxy group-containing organopolysiloxane having in each molecule at least one unit of the general formula ##STR24## in which R1 and a are defined above, is reacted with acrylic acid or methacrylic acid, followed by a reaction with acryloyl chloride or methacryloyl chloride in the presence of a hydrogen chloride acceptor.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of producing acryloxy containing organopolysiloxanes by reacting an epoxy containing organopolysiloxane with an acrylic acid or methacrylic acid followed by a reaction with acryloyl chloride or methacryloyl chloride. The novel acryloxy or methacryloxy cyclohexyl containing organopolysiloxanes are useful as compositions which cure by radiation, such as ultraviolet or electron beam. The compositions containing the acryloxy or methacryloxy cyclohexyl containing organopolysiloxanes can also contain other ingredients which are useful in radiation curable compositions, such as photoinitiators in ultraviolet radiation curable compositions.
-
Citations
3 Claims
- 1. A method for the production of acryloxy-containing organopolysiloxane having in each molecule at least one unit with the general formula
- space="preserve" listing-type="equation">R.sup.1.sub.a R.sup.2 SiO.sub.(3-a)/2
in which R1 is a monovalent organic group lacking aliphatically unsaturated bonds, R2 is a group having the general formula
space="preserve" listing-type="equation">--(CH.sub.2).sub.3 OCH.sub.2 C(R.sup.3)HCH.sub.2 R.sup.3or the general formula ##STR23## in which R3 is a group with the general formula
space="preserve" listing-type="equation">--OC(O)C(R.sup.4)═
CH.sub.2,in which R4 is the hydrogen atom or methyl and a is 1 or 2, which method comprises reacting an epoxy group-containing organopolysiloxane having in each molecule at least one unit of the general formula ##STR24## in which R1 and a are defined above, is reacted with acrylic acid or methacrylic acid, followed by a reaction with acryloyl chloride or methacryloyl chloride in the presence of a hydrogen chloride acceptor.
- 2. A acryloxy cyclohexyl containing organopolysiloxane having in each molecule at least one unit of the general formula
- space="preserve" listing-type="equation">R.sup.1.sub.a R.sup.2 SiO.sub.(3-a)/2
in which R1 is a monovalent organic group lacking aliphatically unsaturated bonds, R2 is a group having the general formula ##STR25## in which R3 is a group with the general formula
space="preserve" listing-type="equation">--OC(O)C(R.sup.4)═
CH.sub.2,in which R4 is the hydrogen atom or methyl and a is 1 or 2.
- 3. A radiation curable organopolysiloxane composition comprising an acryloxy cyclohexyl containing organopolysiloxane having in each molecule at least one unit of the general formula
- space="preserve" listing-type="equation">R.sup.1.sub.a R.sup.2 SiO.sub.(3-a)/2
in which R1 is a monovalent organic group lacking aliphatically unsaturated bonds, R2 is a group having the general formula ##STR26## in which R3 is a group with the general formula
space="preserve" listing-type="equation">--OC(O)C(R.sup.4)═
CH.sub.2,in which R4 is the hydrogen atom or methyl and a is 1 or 2.
Specification
-
- Resources
-
Current AssigneeToray Silicone Co Ltd (Toray Industries Incorporated)
-
Original AssigneeToray Silicone Co Ltd (Toray Industries Incorporated)
-
InventorsYoshitake, Makoto, Suzuki, Toshio
-
Primary Examiner(s)Marquis, Melvyn I.
-
Application NumberUS07/125,649Time in Patent Office321 DaysField of Search528/32, 528/26, 528/21, 528/14, 556/437, 556/440, 522/99, 522/148US Class Current528/32CPC Class CodesC08G 77/38 Polysiloxanes modified by c...
