Unsaturated acetoacetic acid esters are suitable as comonomers in the polymerization of unsaturated compounds in an aqueous medium. Particularly suitable are acetylacetoxyalkyl-allyl ethers which may be synthesized in an easy manner and correspond to the formulae ##STR1## Said allyl ether derivatives are especially prepared by reacting an allyl alcohol with an epoxide and reacting the resulting hydroxyalkyl-allyl ether with diketene. Both reaction steps are carried out at a temperature of from 0.degree. to 100.degree. C., preferably in the presence of a catalyst. The allyl ether derivatives may be copolymerized especially with vinyl compounds, such as vinyl esters, acrylic acid esters, olefins, vinyl halides and vinyl aromatic hydrocarbons.
MONOMER COMPOSITION, POLYMER OBTAINED THEREFROM, AND OCULAR LENS
申请人:Johnson & Johnson Vision Care, Inc.
公开号:EP1354898A1
公开(公告)日:2003-10-22
This invention has the objective of providing monomer compositions with which polymers of a superior balance of various physical properties such as high oxygen permeability, high water content and a low modulus of elasticity can be obtained. It has the further objective of providing polymers and ophthalmic lenses comprised of said monomers.
It is a monomer composition in which three types of monomers specified by the values of Q = (mass of Si atoms in 1 molecule of monomer) / (molecular weight of the monomer) and of Z = (number of ether oxygens in 1 molecule of monomer) + (number of hydroxyl groups in 1 molecule of monomer) are combined in suitable weight ratios.
本发明的目的是提供一种单体组合物,利用这种单体组合物可以获得各种物理性能 (如高透氧性、高含水量和低弹性模量)平衡极佳的聚合物。其进一步目标是提供由上述单体组成的聚合物和眼科镜片。
它是一种单体组合物,其中三种类型的单体按适当的重量比组合,其值分别为 Q=(1 个单体分子中 Si 原子的质量)/(单体分子量)和 Z=(1 个单体分子中醚氧原子的数量)+(1 个单体分子中羟基的数量)。
MONOMER, POLYMER, AND OCULAR LENS COMPRISING THE SAME
申请人:Johnson & Johnson Vision Care, Inc.
公开号:EP1439181A1
公开(公告)日:2004-07-21
Monomers for polymers having high oxygen permeability, high water content and a low modulus of elasticity are provided, and polymers and ophthalmic lenses comprised of said monomers are provided. They are monomers represented by formula (1) or (2) below:
X-O-(CH2CH2CH2O)m-(CH2)n-A (1)
wherein, X is a polymerizable group having carbon-carbon unsaturated bonds; A is a siloxanyl group; R is H or a methyl group; m is an integer of 1 to 10; m' is an integer of 2 to 10; and n is an integer of 2 to 10.
PHOTOCURABLE ACRYLIC RESIN, ADHESIVE COMPOSITION COMPRISING SAME, AND ADHESIVE FILM FORMED BY USING SAME
申请人:LG CHEM, LTD.
公开号:EP3733721A1
公开(公告)日:2020-11-04
The present invention relates to a photocurable acrylic resin which is a polymer of a monomer mixture including a crosslinkable monomer represented by [Formula 1]; a (meth)acrylic monomer including a photoinitiating functional group; and an alkyl (meth)acrylate-based monomer, and has a weight average molecular weight of 100,000 to 500,000, and a branch-type polymer structure, and an adhesive composition and an adhesive film including the same.
ADHESIVE COMPOSITION AND PROTECTIVE FILM USING SAME
申请人:LG CHEM, LTD.
公开号:EP3733807A1
公开(公告)日:2020-11-04
The present invention relates to an adhesive composition and a protective film including an adhesive layer formed by using the same, wherein the adhesive composition includes an acrylic copolymer formed by polymerizing a monomer mixture, the monomer mixture including a monomer represented by [Formula 1], a (meth)acrylic monomer including a carboxy group, a (meth)acrylic monomer including a cross-linkable functional group, and an alkyl(meth)acrylate-based monomer, wherein the acrylic copolymer has a polymerization conversion rate of 99 wt% or higher.