초록 ▼

Hydroxylated acrylic copolymers in solid form which are the product of the suspension polymerization containing from 1 to 8 carbon atoms in the alcohol chain, hydroxyalkylacrylates or methacrylates, and acrylic or methacrylic acid and contain from 0.5 to 8% free hydroxyl groups and from 0.1 to 5% fr

Hydroxylated acrylic copolymers in solid form which are the product of the suspension polymerization containing from 1 to 8 carbon atoms in the alcohol chain, hydroxyalkylacrylates or methacrylates, and acrylic or methacrylic acid and contain from 0.5 to 8% free hydroxyl groups and from 0.1 to 5% free carboxyl groups which are capable of reacting with compounds containing reactive groups such as isocyanates or their prepolymers, amines containing－NH－CH2OH－groups or epoxy groups provide improved binders for paints and shellacs used for plastics.

대표청구항 ▼

An improved method of preparing hydroxylated acrylic copolymers especially applicable as a binder for paints and shellacs, and containing free hydroxyl and carboxyl groups capable of reacting with compounds having reactive groups selected from isocyanates or their prepolymers, amine resins containin

An improved method of preparing hydroxylated acrylic copolymers especially applicable as a binder for paints and shellacs, and containing free hydroxyl and carboxyl groups capable of reacting with compounds having reactive groups selected from isocyanates or their prepolymers, amine resins containing －NH-CH2OH－, or with epoxy groups, which comprises polymerizing unsaturated alpha olefin and substituted alpha olefin monomers by suspension polymerization in an aqueous media which includes a water-soluble polyacrylate colloid as a suspension stabilizer during polymerization until a solid copolymer reaction product forms and recovering the copolymer reaction product in solid form, wherein the free hydroxyl groups and free carboxyl groups in said reaction product are contained in respective proportions of 0.5 to 8 percent and 0.1 to 5 percent.