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    • 1. 发明授权
    • Water dispersible acrylic based graft copolymers, a method of
manufacture and aqueous paints
    • 水分散性丙烯酸基接枝共聚物,制造方法和水性涂料
    • US5856408A
    • 1999-01-05
    • US803581
    • 1997-02-20
    • Yoshiaki MatsukuraAtsuhiro SakaiHitoshi TaniguchiYoshiaki Kawamura
    • Yoshiaki MatsukuraAtsuhiro SakaiHitoshi TaniguchiYoshiaki Kawamura
    • C08F290/04C08L55/00C09D155/00C08F285/00
    • C09D155/005C08F290/046C08L55/005
    • Provided are aqueous paints with which paint films which have excellent paint film properties such as water resistance and resistance to chemical attack, and excellent finished appearance are obtained, and which have excellent painting operability and storage stability. The invention further provides water dispersible acrylic based graft copolymers, aqueous paints incorporating same and a method to make such paints, wherein an unsaturated bond-containing acrylic based copolymer (a) obtained by reacting an acrylic based copolymer (a1) of acid value 35-120 mg.KOH/gram, hydroxy group value 50-150 mg.KOH/gram, glass transition temperature -20.degree.-+50.degree. C. and number average molecular weight 4500-9000 and an unsaturated monomer mixture (a2), which has functional groups which can react with hydroxy groups, in a mol ratio of a2/a1=0.4-1.5, and a monomer composition (b) compounded in such a way that the acid value is not more than 15 and the hydroxy group value is 50-150 are reacted in the proportions by weight of a/b=10/90-60/40 to produce the claimed water dispersible acrylic based graft copolymer.
    • 本发明提供了具有耐水性,耐化学腐蚀性等优异的涂膜特性,外观优异的油漆膜的水性涂料,其涂装操作性和贮存稳定性优异。 本发明还提供了水分散性丙烯酸系接枝共聚物,含有它的水性涂料和制造这种涂料的方法,其中通过使酸值为35〜35的丙烯酸系共聚物(a1) 120mgKOH /克,羟基值50-150mg.KOH /克,玻璃化转变温度-20℃〜50℃,数均分子量4500-9000,不饱和单体混合物(a2),其具有 可以以a2 / a1 = 0.4-1.5的摩尔比与羟基反应的官能团和单体组合物(b)以使酸值不超过15并且羟基值为50的方式复合 -150以a / b = 10 / 90-60 / 40的重量比反应,以产生要求保护的水分散性丙烯酸基接枝共聚物。
    • 9. 发明授权
    • Water-dispersible acrylic based graft copolymers, a method for making
them and water-based paints thereof
    • 水分散性丙烯酸系接枝共聚物,其制造方法和水性涂料
    • US6127479A
    • 2000-10-03
    • US803580
    • 1997-02-20
    • Yoshiaki MatsukuraAtsuhiro SakaiHitoshi TaniguchiYoshiaki Kawamura
    • Yoshiaki MatsukuraAtsuhiro SakaiHitoshi TaniguchiYoshiaki Kawamura
    • C08L51/00C08F265/00C08F265/04C08L51/06C09D5/00C09D151/00C08F265/02C08F265/06
    • C09D151/003C08F265/04
    • Provided are paint films with outstanding paint film performance traits such as water resistance and chemical resistance, etc., and outstanding finished appearance. The water-based paints are easy to apply and have outstanding storage stability. The invention further provides an acrylic graft copolymer obtained by reacting a acrylic copolymer (a) of acid number 35 to 120 mg KOH/g, hydroxyl group number 50 to 150 mg KOH/g, glass transition temperature -20 to +50.degree. C. and number average molecular weight 4500 to 9000, and a monomer combination (b) comprising an unsaturated monomer (b1) containing a glycidyl group and an unsaturated monomer (b2) containing a hydroxyl group to give an acid number of .ltoreq.15 mg KOH/g and a hydroxyl group number of 50 to 150 mg KOH/g. Copolymer (a) and monomers (b) are reacted in specified proportions in a single stage to make the claimed water-dispersible acrylic graft copolymer which has an acid number of 10 to 30 mg KOH/g, a hydroxyl group number of 50 to 150 mg KOH/g, a glass transition temperature of -20 to +50.degree. C. and a number-average molecular weight of 10,000-100,000 by grafting side chains formed from the aforementioned (b) to a main chain from the aforementioned (a), and this graft copolymer is dispersed in an aqueous medium to obtain the claimed water-based paint.
    • 提供具有优异的漆膜性能特征如耐水性和耐化学性等的漆膜,并且具有优异的成品外观。 水性涂​​料易于使用,具有出色的储存稳定性。 本发明还提供一种通过酸值35至120mg KOH / g,羟基数为50至150mg KOH / g的丙烯酸共聚物(a),玻璃化转变温度-20至+50℃反应而获得的丙烯酸接枝共聚物。 和数均分子量4500〜9000的单体组合(b),含有含有缩水甘油基的不饱和单体(b1)和含有羟基的不饱和单体(b2)的单体组合(b),得到酸值< g,羟基数为50〜150mgKOH / g。 共聚物(a)和单体(b)在一个阶段中以规定比例反应,以制备所要求的水分散性丙烯酸接枝共聚物,其酸值为10至30mg KOH / g,羟基数为50至150 mg KOH / g,玻璃化转变温度为-20〜+ 50℃,数均分子量为10,000〜10000,通过将上述(b)形成的侧链与上述(a)的主链接枝, ,并将该接枝共聚物分散在水性介质中,得到要求保护的水性涂料。