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1. 发明授权

US5270391A Composition for thermosetting powder coating 失效
标题翻译：热固性粉末涂料组合物
公开(公告)号：US5270391A
公开(公告)日：1993-12-14
申请号：US976506
申请日：1992-11-13
申请人： Eiichiro Miyazaki , Makoto Nishimori , Taisaku Kano , Takayoshi Sekido , Masashi Seki
发明人： Eiichiro Miyazaki , Makoto Nishimori , Taisaku Kano , Takayoshi Sekido , Masashi Seki
IPC分类号： C08K5/092 , C08L33/06 , C09D5/46 , C09D133/06 , C09D137/00 , C08L37/00
CPC分类号： C09D133/068 , C08K5/092 , C09D137/00 , C08L2205/02 , C08L33/068 , Y10T428/31511
摘要： A composition for thermosetting powder coating, which comprises(a) an acrylic copolymer of high softening point having an epoxy equivalent of 250-1,000 g/eq and a softening point of 90.degree.-160.degree. C.,(b) an acrylic copolymer of low softening point having an epoxy equivalent of 200-600 g/eq and a softening point of 30.degree.-70.degree. C.,(c) a polycarboxylic acid, and(d) optionally, a phosphoric acid ester compound and/or a phosphorous acid ester compound,and wherein the difference in softening point between (a) and (b) is 60.degree.-120.degree. C., the weight ratio of (a)/(b) is 95/5 to 60/40, and the equivalent ratio of [the total epoxy groups of (a) and (b)] : [the acid group of (c)] is 0.5:1 to 1:0.5.Said composition has excellent storage stability and, when used as a coating for automobiles, gives a film superior in appearance, solvent resistance and acid resistance.

2. 发明授权

US5200466A Resin composition for powder coatings 失效
公开(公告)号：US5200466A
公开(公告)日：1993-04-06
申请号：US674467
申请日：1991-03-25
申请人： Taisaku Kano , Takayoshi Sekido , Eiichiro Miyazaki , Makoto Nishimori
发明人： Taisaku Kano , Takayoshi Sekido , Eiichiro Miyazaki , Makoto Nishimori
IPC分类号： C08L33/06 , C08L67/02 , C09D5/03 , C09D5/46 , C09D133/04 , C09D133/14 , C09D163/00 , C09D167/00
CPC分类号： C09D133/14 , C08L33/06 , C08L67/02 , C08L2205/02 , Y10S525/934 , C08L2666/02
摘要： There is disclosed a resin composition for powder coatings, which comprises a blend of two acrylic resins obtained by polymerizing a prescribed amount of monomer component (a-1) represented by formula (I) and a prescribed amount of another monomer component (a-2), respectively, and having different polymerization degrees represented by viscosities at 140.degree. C. and a polybasic acid compound in 1.5 to 0.5 equivalent ratio of the glycidyl groups in said acrylic resins to the acid groups in the polybasic acid compound. ##STR1## wherein R.sub.1 and R.sub.2 each represent a hydrogen atom or a lower alkyl group. The resin composition for powder coatings can form a coating film having a mat smooth appearance and being excellent in flexibility as shown by Du Pont impact resistance and the Ericksen test as well as being excellent in nail scratch resistance.

3. 发明授权

US5407706A Resin composition for powder coatings 失效
标题翻译：粉末涂料用树脂组合物
公开(公告)号：US5407706A
公开(公告)日：1995-04-18
申请号：US999655
申请日：1992-12-29
申请人： Taisaku Kano , Takayoshi Sekido , Eiichiro Miyazaki , Makoto Nishimori
发明人： Taisaku Kano , Takayoshi Sekido , Eiichiro Miyazaki , Makoto Nishimori
IPC分类号： C08L33/06 , C08L67/02 , C09D5/03 , C09D5/46 , C09D133/04 , C09D133/14 , C09D163/00 , C09D167/00 , C08L37/00
CPC分类号： C09D133/14 , C08L2205/02 , C08L33/06 , C08L67/02 , Y10S525/934
摘要： There is disclosed a resin composition for powder coatings, which comprises a blend of two acrylic resins obtained by polymerizing a prescribed amount of monomer component (a-1) represented by formula (I) and a prescribed amount of another monomer component (a-2), respectively, and having different polymerization degrees represented by viscosities at 140.degree. C. and a polybasic acid compound in 1.5 to 0.5 equivalent ratio of the glycidyl groups in said acrylic resins to the acid groups in the polybasic acid compound. ##STR1## wherein R.sub.1 and R.sub.2 each represent a hydrogen atom or a lower alkyl group. The resin composition for powder coatings that can form a coating film having a mat smooth appearance and being excellent in flexibility as shown by Du Pont impact resistance and the Ericksen test as well as being excellent in nail scratch resistance.
摘要翻译：公开了一种用于粉末涂料的树脂组合物，其包含通过将规定量的由式（I）表示的单体组分（a-1）和规定量的另一单体组分（a-2）聚合而获得的两种丙烯酸树脂的共混物），并且具有由140℃下的粘度表示的不同聚合度和多元酸化合物，所述丙烯酸类树脂中的缩水甘油基与多元酸化合物中的酸基的1.5至0.5当量比。式（I）其中R 1和R 2各自表示氢原子或低级烷基。用于粉末涂料的树脂组合物，其可以形成具有平滑外观的柔软性并且具有优异的柔韧性的涂膜，如Du Pont抗冲击性和Ericksen试验所示，并且具有优异的耐指甲耐刮性。

4. 发明授权

US5369178A Resin composition for thermosetting coating 失效
标题翻译：用于热固性涂层的树脂组合物
公开(公告)号：US5369178A
公开(公告)日：1994-11-29
申请号：US907176
申请日：1992-07-01
申请人： Eiichiro Miyazaki , Taisaku Kano
发明人： Eiichiro Miyazaki , Taisaku Kano
IPC分类号： C08L33/06 , C08L61/32 , C09D133/06 , C08L33/02
CPC分类号： C09D133/068 , C08L33/062 , C08L61/32
摘要： A resin composition for thermosetting coating, which comprises(a.sub.1) an acrylic copolymer having a particular acid value and/or (a.sub.2) an acrylic copolymer having a particular acid value and a particular hydroxyl value,(b) an acrylic copolymer having a particular epoxy equivalent,(c) a monobasic acid having a dissociation constant (pKa) of 3 or less, and, as necessary,(d) an amino resin and(e) a quaternary phosphoium salt,and wherein the equivalent ratio of the acid groups of (a.sub.1) and/or (a.sub.2) and the epoxy groups of (b) is 1:0.5 to 0.5:1 and the amounts of (c), (d) and (e) are 0.01-5 parts by weight, 1-25 parts by weight and 0.01-3 parts by weight, respectively, per 100 parts by weight of the total of (a.sub.1) and/or (a.sub.2) and (b).The resin composition, when used as a clear coating for automobiles, is superior in film appearance, acid resistance, solvent resistance water resistance, weatherability, storage stability and low temperature curing.
摘要翻译：一种用于热固性涂层的树脂组合物，其包含（a1）具有特定酸值的丙烯酸共聚物和/或（a2）具有特定酸值和特定羟基值的丙烯酸共聚物，（b）具有特定环氧相当于（c）解离常数（pKa）为3以下的一元酸，根据需要，（d）氨基树脂和（e）季磷酸盐，其中酸基的当量比（a1）和/或（a2），（b）的环氧基为1:0.5〜0.5:1，（c），（d），（e）的量为0.01-5重量份，相对于（a1）和/或（a2）和（b）的总计100重量份，分别为25重量份和0.01-3重量份。当用作汽车的透明涂层时，树脂组合物的膜外观，耐酸性，耐溶剂性耐水性，耐候性，储存稳定性和低温固化性优异。

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