摘要:
이소시아네이트 기의 수에 대한 -CO-NH-CO- 기의 수의 비가 최대 1이도록 하는 양의 -CO-NH-CO- 구조를 갖는 기를 포함하는 화합물을 포함하는 안정한 폴리이소시아네이트 조성물. 이 폴리이소시아네이트 조성물, 할로겐화리튬, 우레아 및 에폭시 수지를 포함하는 경화성 조성물.
摘要:
A coating powder (I) contg.: (A) an OH gp.-contg. binder with an OH number of 25-200 and an average mol. wt. (calculated from the OH content) of 400-10,000, which is solid at below 40 degrees C and liq. at above 130 degrees C; (B) a poly-addn. cpd. contg. uretedione gps. and opt. free NCO gps., based on aliphatic and/or cycloaliphatic di- isocyanates, which is solid at below 40 degrees C and liq. at above 125 degrees C; (C) a component with COOH and/or anhydride gps. which is solid at below 40 degrees C and liq. at above 160 degrees C, comprising: (C1) 4-20C (cyclo)aliphatic dicarboxylic acids; (C2) mono- and/or polymeric opt. modified anhydrides of such acids; and/or (C3) 4-18C hydroxycarboxylic acids; (D) a component with a mol. wt. of 200-5000 contg. gps. which are reactive towards COOH and/or anhydride gps.; and opt. (E) known coating powder additives, etc.. The amts. of components (A-D) are such as to provide 0.6-1.4 NCO gps. from (B) (including those in dimeric form as uretedione) to each OH gp. from (A) and 0.3-1.5 reactive gps. from (D) to each carboxyl equiv. from (C) (with one COOH gp. = 1 equiv. and one anhydride gp. = 2 equivs.), and the amt. of (C) and (D) is 10-40 wt.% of the total amt. of components (A)-(D).
摘要:
PURPOSE: Provided is a powder coating composition for producing a coating layer showing matte appearance with no need of adding polyurea and/or other fillers. CONSTITUTION: The powder coating composition comprises: (A) a crosslinking agent; and (B) a COOH group- and/or OH group-containing polyester component including 10-80 wt% of at least one amorphous polyester (B1) and 20-90 wt% of at least one (semi)crystalline polyester(B2) , obtained by reacting 50-100 mol% of succinic acid and/or adipic acid and/or sebacic acid and/or dodecadionic acid and/or anhydrides and/or esters with 50-100 mol% of monoethylene glycol, butane-1,4-diol and/or hexane-1,6-diol, wherein the polyester has an OH number of 0-200 KOH/g, COOH number of 0-150 mg KOH/g, with the proviso that at least one of OH number and COOH number is greater than 0, and the number of reactive groups applicable per polyester functional group is 0.6-1.2.
摘要:
본 발명은 (a) (i) 하나 이상의 폴리아이소시아네이트 약 1 당량; 및 (ii) 부탄다이올 또는 펜탄다이올 약 0.3 내지 약 0.4 당량을 포함하는 성분들의 반응 생성물을 포함하는 아이소시아네이트 작용성 우레탄 예비중합체; (b) 트라이메틸올프로판 약 0.3 내지 약 0.7 당량; 및 (c) 부탄다이올 또는 펜탄다이올 약 0.4 당량 이하를 포함하는 성분들의 반응 생성물을 포함하며, 이때 상기 반응 생성물 성분들이 본질적으로 폴리에스터 폴리올 및 폴리에터 폴리올을 함유하지 않는, 폴리우레탄; 및 이로부터 제조되는 조성물, 코팅 및 물품, 및 이의 제조 방법에 관한 것이다.