A process for preparing a polymerizable compound
in which:
R, is a hydrogen atom or a methyl group;
A is a group of the formula:-
[in which X is a C2-C4 alkylene group or a group of the formula:
(in which the groups R4 are the same or are different and each is a C1-C4 alkyl group and Rs is a group
in which R7 is a C2-C4 alkylene group, Rs is a C2-C7 alkylene group and m is 0, 1, 2, 3, or 4);
R2 is a hydrogen atom or a C1-C10 alkyl group; and
R3 is a qroup:
(in which R7, Rs and m have the meanings defined above and R6 is a C1-C4 alkylene group)];
Y is a group of the formula: -CH2-CH2-0-,
(in which Z is a C2-C7 alkylene group);
p is an integer of from 1 to 100; and
q is an integer of from 1 to 5;
which process comprises the steps of ring-opening addition polymerizing 1 to 100 moles of β-methyl-δ-valerolactone with one mole of a compound, having both a polymerizable double bond and a hydroxyl group, of the formula:
(in which R1 and A have the meanings defined above) in the presence of a ring-opening addition polymerization catalyst; and then effecting a ring-opening addition of 1 to 5 moles of alkyleneoxide or a cyclic ester to the thus obtained compound.
The invention also provides a similar process (omitting the second ring opening step) for the preparation of compounds wherein q is 0. In addition the invention provides certain specific classes of compounds of formula (2) and, further, coating composition containing acrylic resins derived from the polymerizable compounds obtained in accordance with the invention.
一种制备可聚合化合物的工艺
其中
R 是氢原子或甲基;
A 是式中的一个基团
[其中 X 是 C2-C4 烯基或式如下的基团:
(其中基团 R4 相同或不同,且各为 C1-C4 烷基,Rs 为基团
其中 R7 为 C2-C4 亚烷基,Rs 为 C2-C7 亚烷基,m 为 0、1、2、3 或 4);
R2 是氢原子或 C1-C10 烷基;以及
R3 是一个 q 基团:
(其中 R7、Rs 和 m 具有上文定义的含义,R6 是 C1-C4 亚烷基)];
Y 是式中的一个基团:-
CH2- -0-、
(其中 Z 为 C2-C7 亚烷基);
p 是 1 至 100 的整数;以及
q 是 1 至 5 的整数;
该工艺包括以下步骤:将 1 至 100 摩尔的 β-甲基-
δ-戊内酯与 1 摩尔具有可聚合双键和羟基的化合物进行开环加成聚合:
(其中 R1 和 A 的含义如上),在开环加成聚合催化剂存在下;然后将 1 至 5 摩尔的亚 烷基氧化物或环酯开环加成到由此得到的化合物中。
本发明还提供了制备 q 为 0 的化合物的类似工艺(省略第二开环步骤)。此外,本发明还提供了某些特定类别的式 (2) 化合物,以及含有根据本发明获得的可聚合化合物衍生的
丙烯酸树脂的涂料组合物。