丁基锡三(异辛酸) 、 、 锡 以
正丁醇 为溶剂,
以DMCD (about 98 mole % trans, 80.1 g, 0.40 mol), TMCD (46.5 g, 0.32 mol), CHDM (17.4 g, 0.12 mol), butyltin tris(2-ethylhexanoate) (enough of an approximately 0.2 M solution in butanol to provide the tin content的产率得到1,4-环己烷二甲醇
参考文献:
名称:
Certain polyester compositions which comprise cyclohexanedimethanol, moderate cyclobutanediol, cyclohexanedimethanol, and high trans cyclohexanedicarboxylic acid
Certain polyester compositions which comprise cyclohexanedimethanol, moderate cyclobutanediol, cyclohexanedimethanol, and high trans cyclohexanedicarboxylic acid
申请人:Moody Leslie Shane
公开号:US20070232779A1
公开(公告)日:2007-10-04
Described as one aspect of the invention are polyester compositions A polyester composition comprising at least one polyester which comprises:
(A) a dicarboxylic acid component comprising:
i) 70 to 100 mole % of cyclohexanedicarboxylic acid residues or an ester thereof comprising:
(a) 80 to 99 mole % trans-cyclohexanedicarboxylic acid residues or an ester thereof; and
(b) 1 to 20 mole % cis-cyclohexanedicarboxylic acid residues or an ester thereof;
ii) 0 to 30 mole % of aliphatic dicarboxylic acid residues, other than cyclohexanedicarboxylic acid residues, having up to 16 carbon atoms or esters thereof, other than cyclohexanedicarboxylic acid residues; and
iii) 0 to 10 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms; and
(B) a glycol component comprising:
i) 5 to 35 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and
ii) 65 to 95 mole % of 1,4-cyclohexanedimethanol residues, 1,3-cyclohexanedimethanol residues, 1,2-cyclohexanedimethanol residues or esters thereof or mixtures thereof,
wherein the total mole % of said dicarboxylic acid component is equal to 100 mole %;
the total mole % of said glycol component is equal to 100 mole %;
wherein the inherent viscosity of said polyester is from 0.35 to 1.2 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C.; and wherein said polyester has a Tg of from 66 to 120° C. The polyesters may be manufactured into articles.
Process for the preparation of substituted hydroxyhydrocinnamate esters
申请人:Ciba Specialty Chemicals Corporation
公开号:US05892097A1
公开(公告)日:1999-04-06
The transesterification of substituted lower alkyl hydroxyhydrocinnamates with a higher alcohol or a polyol is greatly facilitated by the use of a trace amount of a tin catalyst. In many cases, the amount of the catalyst is so small that it is unnecessary to remove it from the final product by distillation of said product.
Described is a process for preparing urethane (meth)acrylates. In a first step, a hydroxyalkyl (meth)acrylate is reacted with a lactone (B) in the presence of at least one zinc compound and/or bismuth compound (C) to produce a bismuth-containing product, and, in a further step, the bismuth-containing product is reacted with at least one cycloaliphatic or asymmetric aliphatic diisocyanate (D).
Certain polyester compositions which comprise cyclobutanediol, cyclohexanedimethanol, and high trans-cyclohexanedicarboxylic acid
申请人:Moody Leslie Shane
公开号:US20070232778A1
公开(公告)日:2007-10-04
Described as one aspect of the invention are polyester compositions comprising at least one polyester which comprises:
(A) a dicarboxylic acid component comprising:
i) 70 to 100 mole % of cyclohexanedicarboxylic acid residues or an ester thereof comprising:
(a) 70 to 98 mole % trans-cyclohexanedicarboxylic acid residues or an ester thereof; and
(b) 2 to 30 mole % cis-cyclohexanedicarboxylic acid residues or an ester thereof;
ii) 0 to 30 mole % of aliphatic dicarboxylic acid residues, other than cyclohexanedicarboxylic acid residues, having up to 16 carbon atoms or esters thereof, other than cyclohexanedicarboxylic acid residues,; and
iii) 0 to 10 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms; and
(B) a glycol component comprising:
i) 1 to 99 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and
ii) 1 to 99 mole % of 1,4-cyclohexanedimethanol residues, 1,3-cyclohexanedimethanol residues, 1,2-cyclohexanedimethanol residues or esters thereof or mixtures thereof,
wherein the total mole % of said dicarboxylic acid component is equal to 100 mole %;
the total mole % of said glycol component is equal to 100 mole %;
wherein the inherent viscosity of said polyester is from 0.35 to 1.2 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C.; and wherein said polyester has a Tg of from 60 to 155° C. The polyesters may be manufactured into articles.