A polyether diol compound represented by the following formula (3):
where R
5
, R
6
, R
7
and R
8
, which may be the same as or different from each other, each represent a linear or branched alkyl group having 1 to 6 carbon atoms.
The invention relates to amino and hydroxy-functional polyesters, wherein the amine is in the form of aspartic acid esters functionality, and wherein the amino and hydroxy-functional polyester has (a) a molecular weight (Mn) of at least about 500, (b) an acid value of about 5 or less, (c) a hydroxyl value of about 30 or more, and (d) an amine value of about 30 or more, and (e) an amine functionality of less than 1.8. Preferably, the compound includes molecules having on the average: at least 1 secondary amino group as an aspartate, and/or at least 1 hydroxy group, and an average total functionality of about 1.8 or higher. More preferably, the molecular weight of the amino and hydroxy-functional polyesters is between 204 and 10,000 and preferably between 482 and 5000.
A photosensitive lithographic printing plate comprising: a support; and a photosensitive layer, wherein the photosensitive layer comprises: a polyurethane resin binder comprising an aliphatic cyclic structure which has a carboxyl group as a substituent directly or indirectly attached to the structure; or a polyvinyl alcohol resin binder modified with an acetal skeleton comprising an aliphatic cyclic structure.
POLYMERIZABLE COMPOSITION AND LITHOGRAPHIC PRINTING PLATE PRECURSOR
申请人:Sugasaki Atsushi
公开号:US20090053653A1
公开(公告)日:2009-02-26
A polymerizable composition comprising: a polyurethane resin synthesized by using a compound represented by the following formula (I) as one of starting materials; a photopolymerization or thermal polymerization initiator; and an addition-polymerizable compound having an ethylenically unsaturated bond:
wherein X represents a tri- or higher valent atom; R
1
and R
2
each independently represent a single bond or an alkylene group optionally having a substituent, provided that R
1
and R
2
do not represent a single bond at a same time; A represents a straight chain linking group; and n is an integer of from 1 to 5.
AQUEOUS POLYURETHANE RESIN DISPERSION AND PROCESS FOR PREPARING THE SAME
申请人:Nakamura Taku
公开号:US20110136976A1
公开(公告)日:2011-06-09
This is to provide an aqueous polyurethane resin dispersion which can form a tough coating film.
An aqueous polyurethane resin dispersion is obtained by dispersing an aqueous polyurethane resin, which is obtained by reacting (A) a polyurethane prepolymer obtained by reacting (a1) a polycarbonate polyol having no urethane bonding having an average molecular weight of 400 to 5000, and having 2.05 to 5 hydroxyl groups in average in one molecule, (b) a polyol compound having an acidic group and (c) a polyisocyanate, or obtained by reacting (a2) the polycarbonate polyol having no urethane bonding having an average molecular weight of 600 to 5000, and having 2.05 to 5 hydroxyl groups in average in one molecule, and having an acidic group, and (c) a polyisocyanate, and (B) a chain elongating agent having a reactivity with the isocyanate group of (A) the polyurethane prepolymer, being dispersed in an aqueous medium.