公开(公告)号：JPH0539319A

公开(公告)日：1993-02-19

申请号：JP21781691

申请日：1991-08-03

Applicant: SONY CORP

Inventor： KOBAYASHI RIKIO ,  HIDA MASANOBU

IPC: B41M5/382 ,  B41M5/50 ,  B41M5/52 ,  C08F18/02 ,  C08F18/04 ,  C09D131/02 ,  C09J131/00 ,  C09J131/02

Abstract: PURPOSE:To obtain a vinyl aromatic carboxylate polymer which has good adhesiveness and excellent film-forming properties and can be used in many fields. CONSTITUTION:The process for producing the objective vinyl aromatic carboxylate homopolymer of an average degree of 400 or above, wherein 1,1'- azobis(cyclohexane-1-carbonitrile) or 4,4'-azobis(4-cyanovaleric acid) is used as the catalyst.

公开(公告)号：JPH0538882A

公开(公告)日：1993-02-19

申请号：JP21781491

申请日：1991-08-03

Applicant: SONY CORP

Inventor： KOBAYASHI RIKIO ,  HIDA MASANOBU

IPC: B41M5/382 ,  B41M5/50 ,  B41M5/52

Abstract: PURPOSE:To provide a video printing paper excellent in the light resistance of the image formed by the migration of a dye into its receiving layer. CONSTITUTION:In a video printing paper on which images are formed through dye migration into its receiving layer 3 consisting mainly of resin by heating the dye supported on a base body or dye-containing ink to fuse or sublime the same, the resin in the receiving layer consists mainly of polyvinyl aryl- or alkylurethane.

公开(公告)号：JPH0699671A

公开(公告)日：1994-04-12

申请号：JP27790592

申请日：1992-09-22

Applicant: SONY CORP

Inventor： KOBAYASHI RIKIO ,  MIZUMACHI MOTOHIRO

IPC: B41M5/382 ,  B41M5/40 ,  B41M5/42 ,  B41M5/44

Abstract: PURPOSE:To prevent the fusion boding between heat-sensitive transfer recording material and a thermal head from occurring in sublimation type heat-sensitive transfer recording and the sticking, development of abnormal noise and twisting of the heat-sensitive transfer recording material from occurring by a method wherein heat-resistant lubricant layer excellent in heat resistance and lubricity is formed without adding phosphate esters, which are easily separable from resin, in the heat-resistant lubricant layer of the heat-sensitive transfer recording material. CONSTITUTION:In the heat-sensitive transfer recording material concerned having base sheet, ink layer and heat-resistant lubricant layer, the heat-resistant lubricant layer is made of polymer compound, which is obtained by reacting hydrocarbon compound having two or more hydroxyl group in one molecule and/or silicone compound having hydroxyl group with isocyanate compound having two or more isocyanate group in one molecule. Or the heat-resistant lubricant layer is made of polymer compound, which is obtained by reacting silicone compound having amino group with isocyanate compound having two or more isocyanate group in one molecule.

公开(公告)号：JPH05238140A

公开(公告)日：1993-09-17

申请号：JP7924792

申请日：1992-02-28

Applicant: SONY CORP

Inventor： KOBAYASHI RIKIO ,  ITO KENGO ,  MIZUMACHI MOTOHIRO ,  FUKUMA TOSHIAKI ,  BUNBAYASHI TAKAHITO ,  YUKITA YASUO

IPC: B41M5/337 ,  B41M5/26

Abstract: PURPOSE:To provide a thermosensitive recording material which is capable of preventing sticking phenomenon during printing and realizing high recording density and excellent gradation as well as preserving an image outstandingly. CONSTITUTION:A thermosensitive recording material consists of a support, a thermosensitive recording layer containing a coloring agent and a developer, and an overcoat layer laminated sequentially on a support. The overcoat layer is formed using a polymer which contains segmented silicone compound, preferably polyurethane. Further preferably, the overcoat layer contains segmented hydrocarbon, polyester or polyether as the polymer.

公开(公告)号：JPH0543649A

公开(公告)日：1993-02-23

申请号：JP20203091

申请日：1991-08-12

Applicant: SONY CORP

Inventor： KOBAYASHI RIKIO ,  HIDA MASANOBU

IPC: C08G18/64

Abstract: PURPOSE:To produce a urethane-modified polysaccharide which has new properties, functions, and applications. CONSTITUTION:A urethane-modified polysaccharide is produced by reacting a polysaccharide or its deriv. with an isocyanate compd. in a polar aprotic solvent in the presence of a catalyst at 50-200 deg.C, pref. 60-150 deg.C, for 1-30hr, pref. 2-20hr, to thereby react at least part of the hydroxyl groups of the polysaccharide or its deriv. with the isocyanate compd. The solvent must carefully be selected, and dimethylformamide, hexamethylphosphoric triamide, and N- methylpyrrolidone are usable. Pref. catalysts are dibytyltin dilaurate and a mixture thereof with triethylenediamine. The reaction temp. and time are determined by the types of solvent and catalyst.