公开(公告)号：JPH1036798A

公开(公告)日：1998-02-10

申请号：JP18932896

申请日：1996-07-18

Applicant: DAICEL CHEM

Inventor： SHIMIZU KUNIO ,  IWASAKI KINJI ,  YANAGIDA SATOKO ,  OSHIMA HIROYUKI

IPC: C09J101/00 ,  C09J131/04 ,  C09J133/04 ,  C09J133/08 ,  C09J201/00

Abstract: PROBLEM TO BE SOLVED: To obtain a waterborne adhesive, capable of manifesting the adhesive strength in a short period and excellent in initial adhesion. SOLUTION: This waterborne adhesive having high initial adhesion is obtained by combining an aqueous polymeric emulsion such as a vinyl acetate- based polymer emulsion with a hydrophobized water-soluble hydroxyethyl cellulose(HEC) and, as necessary, a surfactant such as a nonionic surfactant or an anionic surfactant. The hydrophobized HEC includes the one containing a 4-22C alkyl group or a 6-10C aryl-1 to 4C alkyl group (especially a 12-22C alkyl group) introduced as a hydrophobic group thereinto. The amounts of the respective components are about 0.1-10 pts.wt. hydrophobized HEC and about 0.01-5 pts.wt. surfactant respectively based on 100 pts.wt. resin component in the aqueous polymeric emulsion.

公开(公告)号：JPH1036801A

公开(公告)日：1998-02-10

申请号：JP18932996

申请日：1996-07-18

Applicant: DAICEL CHEM

Inventor： SHIMIZU KUNIO ,  IWASAKI KINJI ,  YANAGIDA SATOKO ,  OSHIMA HIROYUKI

IPC: C08F2/22 ,  C09J131/04

Abstract: PROBLEM TO BE SOLVED: To obtain a water-based adhesive which develops adhesiveness within a short time and has excellent initial tack. SOLUTION: A water-based adhesive having high initial tack is obtained by using an aqueous emulsion obtained by emulsion-polymerizing vinyl acetate with at least one monomer selected among (meth)acrylic acid, glycidyl (meth) acrylate, (meth)acrylamide, N-methylol(meth)acrylamide, fumaric acid, its ester, maleic acid, its ester and a vinyl ester of a tert. carboxylic acid. The emulsifier used is exemplified by polyvinyl alcohol.

公开(公告)号：JPH1046132A

公开(公告)日：1998-02-17

申请号：JP20393496

申请日：1996-08-01

Applicant: DAICEL CHEM

Inventor： SHIMIZU KUNIO ,  IWASAKI KINJI ,  YANAGIDA SATOKO ,  OSHIMA HIROYUKI

IPC: C08F2/24 ,  C08F2/22 ,  C08F18/08 ,  C09J11/04 ,  C09J131/04 ,  C09J201/08

Abstract: PROBLEM TO BE SOLVED: To obtain a water-based adhesive which develops adhesiveness within a short time and has excellent initial tack. SOLUTION: This adhesive is obtained by adding at least one member selected from among water-soluble polyvalent-metal compounds [e.g. organic acid salts (e.g. calcium acetate), inorganic acid salts (e.g. iron sulfate and potassium aluminum sulfate) and halides (e.g. calcium chloride)] to an aqueous emulsion containing a carboxylic polymer. The carboxylic polymer may be in the form of emulsified polymer particles or a protective colloid or may be a water-soluble polymer added to an emulsion. The amount of the polyvalent-metal compound used is about 0.001-25 pts.wt. per 100 pts.wt. carboxylic polymer.

公开(公告)号：JPH1046130A

公开(公告)日：1998-02-17

申请号：JP20393596

申请日：1996-08-01

Applicant: DAICEL CHEM

Inventor： SHIMIZU KUNIO ,  IWASAKI KINJI ,  YANAGIDA SATOKO ,  OSHIMA HIROYUKI

IPC: C09J5/00 ,  C09J105/00 ,  C09J105/04 ,  C09J129/04 ,  C09J131/04 ,  C09J133/04 ,  C09J133/06 ,  C09J137/00 ,  C09J139/06 ,  C09J157/00 ,  C09J201/00

Abstract: PROBLEM TO BE SOLVED: To obtain a water-based adhesive which develops adhesiveness within a short time and has excellent initial tack. SOLUTION: This adhesive is obtained by combining an aqueous polymer emulsion with a water-soluble polymer. The water-soluble polymer contains at least one polymer selected among modified polyvinyl alcohols having cationic groups, Si-containing organic groups, mercapto groups or acyl groups, mucopolysaccharides and polyvinylpyrrolidone. It may be in the form of emulsified polymer particles or a protective colloid or may be a water-soluble polymer added to an emulsion. Its amount of use is about 1-20 pts.wt. per 100 pts.wt.

公开(公告)号：JP2001163929A

公开(公告)日：2001-06-19

申请号：JP32358899

申请日：1999-11-15

Applicant: DAICEL CHEM

Inventor： ASADA TAKESHI ,  SEKIGUCHI JUNICHI ,  TERANISHI TADASHI ,  UMEMOTO KOICHI ,  YANAGIDA SATOKO

IPC: C08L25/04 ,  C08F279/04

Abstract: PROBLEM TO BE SOLVED: To provide a rubber-containing styrene resin wherein rubber particles dispersed in a styrene resin is controlled with respect to the morphology and particle thereof. SOLUTION: The rubber-containing styrene resin has particles of a rubber component dispersed in a matrix constituted of a styrene resin wherein a graft ratio of a styrene monomer to the rubber component is 1 or over, an average particle size of the dispersed rubber component ranges from 0.1 to 3 μm and a requirement for the following equation (1) is satisfied Mn=aT+b (1) (wherein Mn is a number average molecular weight of the matrix resin, T is a conversion of the styrene monomer, a is a constant larger than 0 and b is a constant not smaller than 0). The rubber component may be made of a butadiene rubber or the like. The particle size distribution of the dispersed rubber component may, for example, be in a two-peak form. Such a styrene resin can be prepared by polymerizing at least a styrene monomer in the presence of the rubber component at a graft ratio of 1 or over under conditions where the relation between the conversion Y of the styerene monomer and the number average molecular weight Mn of the polymer can be approximately expressed by a simple equation.

公开(公告)号：JP2000256430A

公开(公告)日：2000-09-19

申请号：JP5997599

申请日：1999-03-08

Applicant: DAICEL CHEM

Inventor： OKAZAKI AKIRA ,  SUZUKI KANAME ,  ARAI TAKASHI ,  YANAGIDA SATOKO

IPC: C08F2/44 ,  C08F291/02

Abstract: PROBLEM TO BE SOLVED: To prepare a rubber-modified styrenic resin having a high impact resistance. SOLUTION: The preparation process uses a continuous reaction apparatus which is successively equipped with three complete-mixing type reactors and one tower type reactor. The process comprises a step wherein the whole amount of styrenic monomers used for preparing a rubber-modified styrenic monomer is divided into three batches at a desired ratio, and then the first batch of styrene monomers and the whole amount of rubbers, which make 100 wt.% in total, are introduced into a first reactor and subjected to initial polymerization, a step wherein a polymerized liquid obtained in the first reactor and the next batch of styrenic monomers are introduced into a second reactor and polymerized under stirring until a rubber phase inversion occurs to yield a rubbery polymer as dispersed particles, and a step wherein a polymerized liquid obtained in the second reactor and the last batch of styrenic monomers are continuously introduced into a third reactor to increase the polymerization conversion rate.

公开(公告)号：JPH1046123A

公开(公告)日：1998-02-17

申请号：JP20393396

申请日：1996-08-01

Applicant: DAICEL CHEM

Inventor： SHIMIZU KUNIO ,  IWASAKI KINJI ,  YANAGIDA SATOKO ,  OSHIMA HIROYUKI

IPC: C09J131/04 ,  C09J11/04 ,  C09J11/06 ,  C09J201/06

Abstract: PROBLEM TO BE SOLVED: To obtain a water-base adhesive which developes its adhesive strength in a short time and is excellent in initial adhesive properties. SOLUTION: This adhesive is obtd. by adding at least one polyfunctional compd. selected among water-soluble titanium oxo acid salt (titanium sulfate), a water-soluble polyazo compd. (Congo Red), and a water-soluble polyaldehyde compd. (glutaraldehyde) to a water-base polymer emulsion contg. a hydroxylated polymer. The hydroxylated polymer may be polymer particles or a protective colloid of the emulsion or may be a water-soluble polymer added to the emulsion. The amt. of the polyfunctional compd. added is about 0.001-50 wt. % of the hydroxylated polymer.