公开(公告)号：JPH11158803A

公开(公告)日：1999-06-15

申请号：JP34069397

申请日：1997-11-26

Applicant: BRIDGESTONE CORP

Inventor： MASUDA KINJI ,  IWASAKI SHINICHI

IPC: E01C5/18

Abstract: PROBLEM TO BE SOLVED: To reduce the working man-hours by mixing the granular or fiber-like rubber chips with the liquid binder, and forming it into a flat plate shape with an extruder. SOLUTION: The granular or fiber-like rubber chips is mixed with the liquid binder, and formed into a flat plate shape by an extruder. As a rubber chips, recycled rubber from tire or the like is used, and desirably, rubber chips of EPDM or the like is used. Except for rubber, olefin group or urethane group thermoplastic elastomer having hardness at 30-90 (JIS.A), desirably at 40-80 can be used. The rubber chips having a mean granular diameter at 0.5-20 mm, desirably at 15 mm or less, is used and the fiber having a mean length at 0.5-20 mm and a mean diameter at 0.1-5 mm is used. As a liquid binder, double-liquid type urethane or moisture hardening type urethane resin, which are conventionally used, is used, but in the case of using the olefin group EPDM or the like as the rubber chips, the olefin group binder desirable.

公开(公告)号：JPH10264622A

公开(公告)日：1998-10-06

申请号：JP9145897

申请日：1997-03-25

Applicant: BRIDGESTONE CORP

Inventor： IZUMIMOTO TAKAHARU ,  IWASAKI SHINICHI

IPC: B60C27/06 ,  B60C27/16

Abstract: PROBLEM TO BE SOLVED: To improve comfortableness, low noise, and abrasion resistance, by setting the hardness of the grounding side material of a tire nonskid tool of which the whole body is formed out of thermoplastic elastomer and mounted on the outer circumference of a tire to be softer than the hardness of the tire side material, and respectively setting the materials to be the specific hardness. SOLUTION: When a resin chain is manufactured, thermoplastic urethane elastomer is used for it, and the resin chain is formed, for example, by a bicolor molding method. The obtained resin chain is formed for example so that thickness of a part 1 of hardness (a) is 5 mm, thickness of a part 2 of hardness (b) is 3 mm, and thickness of a part with a spike pin 3 buried therein is 7 mm. In this case, the hardness (a) of the grounding side material is 50-90 degrees in JIS.A hardness, the hardness (b) of the tire side material is 60-100 degrees in JIS, A hardness, and difference between the hardness (a) and the hardness (b) is set to be 2-20 degrees, favorably 5-10 degrees. If necessary, usually used compounding agent such as deterioration preventing agent or glass fiber is added to the respective materials.

公开(公告)号：JPH10195855A

公开(公告)日：1998-07-28

申请号：JP35916096

申请日：1996-12-29

Applicant: BRIDGESTONE CORP

Inventor： IWASAKI SHINICHI

IPC: E02B11/00 ,  E01C11/24

Abstract: PROBLEM TO BE SOLVED: To easily bend a drain pipe with corrosion resistance and improve the workability by forming end part slits and center part slits at the fixed pitch in the width direction of a sheet made of a thermoplastic resin, and making the sheet round in the lengthwise direction so as to form it into a pipe. SOLUTION: End part slits 2 at the fixed pitch are provided from the right and left end parts 3 to the center, perpendicular to the lengthwise direction of a sheet 1 made of a thermoplastic resin. Center part slits 4 are provided in parallel with the end part slits 2. The sheet 1 is made round so as to form it into a pipe, and the end parts in the width direction of the sheet 1 are overlapped in the circumferential direction of the pipe. Reinforcement such as glass fiber is added to the sheet 1 made of the thermoplastic resin, so as to improve rigidity of the pipe. Formability at forming into a pipe and flexibility against bending in addition to draining property are given to the end part slits 2. By setting the numerical aperture of the slits 2, 4 to be 4-80% of the full surface of the pipe, sufficient rigidity and draining effect are provided.

公开(公告)号：JPH10195301A

公开(公告)日：1998-07-28

申请号：JP35916396

申请日：1996-12-29

Applicant: BRIDGESTONE CORP

Inventor： OUCHI TAKAO ,  OSHIMA NOBUMITSU ,  IWASAKI SHINICHI

IPC: E01C7/26 ,  C08K3/04 ,  C08L53/02 ,  C08L95/00

Abstract: PROBLEM TO BE SOLVED: To obtain a binder which undergoes less separation of a constituent thermoplastic elastomer and can be kept in an uniform state for a long time even when stored at high temperatures by uniformly mixing the thermoplastic elastomer with carbon black to form a composite before mixing it with asphalt. SOLUTION: 100 pts.wt. thermoplastic elastomer, desirably a styrene/butadiene/styrene block copolymer is uniformly mixed with 10-100 pts.wt., desirably 30-80 pts.wt. carbon black to form a complex. The carbon black used should have a particle diameter of 5-100μm, desirably 15-40μm and an N2 adsorption specific surface area of 30-200m /g, desirably 80-180m /g. It is desirable that the obtained binder comprises 96.5-70 pts.wt. asphalt, 3-15 pts.wt. thermoplastic elastomer and 0.5-15 pts.wt. carbon black.

公开(公告)号：JPH09315115A

公开(公告)日：1997-12-09

申请号：JP15601396

申请日：1996-05-27

Applicant: BRIDGESTONE CORP

Inventor： IZUMIMOTO TAKAHARU ,  IWASAKI SHINICHI

IPC: B60C1/00 ,  B60C27/16 ,  C08G18/73 ,  C08G18/79 ,  C08L75/00 ,  C08L75/04

Abstract: PROBLEM TO BE SOLVED: To provide a resinous chain made of urethane resin having a three- dimensional structure. SOLUTION: This antiskid device wound around the outer circumferential part of a tire is thermoplastic upon fusion formation and made of urethane resin which has the JISA hardness of 50-90 and a molecular structure where a three-dimensional cross-linking structure with its base being hexamethylene diisocianate is introduced into a matrix after the heat formation. The urethane resin is hot formed by mixing 0.05-30 parts by weight of polyisocianate compound whose isocianate component is hexamethylene diisocianate and which contains urethodion group and isocianurate group and a modifier compound in which the mol ratio of hydroxyl compound is in the range of NCO/OH =0.90-1.10, with respect to 100 parts by weight of thermoplastic polyurethane resin.

公开(公告)号：JPH09124851A

公开(公告)日：1997-05-13

申请号：JP28716395

申请日：1995-11-06

Applicant: BRIDGESTONE CORP

Inventor： IZUMIMOTO TAKAHARU ,  MIURA AKIO ,  MOJI KOUSHIROU ,  IWASAKI SHINICHI ,  FUJINO KENTARO

IPC: B60C1/00 ,  B29D30/52 ,  C08J5/04 ,  C08K7/00 ,  C08K7/02 ,  C08L21/00

Abstract: PROBLEM TO BE SOLVED: To obtain the subject material produced by adding a fiber having a specific thermal shrinkage to a matrix, having high fiber orientation and excellent friction property to ice and, accordingly, giving a pneumatic tire exhibiting improved performance on ice by using the material as the tread of the tire. SOLUTION: (A) A matrix (e.g. crosslinked rubber) is incorporated with (B) preferably 1-10 vol.% (based on the component A) of a fiber having a thermal shrinkage of

公开(公告)号：JPS63230311A

公开(公告)日：1988-09-26

申请号：JP6534087

申请日：1987-03-19

Applicant: BRIDGESTONE CORP

Inventor： MOROOKA TAKUYA ,  SHINOGAYA TOSHIKAZU ,  SAKAYORI KIYOSHI ,  IWASAKI SHINICHI ,  ISHIDA YOZO ,  ISHIZUKA YUZO

IPC: F16B37/14 ,  B29C39/10 ,  B29C39/26 ,  B29K105/20 ,  B29L1/00

Abstract: PURPOSE:To improve working efficiency by arranging correctly a base body of a nut at a predetermined position on the inside of a cavity of a mold, by a method wherein the base body of the nut is supported with a pin by providing the pin in a standing state by a predetermined height from the surface of the mold, and synthetic resin is cast under that state. CONSTITUTION:A cavity (c) demarcating the whole surface of a nut is formed with molds (a), (b). Then a hole (f) in which a core (e) where a male screw (d) is formed is fitted is bored into the surface of the mold (a), and the core (e) is buried into the hole (f). A stopper pin (g) is provided on the surface of the mold (a) in a standing state, and a projecting length of the pin (g) is decided to be a length of a base body (k) of the nut which is to be stayed within a predetermined position of a space of the cavity (c). The mold (b) is constituted so as to be combined with the mold (a). Then the circumference of the base body (k) of the nut is covered with synthetic resin (h) by casting the synthetic resin within the cavity (c). Then the mold (b) is removed, a molded nut N is pulled out of the mold (a) while the core (e) is kept screwed on, and at a point of time when the pin (g) has gotten out of the inside of the synthetic resin (h) completely, the nut N is screwed off from the male screw (d) of the core (e).

公开(公告)号：JPS61152759A

公开(公告)日：1986-07-11

申请号：JP27389384

申请日：1984-12-27

Applicant: BRIDGESTONE CORP

Inventor： SHINOGAYA TOSHIKAZU ,  IWASAKI SHINICHI ,  YAMADA SHIGERU

IPC: C08L53/00 ,  B65D90/04 ,  C08L7/00 ,  C08L21/00 ,  C08L23/00 ,  C08L51/00 ,  C08L51/02 ,  C08L77/00 ,  C08L101/00

Abstract: PURPOSE:A composition that is composed of a styrene block copolymer, a low-molecular-weight olefin, an olefinic processing aid and a plasticizer oil, thus being suitable for use as water tanks and their peripheral equipment, because it resists deterioration caused by chlorine in drinking water, causes no migration of the plasticizer into water and has reduced permanent compression set. CONSTITUTION:The objective composition is obtained by using (A) 30-60wt% of a styrene block copolymer (SEBS), (B) 15-30wt% of a low molecular weight olefinic softenic agent (PIB) (C) 5-30wt% of a plasticizer oil and (D) 5-30wt% of an olefinic processing aid. Component A is preferably a styrene-ethylene- butylene-styrene block copolymer of 10-50wt% of styrene and 10,000-300,000 mol.wt. component B has preferably molecular weight of 30,000-50,000. Component D is preferably polypropylene or an ethylene-propylene block copolymer.

公开(公告)号：JPS59187053A

公开(公告)日：1984-10-24

申请号：JP5241983

申请日：1983-03-30

Applicant: Bridgestone Corp

Inventor： IWASAKI SHINICHI ,  KITAYAMA MOTOZUMI ,  KAWAGOE TAKAHIRO

IPC: C08L7/00 ,  C08L9/06 ,  C08L21/00 ,  C08L77/00

Abstract: PURPOSE: A polymer composition that contains a polyamide resin and a specific styrene-butadiene copolymer, thus showing very high failure characteristics.
CONSTITUTION: The objective composition contains (A) a polyamide resin and (B) a styrene-butadiene copolymer containing 45W80wt% of styrene. As the component B, styrene may be displaced with an unsaturated carboxylic acid, preferably acrylic acid up to 30wt%. Components A and B are added at an A/B ratio of (99W30)/(1W70), preferably (99W40)/(1W60), per 100pts.wt. of A+B. The additional use of a sulfur vulcanizer is more preferred, because component B is crosslinked.
COPYRIGHT: (C)1984,JPO&Japio

Abstract translation: 目的：含有聚酰胺树脂和特定苯乙烯 - 丁二烯共聚物的聚合物组合物，因此具有非常高的失效特性。 构成：目标组合物含有（A）聚酰胺树脂和（B）含有45-80重量％苯乙烯的苯乙烯 - 丁二烯共聚物。 作为组分B，苯乙烯可以用不饱和羧酸，优选高达30重量％的丙烯酸取代。 组分A和B以（99-30）/（1-70），优选（99-40）/（1-60）/ 100pts.wt。的A / B比加入。 的A + B。 另外使用硫硫化剂是更优选的，因为组分B是交联的。

公开(公告)号：JPS5968360A

公开(公告)日：1984-04-18

申请号：JP17756182

申请日：1982-10-12

Applicant: Bridgestone Corp

Inventor： KAWAGOE TAKAHIRO ,  IWASAKI SHINICHI ,  KITAYAMA MOTOZUMI ,  IRAKO KOUICHI

IPC: C08L27/00 ,  C08K3/22 ,  C08L1/00 ,  C08L7/00 ,  C08L21/00 ,  C08L23/00 ,  C08L27/06 ,  C08L33/00 ,  C08L33/02 ,  C08L33/18 ,  C08L51/00 ,  C08L51/02 ,  C08L101/00

Abstract: PURPOSE: To provide a polymer alloy having high breaking strengths, well suited for hoses or belts, by reacting carboxylated polyvinyl chloride, carboxylated nitrile rubber, and (hydro)oxides of Group II or III metals.
CONSTITUTION: Carboxylated polyvinyl chloride (A) such as vinyl chloride/α,β- unsatd. carboxylic acid copolymers, carboxylated nitrile rubber (B) such as conjugated diene/acrylonitrile/α,β-unsatd. carboxylic acid copolymer, and about 0.5W30pts.wt. based on 100pts.wt. total amt. of components A and B, oxide of Group II or III metal (e.g., magnesium or zinc oxide) or hydroxide thereof are mixed and reacted at a temp. above the softening point of the vinyl chloride polymer and about 180°C or under, and, if necessary, reinforcing agents, fillers, plasticizers, etc. are incorporated with the reaction product to yield the intended polymer alloy.
COPYRIGHT: (C)1984,JPO&Japio

Abstract translation: 目的：通过羧基化聚氯乙烯，羧化丁腈橡胶和II或III族金属的（氢氧化物）氧化物，提供具有高断裂强度的聚合物合金，非常适合软管或带。 构成：羧基化聚氯乙烯（A）如氯乙烯/α，β-不饱和。 羧酸共聚物，羧化丁腈橡胶（B），例如共轭二烯/丙烯腈/α，β-不饱和的。 羧酸共聚物，和约0.5-30pts.wt。 基于100pts.wt 总计 的组分A和B，将II族或III族金属的氧化物（例如镁或氧化锌）或其氢氧化物混合并在温度下反应。 高于氯乙烯聚合物的软化点和约180℃或以下，如果需要，将增强剂，填料，增塑剂等与反应产物混合以产生预期的聚合物合金。