公开(公告)号：US3655542A

公开(公告)日：1972-04-11

申请号：US3655542D

申请日：1969-03-05

Applicant: TORAY INDUSTRIES

Inventor： TAMAI ISAMU ,  OYAMA MINORU ,  OSAKADA ATSUSHI ,  SHINOHARA YASUO

IPC: B29C44/34 ,  C08J9/16 ,  C08J9/228 ,  C08F47/10 ,  C08F29/04

CPC classification number: B29C44/461 ,  C08J9/16 ,  C08J9/228 ,  Y10S264/05 ,  Y10S264/13 ,  Y10S264/18 ,  Y10S521/915 ,  Y10S521/918

Abstract: A modified cellular particle is provided for molding cellular articles and comprises a partially foamed thermoplastic resin containing excess foaming agent which decomposes upon heating to generate a gas. The cellular particle has a mean specific gravity of 95 - 10 percent of the specific gravity of the resin composition, the polymer is cross-linked to a gel content of 20 90 percent and the particle has substantially no surface pores. The particles have a mean volume of 0.01 - 2 cc.

Abstract translation: 提供改进的细胞颗粒用于模制细胞制品，并且包括含有过量发泡剂的部分发泡的热塑性树脂，其在加热时分解以产生气体。 细胞颗粒的平均比重为树脂组合物比重的95-10％，聚合物交联凝胶含量为20-90％，颗粒基本上没有表面孔。 颗粒的平均体积为0.01-2cc。

公开(公告)号：US3542702A

公开(公告)日：1970-11-24

申请号：US3542702D

申请日：1967-12-28

Applicant: TORAY INDUSTRIES

Inventor： OKADA HIROSHI ,  TAMAI ISAMU ,  OSAKADA ATSUSHI ,  OYAMA MINORU ,  YAMADA MASAAKI ,  OHKUBO SHUNJI

IPC: C08J9/00 ,  C08J1/18 ,  C08D13/10 ,  C08F47/10

CPC classification number: C08J9/0014 ,  C08J9/10 ,  C08J2323/12 ,  C08K5/01 ,  C08K5/14 ,  C08K5/23 ,  C08L23/10 ,  C08L57/00 ,  Y10S264/05 ,  Y10S264/16 ,  Y10S264/18 ,  Y10S521/915

公开(公告)号：US3645928A

公开(公告)日：1972-02-29

申请号：US3645928D

申请日：1969-07-16

Applicant: TORAY INDUSTRIES

Inventor： WAKAMURA NOBUO ,  TANAKA TAKASHI ,  OKADA HIROSHI ,  OSAKADA ATSUSHI

IPC: C08G69/20 ,  C08J9/04 ,  C08J1/20 ,  C08J1/26

CPC classification number: C08J9/04 ,  C08G69/20 ,  C08J2377/02

Abstract: AN IMPROVED PROCESS IS PROVIDED FOR THE PREPARATION OF POLYLACTAM FOAMS IN WHICH E-CAPROLACTAM OR A MIXTURE OF LACTAMS CONTAINING MORE THAN 50 MOL PERCENT OF E-CAPROLACTAM IS ANIONICALLY POLYMERIZED IN THE PRESENCE OF AN ALKALI CATALYST, A BLOWING AGEN AND A PROMOTER AT A TEMPERATURE OF ABOUT 100-180*C. THE IMPROVED PROCESS IS PARTICULARLY CHARACTERIZED BY THE USE OF A PROMOTER WHICH WHEN ADDED TO A MIXTURE OF LACTAM AND ALKALI CATALYSTS CAUSES THE MIXTURE TO SOLIDIFY DUE TO CRYSTALLIZATION WITHIN 3 MINUTES AND TO PRODUCE A POLYLACTAM HAVING A RELATIVE VISCOSITY OF AT LEAST 3 WHEN A CONVERSION REACHES EQUILIBRIUM. THE POLYLACTAM FOAMS OF THIS INVENTION EXHIBIT IMPROVED MECHANICAL AND CHEMICAL PROPERTIES IN COMPARISON WITH THE POLYLACTAM FOAMS OF THE PRIOR ART WHICH MAKE THEM ESPECIALLY USEFUL FOR THE MANUFACTURE OF LOW DENSITY ARTICLES REQUIRING RELATIVELY HIGH STRENGTH AND CHEMICAL RESISTANCE.

公开(公告)号：US3600336A

公开(公告)日：1971-08-17

申请号：US3600336D

申请日：1968-02-19

Applicant: TORAY INDUSTRIES

Inventor： OKADA HIROSHI ,  OSAKADA ATSUSHI

IPC: C08F283/04 ,  C08G69/00 ,  C08J9/06 ,  C08G53/10 ,  C08G41/04

CPC classification number: C08G69/00 ,  C08F283/04 ,  C08J9/06 ,  Y10S264/05 ,  Y10S264/18 ,  Y10S521/916

Abstract: A POLYAMIDE RESIN FOAM COMPRISING A POLYAMIDE RESIN BASE CROSS-LINKED WITH AN ORGANIC COMPOUND HAVING IN THE MOLECULE AT LEAST TWO REACTIVE UNSATURATED DOUBLE BONDS. A METHOD OF PREPARING A POLYAMIDE RESIN FOAM WHICH COMPRISES UNIFORMLY MIXING A POLYAMIDE WITH AN ORGANIC COMPOUND HAVING IN THE MOLECULE AT LEAST TWO REACTIVE UNSATURATED DOUBLE BONDS AND A CHEMICAL FOAMING AGENT AT A TEMPERATURE HIGHER THAN THE SOFTENING POINT OF SAID POLYAMIDE, IRRADIATING SAID MIXTURE WITH IONZING RAYS TO EFFECT A CROSS-LINKING OF THE POLYAMIDE, AND HEATING THE MIXTURE TO A TEMPERATURE HIGHER THAN THE DECOMPOSITION TEMPERATURE OF SAID FOAMING AGENT TO CAUSE FOAMING.