中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

8 records (took 0.021 seconds)

    6.
    发明专利
    未知

    公开(公告)号：SE351226B

    公开(公告)日：1972-11-20

    申请号：SE728169

    申请日：1969-05-22

    Applicant: HOECHST AG

    Inventor： JASTROW H ,  WEBER W

    IPC: C08F283/12 ,  C08J9/20 ,  C08F47/10

    Abstract: 1,241,132. Styrene-vinyl polysiloxane foamable copolymers. FARBWERKE HOECHST A.G. 22 May, 1969 [24 May, 1968], No. 26123/69. Headings C3C and C3G. Thermoplastic copolymer beads containing a blowing agent are made by copolymerizing in aq. suspension and in the presence of 4-12% by wt. of at least one blowing agent, a mixture of 70-99À9% by wt. of styrene, 0-30% of acrylonitrile, an acrylate or methacrylate, and 0À01-0À1% of a vinyl polysiloxane containing units of formula where R 1 and R 2 are C 1-4 alkyl groups, the ratio of units I to II being 1: 4 to 1: 50, the terminal groups of the polysiloxane being hydroxyl groups and the mean mol. wt. being 1000-5000 The polysiloxane may be obtained by the cohydrolysis of Cl 2 Si(CH 3 )CH=CH 2 and Cl 2 Si- (CH 3 ) 2 . The blowing agent may be n-, iso- or cyclo-pentane, methyl or methylene chloride or trichlorofluoromethane.

    7.
    发明专利
    未知

    公开(公告)号：DK122177B

    公开(公告)日：1972-01-31

    申请号：DK277969

    申请日：1969-05-22

    Applicant: HOECHST AG

    Inventor： WEBER W ,  JASTROW H

    IPC: C08F283/12 ,  C08J9/20 ,  C08F19/02

    Abstract: 1,241,132. Styrene-vinyl polysiloxane foamable copolymers. FARBWERKE HOECHST A.G. 22 May, 1969 [24 May, 1968], No. 26123/69. Headings C3C and C3G. Thermoplastic copolymer beads containing a blowing agent are made by copolymerizing in aq. suspension and in the presence of 4-12% by wt. of at least one blowing agent, a mixture of 70-99À9% by wt. of styrene, 0-30% of acrylonitrile, an acrylate or methacrylate, and 0À01-0À1% of a vinyl polysiloxane containing units of formula where R 1 and R 2 are C 1-4 alkyl groups, the ratio of units I to II being 1: 4 to 1: 50, the terminal groups of the polysiloxane being hydroxyl groups and the mean mol. wt. being 1000-5000 The polysiloxane may be obtained by the cohydrolysis of Cl 2 Si(CH 3 )CH=CH 2 and Cl 2 Si- (CH 3 ) 2 . The blowing agent may be n-, iso- or cyclo-pentane, methyl or methylene chloride or trichlorofluoromethane.

Patent Agency Ranking