公开(公告)号：IT8023490D0

公开(公告)日：1980-07-16

申请号：IT2349080

申请日：1980-07-16

Applicant: SNIA VISCOSA

Inventor： LUCIANO CAGLIOTI ,  VITTORIO CRESCENZI ,  GINO DALL ASTA ,  MARZIO LIGUTTI

IPC: C08L20060101 ,  C08L

公开(公告)号：IT7922579D0

公开(公告)日：1979-05-11

申请号：IT2257979

申请日：1979-05-11

Applicant: SNIA VISCOSA

Inventor： MARZIO LIGUTTI ,  ELVIO BERTOTTI

IPC: C08G63/676 ,  C08F

Abstract: A process for the preparation of an unsaturated polyester from a glycol and tetrahydrophthalic anhydride, maleic anhydride and/or fumaric acid, suitable for the production of an unsaturated polyester resin rapidly loosing its surface tackiness after cross-linking, and furnishing very flexible materials which are resistant to creasing, is described. The glycol employed has at least two ether bridges regularly alternated with -CH2-CH2- groups. The reaction is carried out in such a way as to obtain an alkyd essentially exempt from free tetrahydrophthalic anhydride. The resins thus prepared are adapted to the production of putties free from surface tackiness and having good finishing properties for application by spraying and/or by putty knife.