公开(公告)号：SE7709279L

公开(公告)日：1978-02-19

申请号：SE7709279

申请日：1977-08-17

Applicant: BAYER AG

Inventor： WIEDERMANN R ,  MERTEN R ,  DIETRICH W ,  SCHMITZ W

IPC: C08G18/00 ,  C08G18/02 ,  C08G18/10 ,  C08G18/42 ,  C08G18/79

Abstract: The present invention is directed to a method for the production of plastics, including foams, containing urethane groups and predominantly isocyanurate groups by reacting polyesters having a molecular weight of from 350 to 10,000, and containing at least two hydroxyl groups and containing phthalic acid residues and, optionally, other polyhydroxyl compounds having a molecular weight of from 400 to 10,000 and/or chain extenders having a molecular weight of from 32 to 400 with an excess of polyisocyanates in the presence of isocyanate-trimerization catalysts and optionally blowing agents, foam stabilizers and other additives, the improvement characterized in that polyesters are used whose acid components comprise at least 50%, by weight, phthalic acid residues and wherein 10 to 49%, preferably 20 to 40%, by weight, of the isocyanate groups react to form urethane groups and 51 to 90%, preferably 60 to 80%, by weight, of the isocyanate groups react to form isocyanurate groups.

公开(公告)号：BR7705453A

公开(公告)日：1978-05-02

申请号：BR7705453

申请日：1977-08-17

Applicant: BAYER AG

Inventor： SCHMITZ W ,  MERTEN R ,  DIETRICH W ,  WIEDERMANN R

IPC: C08G18/00 ,  C08G18/02 ,  C08G18/10 ,  C08G18/42 ,  C08G18/79

Abstract: The present invention is directed to a method for the production of plastics, including foams, containing urethane groups and predominantly isocyanurate groups by reacting polyesters having a molecular weight of from 350 to 10,000, and containing at least two hydroxyl groups and containing phthalic acid residues and, optionally, other polyhydroxyl compounds having a molecular weight of from 400 to 10,000 and/or chain extenders having a molecular weight of from 32 to 400 with an excess of polyisocyanates in the presence of isocyanate-trimerization catalysts and optionally blowing agents, foam stabilizers and other additives, the improvement characterized in that polyesters are used whose acid components comprise at least 50%, by weight, phthalic acid residues and wherein 10 to 49%, preferably 20 to 40%, by weight, of the isocyanate groups react to form urethane groups and 51 to 90%, preferably 60 to 80%, by weight, of the isocyanate groups react to form isocyanurate groups.

公开(公告)号：SE7709279A

公开(公告)日：1978-02-19

申请号：SE7709279

申请日：1977-08-17

Applicant: BAYER AG

Inventor： WIEDERMANN R ,  MERTEN R ,  DIETRICH W ,  SCHMITZ W

IPC: C08G18/00 ,  C08G18/02 ,  C08G18/10 ,  C08G18/42 ,  C08G18/79

CPC classification number: C08G18/79 ,  C08G18/10 ,  C08G18/4205 ,  C08G18/4244 ,  C08G18/425 ,  C08G2105/00 ,  C08G2105/02 ,  Y10S521/902 ,  C08G18/09